TDX-85

DUAL CASSETTE DECK

OWNERS MANUAL

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
IMPORTANT SATETY INSTRUCTIONS
CAUTION: Read all of these instructions. Save these instructions for later use. Follow all warnings and instructions marked on the audio
equipment. 1) Read instructions - All the safety and operating instructions should be read before the product is operated. 2) Retain instructions - The safety and operating instructions should be retained for future reference. 3) Heed Warnings - All warnings on the product and in the operating instructions should be adhered to. 4) Follow Instructions - All operating and use instructions should be followed. 5) Cleaning - Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. 6) Attachments - Do not use attachments not recommended by the product manufacturer as they may cause hazards. 7) Water and Moisture - Do not use this product near water-for example, near a bath tub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool; and the like. 8) Accessories - Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturers instructions, and should use a mounting accessory recommended by the manufacturer. 9) A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to overturn. Note to CATV system installer: This reminder is provided to call the CATV system installers attention to Section 820-40 of the NEC which provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of them building, as close to the point of cable entry as practical.
Example of Antenna Grounding as per National Electrical Code, ANSI/NFPA 70

ANTENNA LEAD IN WIRE

GROUND CLAMP ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)
ELECTRIC SERVICE EQUIPMENT
GROUNDING CONDUCTORS (NEC SECTION 810-21) GROUND CLAMPS POWER SERVICE GROUNDING ELECTRODE SYSTEM (NEC ART 250,PART H)
NEC-NATIONAL ELECTRICAL CODE
10) Ventilation - Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating, and these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturers instructions have been adhered to. 11) Power Sources - This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions. 12) Grounding or Polarization - This product may be equipped with a polarized alternating-current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. 13) Power-Cord Protection - Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product. 14) Outdoor Antenna Grounding - If an outside antenna or cable system is connected to the product, be sure the antenna or calbe system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the leadin wire to an antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.

15) Lightning -For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning and power-line surges. 16) Power Lines -An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal. 17) Overloading - Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock. 18) Object and Liquid Entry - Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product. 19) Servicing - Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel. 20) Damage Requiring Service - Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions: a) When the power-supply cord or plug is damaged. b) If liquid has been spilled, or objects have fallen into the product. c) If the product has been exposed to rain or water. d) If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation. e) If the product has been dropped or damaged in any way. f) when the product exhibits a distinct change in performance-this indicates a need for service. 21) Replacement Parts - When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards. 22) Safety Check - Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition. 23) Wall or Ceiling Mounting - The product should be mounted to a wall or ceiling only as recommended by the manufacturer. 24) Heat -The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products (including amplifiers) that produce heat.

CONTENTS

IMPORTANT SAFETY INSTRUCTIONS....2 CONTENTS......3 PRECAUTIONS.....4 Read This Before Operating.....4 Handling the Cassette tape.....4 CONNECTIONS.....5 CONTROLS AND INDICATORS....6 Front Panel.....6 OPERATIONS.....7 Basic Operations.....7 Continuous play of cassette tape....7 Playing by use of SKIP button....8 Recording of a cassette tape....8 Dubbing of a cassette tape....9 OPERATION ACCORDING TO SELECTED MODE....10 TROUBLESHOOTING.....11 SPECIFICATIONS.....11

PRECAUTIONS

Read This Before Operating
Choose the installation location of your unit carefully. Avoid placing it in direct sunlight or close to a source of heat. Also avoid locations subject to vibrations and excessive dust, heat, cold or moisture. Do not open the cabinet as this might result in damage to the circuitry or electrical shock. If a foreign object should get into the set, contact your dealer. When removing the power plug from the wall outlet, always pull directly on the plug, never yank the cord. Do not attempt to clean the unit with chemical solvents as this might damage the finish. Use a clean, dry cloth. Keep this manual in a safe place for future refernce.

Head demagnetization

The head assembly should be demagnetized after about each 50 hours of use in order to maintain good sound quality. The head assembly becomes magnetized, causing noise in recordings and unwanted erasure of valuable recordings, if a magnetized screwdriver or other metal tools come near the head assembly, and when the heads have been used for a long period of time. If the heads become magnetized, use a head demagnetizer (option). When demagnetizing the head assembly, be sure to first push the power switch to the off position.
Maintenance of external surfaces
Handling the cassette tape
Cassette Tape Tape Selection :
For the automatic tape select function to work properly, metal and chrome (cobalt) tapes must have identification holes.
To clean, use a soft dry cloth. If the surfaces are extremely dirty, use a soft cloth, dipped into a soap and water solution or a weak detergent solution. Wring cloth well before wiping the unit. Wipe once again with a soft dry cloth. Never use alcohol, paint thinner, benzene, or a chemically treated cloth to clean this unit. Such chemicals may damage the finish of your unit.

Normal Tapes Chrome (Cobalt) Tapes Metal Tapes
Tape position indentification holes.
Maintenance of the cassette tape
Observe the following to prevent the tape from being twisted. Dont pull the tape out of the upper opening of the cassette tape. If the tape is wound loosely inside the cassette, use the tape deck on fast forward or reverse to tighten. If a small portion of tape is unwound from the cassette, make the tape tight as shown in the figure below.

IMPORTANT :

Do not use C-120 tape. Cleaning with a Head Cleaning Tape Insert a Head Cleaning Tape into the cassette deck. Turn the power on, press PLAY button and the surface of the head will be cleaned in a short time.
Use a pencil to take up the slack and rotate it in the arrow direction.

Maintenance

Maintenance of the head section
The head assembly, capstans and pinch rollers should be cleaned after about each 10 hours of use in order to maintain good sound quality.

Environment

Avoid using the deck in the following conditions: At high temperatures (near a heater, exposed to direct sunlight, etc.) At extremely low temperatures. Where there is excessive humidity. In a dusty atmosphere. Where power line voltage fluctuations are severe (in which case the use of a voltage regulator may be advisable).
Cleaning with a cotton swab
(If the parts are very dirty, use a small amount of alcohol on the cotton swab.)

CONNECTIONS

1. LINE OUT jacks
Connect these jacks to the TAPE PLAY jacks on the amplifier: White pin-plug White jack (L-Ch) Red pin-plug Red jack (R-Ch)

4. AC power cord

Plug this AC power cord into a 120 Volt, 60 cycle grounded AC wall socket or the AC OUTLETS on the rear of the STR-84 or PLR-85 receiver.

2. LINE IN jacks

Connect these jacks to the TAPE REC jacks on the amplifier : White pin-plug White jack (L-Ch) Red pin-plug Red jack (R-Ch)
If humming occurs during playback
Interference from the receiver may cause a hum during tape playback. If this occurs, change the location of the tape deck from above the receiver to below it. Recording from AM radio broadcasts is difficult. This is not recommended since recordings often have a hum or noise.

3. REMOTE CONTROL jacks

Connect the supplied remote control cables to the REMOTE CONTROL jacks as shown in the above diagram. Connect the other end of the remote control cable to the rear of the matching STR-84 or PLR-85 receiver. The remote control function of this tape deck will only operate when connected to a matching Techwood receiver.
A remote control is not included with this tape deck.

CONTROLS AND INDICATORS

Front Panel
1. POWER STANDBY / ON button and Indicator 2. Cassette Holder 3. Deck I operation button
Forward/Rewind button ( Play button ( / ) Stop button ( ) / )
9. Pause button ( ) and Indicator
Press the button When you need to stop the tape temporaily during recording or playing.
10. Reverse mode selector
: Auto stop mode. : Auto reverse mode. : Continuous play mode. Refer to page 10. *
4. Dubbing button and Indicator
Press when dubbing the tape from Deck I to Deck II.
11. Deck II operation button
5. High speed dubbing button and Indicator
Press when dubbing the tape at a hi-speed.
6. Auto dubbing button and Indicator
It is convinient to use this function when dubbing a whole cassette tape from beginning to end at a normal speed or hi-speed.
7. Dolby noise reduction button and Indicator
OFF : Select for the tape recorded without DOLBY B NR. DOLBY B : Select for the tape recorded with DOLBY B NR.
8. Recording button and Indicator
Press this button to record a tape inserted in Deck II.

OPERATIONS

Basic Operations Continuous Play of cassette tape
1. Open the cassette holder by pressing PUSH OPEN lightly and insert the desired tape into either of the cassette holders. 2. Select the correct DOLBY NR type according to how the tape was recorded. OFF : Select for the tape recorded without DOLBY B NR. DOLBY B : Select for the tape recorded with DOLBY B NR. 3. Select the desired reverse mode. : Auto stop mode. : Auto reverse mode : Continuous play mode Refer to page 10. * 4. Select the desired play direction by pressing one of the play button ( / ). : For the forward play. : For the reverse play. 5. Press the stop ( ing to tape. ) button when you want to stop play-
This function is to play a cassette tape continuously until you stop the operation of the cassette tape. 1. Open the cassette holder by pressing PUSH OPEN lightly and insert the desired tape into either of the cassette holders. 2. Select the mode. - Continuous play mode. 3. Press play button Deck I or Deck II as applicable. - The indicator will light up and playing will start.
Note : If you press play button of Deck II while the cassette tape of Deck I is being played, the cassette tape of Deck II will begin to play.
Playing by use of SKIP button
Recording of a cassette tape
This function is used when you want to listen to the previous or next music item while playing the cassette tape. 1. Press play button , playing will start. 2. Press skip button. button If you press button while playing in forward direction, the forward direction indicator will blink and the system will play the next music item to the one being played. button If you press button while playing in forward direction, the backward direction indicator will blink and the system will search for the previous music item just before the one being played and play it.

A cassette can only be recorded in Deck II. Select the source to record from on your amplifier (CD, VCR, TUNER, etc,.) 1. Open the cassette holder on Deck II by pressing PUSH OPEN lightly and insert the desired tape to record on into the cassette holder. 2. Select the correct DOLBY NR type according to how the tape was recorded. OFF : Select if recording from another tape recorded without DOLBY B NR. DOLBY B : Select for all other sources. 3. Select the desired reverse mode. : To record on one side only. , : To record on both sides. Refer to page 10. * 4. Press pause button - The indicator will light up and the system is now ready to record. 5. Press record button. - Record indicator will turn on and the play direction indicators will flash. 6. Select the direction to record in by pressing either of the play ( / ) buttons. 7. Press the pause button again. - Pause indicator will turn off and recording will start. Notes : If you want to record both sides of the cassette tape when reverse mode switch is in or in , be sure to press forward direction play ( ) button. Otherwise, if the backward direction play ( ) button is pressed only side B of the cassette tape will be recorded on. When recording of both sides has been completed Deck II will automatically stop. This system has Automatic input Level Control circuit, when recording.
Dubbing of a cassette tape
To Prevent erasing of recorded sound
Tab for side1 Tab for side2

The tab with driver

1. Open the cassette holder by pressing PUSH OPEN lightly and insert the tape to be played into Deck I and the tape to be recorded on into Deck II. 2. Press dubbing button. - Record and Dubbing indicator will light up, and direction indicators ( / ) will blink. 3. Select the direction of the cassette tape for recording in Deck II. - The indicator in the selected button will stop blinking, and the other one will go out. 4. Select the direction of the cassette tape for playing in Deck I. - Dubbing will start in the selected direction.
If the tab is removed, recording is impossible even though you press REC button. This prevents recorded sound from being erased.

To record again

Auto Dubbing
It is convenient to use this function when dubbing the entire cassette tape from beginning to end. Press Auto dub button. - The cassette tapes of Deck I and Deck II will wind them selves backward to their end. When rewinding is completed. Auto dubbing will start. * Both sides of a cassette tape are recorded from beginning to end automatically regardless of the mode.
cover the solt with adhesive tape.

Using HI-SPEED button

Press the Hi-speed button when dubbing the cassette tape at a high speed. * When dubbing at a high speed, you can not listen to the sound out of the speaker.

OPERATION ACCORDING TO SELECTED MODE
While playing, dubbing or recording the operation of the deck will be determined according to mode selection switch. 1. Mode When a tape is played only in one direction to its end, deck will stop automatically. When playing a side 1 of the cassette tape. Deck I Deck II

Record

When the tape is recorded in one direction to its end, deck will stop automatically.
When playing a side 2 of the cassette tape.

Deck II Only

Dubbing
In case of dubbing of a tape, Deck I and Deck II will stop automatically at the end of a tape.
Deck I : Play Deck II : Record
Mode When a tape reaches the end, the tape starts to play the reverse side of the tape automatically. The tape continues to play from one direction to other direction until pressing stop button.

Deck I Deck II

When the tape is recorded in direction to its end, the deck starts to record automatically in direction and will stop at the end. Note : When recording in this mode, always select direction first.

Deck II

Mode Both sides of the tape in Deck I will play first, then Deck II will automatically play both sides of its tape. Playing continues until the stop button.
Continuous auto reverse playing of the tape from Deck I to Deck II.
When the tape is recorded in direction to its end, deck starts to record automatically in direction and will stop at the end of the tape.

Deck II : Record

TROUBLESHOOTING
To determine any problem with your tape deck, always check the most obvious possible causes first. If any problem still remains after your have checked the items below, consult your nearest TECHWOOD dealer. Problem No sound while the tape is operating. Poor tone quality. Probable Cause Volume of stereo amplifier is set to 0. Noise reduction switch is not in a correct position. Erase-prevention tabs on cassette are removed. Playback head is dirty. Remedy Adjust the volume properly. Set the switch appropriate to the kind of recorded tape. Cover the slots with adhesive tape.
REC button can not be operated.
Low volume or weak sound with mute intervals. Poor operation of repeat and skip function.

Clean the head with tape head cleaner.
The blank recorded length between two successive songs is not enough. Remote control cable is not connected to receiver. Not used with compatible receiver.
Make the blank tape length longer than 4 seconds between songs. Use supplied remote cable and connect to receiver. Remote functions only operate with matching STR-84 or PLR-85 receivers.
No remote control functions.

SPECIFICATIONS

DECK I (only for playing)
Track system : 4 Track, 2-channel stereo Tape Speed : 4.8 cm/sec Motor : DC Motor Frequency response : Normal: 40~14,000 Hz CrO2 : 40~15,000 Hz Metal : 40~16,000 Hz FF and REW Time : 120 sec (C-60 cassette tape)

General

Power Requirements : 120 V AC, 60 Hz Power Consumption : 11 W Dimensions (W x H x D) : 435 x 145 x 320 mm Weight (net) : 4.9 kg Standard Accessories : Audio Connection Cord x 2 Remote Control Connection Cord x 1 Owners Manual x 1 Improvements may result in specifications and features changing without notice. Illustrations may differ slightly from production models.
DECK II (for recording/playing)
Track system : 4 Track, 2-channel stereo Recording system : AC bias Erasing system : AC erasing Tape Speed : 4.8 cm/sec Motor : DC Motor Frequency response : Normal : 40~14,000 Hz CrO2 : 40~15,000 Hz Metal : 40~16,000 Hz FF and REW Time : 120 sec (C-60 cassette tape) Wow / Flutter : 0.13% (JIS, WRMS) S/N ratio : DOLBY B NR OFF : 55 dB (CCIR/ARM) DOLBY B NR ON : 65 dB (CCIR/ARM)
WELTON U.S.A. 11625 COLUMBIA CENTER DR. SUITE 100 DALLAS, TEXAS 75229 PHONE: 972-243-5602 FAX: 972-243-5958

DDR 94

AV Digital Surround Receiver

OWNERS MANUAL

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
IMPORTANT SAFETY INSTRUCTIONS
CAUTION: < Read all of these Instructions. < Save these Instructions for later use. < Follow all Warnings and Instructions marked on the audio equipment. 1) Read Instructions All the safety and operating instructions should be read before the product is operated. 2) Retain Instructions The safety and operating instructions should be retained for future reference. 3) Heed Warnings All warnings on the product and in the operating instructions should be adhered to. 4) Follow Instructions All operating and use instructions should be followed. 5) Cleaning Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. 6) Attachments Do not use attachments not recommended by the product manufacturer as they may cause hazards. 7) Water and Moisture Do not use this product near water _ for example, near a bath tub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool; and the like. 8) Accessories Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturers instructions, and should use a mounting accessory recommended by the manufacturer. 9) A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to overturn. "Note to CATV system installer: This reminder is provided to call the CATV system installers attention to Section 820-40 of the NEC which provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical."
10) Ventilation Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating, and these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturers instructions have been adhered to. 11) Power Sources This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions. 12) Grounding or Polarization This product may be equipped with a polarized alternating-current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. 13) Power-Cord Protection Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product. 14) Outdoor Antenna Grounding If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.

Contents

TO THE USER
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against interference in a residential area. This device generates and uses radio frequency energy and if not installed and used in accordance with the instructions, it may cause interference to radio or TV reception. If this unit does cause interference with TV or radio reception you can try to correct the interference by one or more of the following measures: a) Reorient or relocate the receiving antenna. b) Increase the separation between the equipment and the receiver. c) Plug the equipment into a different outlet so that it is not on the same circuit as the receiver. If necessary, consult the dealer or an experienced radio/TV technician for additional suggestions. Before Use.....4 Connection....5 Remote Control Unit....10 Basic Operations....11 Radio Reception....13 Video Operations....16 Playing Video Sources....16 Tape Dubbing....16 S.A.V.E System Function...16 Available Surround Modes...17 Speaker Configuration...20 Delay Time....21 Test Tone.....22 Troubleshooting....23 Specifications....24
Changes or modifications to this equipment not expressly approved by WELTON U.S.A for compliance could void the user's authority to operate this equipment.
The equipment draws nominal nonoperating power from the AC outlet with its POWER switch in the STANDBY position.
For CANADA AC POWER CORD CONNECTION CAUTION:
TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.

Before Use

Read this before operation
< Choose the installation location of your unit carefully. Avoid placing it in direct sunlight or close to a source of heat. Also avoid locations subject to vibrations and excessive dust, heat, cold or moisture. < The ventilation holes should not be covered. Make sure there is enough space above and beside the amplifier/receiver (about 4 inches). Do not place a CD player or other equipment on top of the amplifier/receiver. < Do not open the cabinet as this might result in damage to the circuitry or electrical shock. If a foreign object should get into the set, contact your dealer. < When removing the power plug from the wall outlet, always pull directly on the plug, never yank the cord. < Do not attempt to clean the unit with chemical solvents as this might damage the finish. Use a clean, dry cloth. < Keep this manual in a safe place for future reference.

Before Connection

Turn off the power of all the equipment before making connections. Read instructions of each component you intend to use with this unit. < Be sure to insert each plug securely. To prevent hum and noise, do not bundle the connection cords with the power cord or speaker cord.

Speaker Connections

Caution: To avoid damaging the speakers with a sudden high-level signal, be sure to switch the power off before connecting the speakers. < Check the impedance of your speakers. Connect speaker with an impedance of 8 ohms or more. The amplifier's red speaker terminals are the + (positive) terminals and the black terminals are the _ (negative) terminals. < The + side of the speaker cable is marked to make it distinguishable from the _ side of the cable. Connect this marked side to the red + terminal and the unmarked side to the black terminal. < Prepare the speaker cords for connection by stripping off approximately 10 mm or less (no more as this could cause a short-circuit) of the outer insulation. Twist the wires tightly together so that they are not straggly :

Back-up Memory Function

This is the function which preserves the preset memory and most-recent memory functions. In the event of a power failure, or if the power cord of this unit is disconnected from the electric outlet, the back-up memory will preserve the preset memory and most-recent memory functions for as long as approximately 3 days. If the power supply is interrupted for 3 days or longer, the memory settings will be erased. When to Use RESET Switch < When this system is subjected to an electrical shock. < When the power is irregular. In these cases, try the following (in power on VCR/VIDEO 1 function.): Press the TUNING MODE button for more than 3 seconds. Note: If the TUNING MODE button is pressed for more than 3 seconds in VCR/VIDEO 1 function or Standby mode, all the memory will be erased.

How to connect

Press the lever, insert the stripped and twisted end (approx. 3/8") of the cord, then release the lever : Make sure it is fastened securely by pulling the cord lightly.

Connection

SPEAKERS, PRE OUT, AC OUTLETS

Power cord (AC)

Be sure to connect the power cord to an AC outlet which supplies the correct voltage. Hold the power plug when plugging or unplugging the power cord.

AC OUTLETS (SWITCHED)

These outlets are only active when the receiver is turned on. Caution: Make sure that the total power consumption of all equipment connected to the outlets on the receiver does not exceed 100 watts.
PRE OUT ( SUB WOOFER ) jack
Use this jack to connect a powered sub-woofer or passive sub-woofer with a power amplifier (OPTIONAL).
Speaker layout example when using SURROUND MODE or 3 STEREO

SURROUND

B A A D (OPTIONAL)

3 STEREO

B Center speaker
Positioning of the Speakers
The positioning of speakers differs according to the size and acoustics of the listening room. While actually listening to a program source, try various speaker positions to determine which layout provides the best surround effect. Place the speakers connected to "L" to your left, and "R" to your right.

A Front speakers

Use magnetic shielded speaker, if you are using it near your TV. Place a center speaker between the front speakers, on or below the TV. This speaker improves sonic imaging and depth of field. Be sure to connect a center speaker when using the 3 STEREO mode.

C Rear speakers

Install these speakers above the level of the listener's ears, to the left and right. Do not install the rear speakers too far behind the listening position. It might be effective to direct the rear speakers towards a wall or ceiling to further disperse the sound.

D Subwoofer (Optional)

Use magnetic shielded speakers, if you are using it near your TV. Place the front speakers in front of the listening position, to the left and right of a TV. Front speakers are required for all surround modes.
Reproduces powerful and deep bass sounds. Use a subwoofer with built-in amplifier. A Subwoofer is not required but may be added as an option
Connect the component with RCA to RCA cords. Make sure to connect : white plug to white jack(L:left) red plug to red jack(R:right) yellow plug to yellow jack(VIDEO)
DVD PLAYER, CABLE BOX, SATELLITE RECEIVER (DSS), TELEVISION (MONITOR)
If you use both S-Video and RCA composite cables to connect different video components to the DDR94, you must also use both S-Video and RCA composite cables to connect the TV monitor to the DDR94. For example, if you connect a DVD player to the DDR94 using S-Video cable and a VCR using an RCA to RCA composite cable, you must also connect the TV to the DDR94 using both types of cables. This requires an S-Video cable from the S-Video monitor out jack on the DDR94 to an S-Video input on the TV (ie. Video 1). In addition, you must use an RCA composite cable from the composite video monitor out jack on the DDR94 to an RCA composite video input on the TV but not the same input used for the S-Video cable(ie: Video 2). Using this type of dual cable video connection. you will need to switch the TV video input source from TV to Video 1 to Video 2 depending on the video source being played-TV, DVD or VCR. Audio connections: Some video components are equipped with special digital audio outputs (ie: DVD players). If your video component is equipped with a digital audio output, it is recommended that you connect to the DDR94 using a digital cable. Digital audio cables are required to use the DTS and Dolby Digital surround sound modes. If you do not use digital connections, the DDR94 will only operate in Dolby Pro Logic, Dolby 3 Stereo, Theater, Hall, Stadium and Disco surround modes. There are two types of digital cables - coaxial (75 ohm) and optical. The DDR94 is equipped with both types of digital inputs. These inputs are labeled DIGITAL/DTS/PCM on the rear of the unit. Connect the video component outputs to any one of the three digital inputs on the DDR94. If the video component is not equipped with a digital output, use a dual RCA to RCA composite audio cable to connect to the DDR94. Make sure to connect: White plug to white jack ( L : left ) Red plug to red jack ( R : right )

When connecting video components such as DVD players, cable boxes, satellite receivers and televisions, you can use different types of cables depending on how the video component is equipped. Video connections: If the video component is equipped with S-VIDEO jacks, it is recommended that it be connected to the DDR94 or directly to the television monitor using an S-VIDEO cable. S-Video cables provide better picture clarity and resolution. If the video component is not equipped with an S-VIDEO jack, use a conventional RCA to RCA composite cable to connect to the DDR94 or directly to the television. The above illustration shows how to connect video components to the DDR94. Note: When connection more than one video component to the DDR94 (ie: VCR and DVD player) it is easier to use either all S-Video cables or all RCA to RCA composite cables. This allows both video signals (DVD and VCR) to be sent through the DDR94 to the TV monitor using just one video input on the TV (S-Video or RCA). Regardless of the video component being played DVD or VCR, the picture will always appear on the same video input of the monitor.
Note: When an optical cable is used, remove the protection caps from the component and DDR94 before attempting to insert the optical cable. If not using an optical cable or if the cable is removed, always re-install the protection caps to prevent dirt and dust from entering the inputs. If using a coaxial digital cable, leave the protection caps in both the video component and DDR94.

CD, TAPE Jacks

CD, TAPE jacks
Connect the component with RCA to RCA cords. Make sure to connect : white plug to white jack(L:left) red plug to red jack(R:right)

DIGITAL IN/OUT terminals

If the CD player or tape player has digital outputs, connect the component with coaxial cables or optical cables. DIGITAL IN to DIGITAL OUT(CD, etc.) DIGITAL OUT to DIGITAL IN( MD, etc.) < Connect to any one of the DIGITAL IN terminals. < When using DIGITAL OPTICAL IN terminals, remove the caps from the terminals. When you do not use them, leave the caps in place. < To record digitally, connect the source(CD player, etc.) to DIGITAL IN and the recorder(MD, etc.) to DIGITAL OUT.

Remote Control Unit

Remote sensor

REMOTE SENSOR

REMOTE SENSOR window of the receiver or other component
Precautions concerning batteries < Be sure to insert the batteries with correct positive "+ " and negative "_ " polarities. < Use batteries of the same type. Never use different types of batteries together. < Rechargeable and non-rechargeable batteries can be used. Refer to the precautions on their labels. < When the remote control unit is not to be used for a long time (more than a month), remove the batteries from the remote control unit to prevent them from leaking. If they leak, wipe away the liquid inside the battery compartment and replace the batteries with new ones. < Do not heat or disassemble batteries and never dispose of old batteries by throwing them in a fire.

Remote Control unit

By using the provided remote control unit, the receiver and some other components including Techwood models DVDC94, DVDC95, CDC86,CDC85, and TDX85 can be controlled from your listening position. To use the remote control unit, point it at the REMOTE SENSOR window of the receiver(or other component). Notes: < Even if the remote control unit is operated within the effective range, remote control operation may be impossible if there are any obstacles between the unit and the remote control. < If the remote control unit is operated near other appliances which generate infrared rays, or if other remote control devices using infrared rays are used near the unit, it may operate incorrectly.

VIDEO 2

Battery lnstallation
Buttons for the Operation of Other Components
A tape deck operation buttons
When used with Techwood model TDX85.
B CD/DVD operation buttons
Remove the battery compartment cover. 2 Insert two "AAA" (R03, UM-4) dry batteries. Make sure that the batteries are inserted with their positive "+ " and negative "_ " poles positioned correctly. 3 Close the cover until it clicks. < If the distance required between the remote control unit and main unit decreases, the batteries are exhausted. In this case replace the batteries with new ones.
When used with Techwood models DVDC94, DVDC95, CDC85 or CDC86. Notes: < To simplify explanations, this manual refers to names of buttons and controls on the front panel, making no mention of the use of remote control unit. < The power is turned on/off (standby) by pressing the POWER button on the remote control unit in standby mode.

Basic Operations

Basic Operations (1)

Basic Operations (2)

Press the POWER button to ON. Select the desired source with the FUNCTION (source) selector. VCR/VID 1 TV/ VID 2 (OPT 1, OPT 2, COAX) AUX/ VID 3 (OPT 1, OPT 2, COAX) DVD/ CD (OPT 1, OPT 2, COAX) TAPE CD/ (OPT 1, OPT 2, COAX) TUNER (frequency) When TV, DVD, AUX or CD is selected, press the DIGITAL INPUT button and select "OPTICAL-1", "OPTICAL-2", "COAXIAL" or "ANALOG" in accordance with your connection.
POWER STANDBY/ON Button Press this button to turn the power on. Press it again to turn the system off (power standby mode). The STANDBY indicator lights up in power standby mode and goes out when this unit is turned on. SPEAKER Select Button With the unit in the STEREO mode, SPEAKERS A and B can be selected simultaneously. lf the unit is in any of the SURROUND MODEs (DTS, DOLBY DIGITAL, DOLBY PRO LOGIC, 3 STEREO, other SURROUND MODES), speaker selection is automatically limited to SPEAKERS A only,
If "DTS", "DOLBY DIGITAL" or "SOURCE" blinks on the display: A digital input souce(OPT 1, 2, COAX) has been selected, but the source isn't connected or is not switched on. In that case, connect and switch the source on, or select ANALOG by pressing the DIGITAL INPUT button. < If the DTS or DOLBY DIGITAL button is pressed in ANALOG mode, OPT 1 will be selected automatically. Please select OPT1, OPT2 or COAX in accordance with your connection.

2 Select the AM or FM by pressing the BAND button.
3 Press the MODE (TUNING) button to change to TUNING
mode. The "PRESET CH." indicator disappears from the display. < This button is used to select Tuning or Preset scan mode.
4 Select the station you want to listen to (auto selection).
Hold down the TUNING button for 0.5 to 2 seconds. When a station is tuned in, the tuning process will stop automatically. Press the TUNING button to stop the auto selection. < Selecting stations which cannot be tuned automatically (manual selection) Press the TUNING button repeatedly or hold it down and release it when the station you want to listen to is found. When the TUNING button is pressed momentarily (0.5 second or less), the frequency changes by a fixed step.
FM : 100 kHz steps AM: 10 kHz steps < "STEREO" is displayed when a stereo broadcast is tuned in. < "TUNED" is displayed when a broadcast is correctly tuned in.

Radio Reception (3)

Preset Tuning
This facility is used to store FM, AM broadcasting from Channel 1 to 30 respectively.
Automatic Memory Prestting
1 Select the TUNER mode by turning the FUNCTION selector. 2 Select the AM or FM by pressing the BAND selector
4 A How to select preset stations
Press the PRESET buttons or the numeric key(s) of the remote control unit to select a preset channel.

B About MEMORY SCAN

button.
3 Press the MEMORY button for more than 1.5 second.
Up to 30 of the best received stations in your area will be automatically stored.
You can scan the preset stations by this function. Press the MEMORY SCAN button. The preset stations will be selected for 5 seconds each. When you find the station you want to listen to, press the MEMORY SCAN button again. See next page to store the preset stations.

Manual Memory Presetting

FM: 100 kHz steps AM: 10 kHz steps Ex.: FM 107.5 MHz

Direct Tuning

Ex.: AM 1000 kHz
Select the TUNER mode by turning the FUNCTION selector.

Surround mode changes as follows whenever you press this button.
The surround system developed for movie theaters using this system is called "Dolby SR-D (Surround Digital)". Because each channel is completely independent, a realistic sound field with a "three-dimensional" feel is achieved which gives the sound a sense of distance, movement and relative position, creating a surprisingly real and powerful sense of presence. Some Dolby Digital programs carry information that allow you to compress the dynamic range of sound track, without degrading the sound quality, for softer sound effects when you listen late at night. * LFE: Low Frequency Extension This channel delivers separate non-directional bass signals to an optional subwoofer for more dynamic deep bass sound effects.
Manufactured under license from Dolby Laboratories "Dolby", "Pro Logic" and the double-D Symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works. 1992-1997 Dolby Laboratories, Inc. All rights reserved.
> DOLBY PRO LOGIC Surround
When playing recordings of live music, this mode provides a feeling similar to actually being in a concert hall. When this mode is selected, the normal program source is directed to the main speakers and a reverberated sound is directed to the surround speakers. This mode is suited to program sources which contain a large amount of reverberation.

> STADIUM Surround

Use this mode when playing movie or music videos which carry the U DOLBY SURROUND mark. This mode provides the effect of being in a movie theater or live concert house - an effect with an intensity which can only be obtained through DOLBY PRO LOGIC SURROUND. The main feature of DOLBY PRO LOGIC SURROUND is that the separation between the various channels is significantly improved from the 3 dB of previous systems to 26-40 dB. As a result, the effect of the front/back/ left/right movement of the sound image, as well as the sense of fixed position in the sound image, is much clearer and more dynamic than before. In addition, movie dialogue and other sounds which should naturally be heard from the center are output through an independent center channel, providing a high degree of focus for dialogue.

button will change the desired Speaker Configuration shown on the display. (ex.: F-LARGE, F-SMALL, CLARGE, C-NONE, S-LARGE etc.) When no action is taken for 5 seconds, the display returns to the normal mode.
2 Use the ADJUST (b /5 ) buttons to set the appropriate

status.

SURROUND SPEAKER Mode: < S-LARGE: The mode to choose if a large speaker is used or if a subwoofer is connected in parallel. The rear channels output is full range. < S-SMALL:The mode to choose if small speakers are used. Frequencies of 90Hz and below are output to the speaker selected by LFE/Bass Out.
SUBWOOFER OUTPUT < SUB-ON : Choose if a subwoofer is used. Low frequencies of 90Hz and below in the LFE channel and other selected channels are output to the subwoofer < SUB-OFF : Choose if no subwoofer is used. Low frequencies of 90Hz and below in the LFE channel and other selected channels are distributed between the front L and R speakers.

Delay Time

The delay time can be individually set for the Dolby Digital/Dolby Pro Logic modes using the DELAY TIME (CENTER/REAR) buttons. When you adjust the delay time in the Dolby Digital mode, an additional 15 ms is automatically added to the surround channels in the Dolby Pro Logic mode. The current setting is shown on the display. Delay Time Setting Adjustable Range DOLBY DIGITAL Mode: 0 ~ 15 ms in 1 ms step (S-Delay) 0 ~ 5 ms in 1 ms step (C-Delay) DOLBY PRO LOGIC Mode: 15 ~ 30 ms in 1 ms step (S-Delay) In the surround modes, the sound from the rear speakers should be delayed slightly, relative to that from the front speakers. The optimum delay time will depend on acoustic properties, whether the walls and furnishings reflect or absorb sound, etc. It is recommended that you try different delay times to obtain the best effect. The delay is digitally synthesized, for the highest sound quality with minimum noise and distortion. The delay time can be set independently for each surround mode using the DELAY TIME buttons, with the current setting shown in the display.

Test Tone

Balancing relative volume between speakers
The test tone function is useful to adjust the relative volume between speakers in DTS, DOLBY DIGITAL or DOLBY PRO LOGIC mode. Once the balance is set, you don't have to change the balance as long as the speakers aren't moved.
1 Press the TEST TONE button in DTS, Dolby Digital or Dolby
PRO LOGIC mode. The test tone is emitted from each speaker in the following order at 2-second intervals.
2 Adjust the master volume to the normal listening level.
3 Adjust the volume of center and rear speakers so that the
test tone from each speakers sounds same. Select a speaker by pressing the LEVEL SELECT button, and adjust the level by pressing the ADJUST button (b /5 ), or adjust the channel level directly by pressing the remote contral unit (Center, Rear, Subwoofer : b /5 ). < The level of rear, center and subwoofer can be adjusted in 1 dB steps from -10 dB to +10 dB.

4 When the setting is finished, press the TEST TONE button to
SKIP REPEA T DISC SKIP STEREO SURROUND R.LEVEL MODE TEST TONE C.LEVEL C.LEVEL SUB W. LEVEL NIGHT MODE DIGIT AL INPUT R.LEVEL DELAY CENTER REAR
stop the test tone. Note : < If certain speakers are not being used, (for example, no center speaker) the noise sequencer will automatically skip over that channel. < Press the LEVEL SELECT, ADJUST button for more than 5 seconds to reset the level to its original setting.

MASTER VOLUME

LEVEL SELECT

ADJUST

TROUBLESHOOTING
To determine any problem with your receiver, always check the most obvious possible causes first. If any problem still remains after your have checked the items below, consult your nearest TECHWOOD dealer. Problem Amplifier
When listening to the music in stereo, left/right speakers sounds reversed. Low hum or buzzer sound. Sound is only heard from one channel. Speakers are connected wrong. Power line of a fluorescent light is installed near this product. One of the input cords is disconnected. The BALANCE control is set to one side. Sound cuts off during listening to the music or no sound even though power is ON. No sound. Speaker impedance is less than prescribed for this unit. A/B Speaker selectors are turned off. After checking, if needed, reconnect. Place this product as far away as possible from electric devices with interference. Connect the input cords securely. Adjust the BALANCE control. After turning off the power and then turning it on again, reduce the volume or change to the correct 8 ohm speakers. Press the A or B speaker selector as applicable.

Probable Cause

Remedy

Low bass response.

Speaker polarity (+/) is reversed.
Check all speakers for correct polarity.
An unusual hissing noise is heard when listening to the broadcast in stereo, but not heard when listening monaurally. Noise is excessive in both stereo and monaural broadcasts. A slight noise may be heard because the method used for modulation of FM stereo broadcasts is different than that used for monaural broadcasts. Poor location and/or direction of the antenna. Transmitting station is too far away. Sound is distorted and/or the volume level becomes low. Broadcast signals are being disturbed. Try reducing the treble sound by turning the treble controls. Try changing the location, height and/or direction of the antenna. Set the FM mode to monaural by pressing the STEREO/MONO button. (Note that the broadcast will then be heard as monaural sound). If an indoor antenna is being used, change to an outdoor antenna. Try using an antenna with more elements.

Speaker system connections are not Excessive distortion in the sound of stereo correct. broadcasts. Surround Effects <Important :> The center and rear speakers only operate when the unit is set on a Surround Sound mode and the source material being played is recorded or broadcast in Dolby Digital, DTS or Dolby Pro Logic surround sound. Stereo broadcasts or recordings will produce some rear channel effects when played in a surround mode. However, mono sources will not produce any sound from the rear speakers. No sound from the rear speakers. SURROUND ON/OFF button is set to OFF. Source being played is not recorded or broadcast in surround sound or stereo. One or more rear speaker wires is not making good contact. No sound from the center speaker.
SURROUND mode button is not set to DOLBY DIGITAL, DTS, DOLBY PRO LOGIC or 3 STEREO.
Set the button to the desired surround mode position. Use surround or stereo source. Check all rear speaker wires for good connection. Set the button to DOLBY DIGITAL, DTS, DOLBY PRO LOGIC or 3 STEREO.
Remote control not working. The batteries are exhausted. The remote control unit is too far from the receiver or out of the effective range. Replace with new batteries. Operate the remote control unit within the effective range.

Specifications

Amplifier Section
Stereo output Power F. T.C. Rating
200 Watts total. 100 Watts RMS per channel minimun, one channels driven into 8 ohms from 20Hz to 20KHz with no more than 0.9% T.H.D

AM Tuner Section

Tuning Range:
530 kHz 1,720 kHz (10 kHz steps)
Usable Sensitivity: 55 dB/m Total Harmonic Distortion: 0.8% at 85 dB/m Signal-to-Noise Ratio: 45 dB at 85 dB/m
Surround Output Power (0.9 % THD, 1 kHz, 8 ohms):
500 Watts total. 100 + 100 watts (Front) 100 watts (Center) 100 + 100 watts (Rear)

Video Section

Input Sensitivity/Impedance: 1.0 Vp-p/75 ohms Output Level/Impedance: 1.0 Vp-p/75 ohms

Delay Time:

DOLBY DIGITAL: REAR ms CENTER ms DOLBY PRO LOGIC: REAR ms

General

Power Requirements:

120 V AC, 60 Hz

Audio Input Sensitivity/Impedance: *LINE: 220 mV/47 k ohms Output Level/Impedance:

TAPE REC: 200 mV/2.2 k ohms

Power Consumption:

AC Outlets:
Switched x 2, Total 100 W max. (1 A max.)
Frequency Response: *LINE: 20 Hz 65 kHz, +1/ 3 dB Signal-to-Noise Ratio: *LINE: 95dB (IHF-A) Tone Control:
BASS: 10 dB at 100 Hz TREBLE: 10 dB at 10 kHz

Dimensions (W x H x D)

435 x 165 x 350 mm (17-1/8" x 6-1/2" x 13-3/4")
Weight (net): 9.4kg (20-11/16lb) Standard Accessories:
AM Loop Antenna x 1 FM T-type Antenna x 1 Remote Control Unit x 1 Owers Manual x 1 AAA Batteries x 2 Warranty Card x 1

Digital Audio Section

Sampling Frequency: 32 kHz, 44.1 kHz, 48 kHz, 96 kHz DIGITAL Input Level/Impedance:
DIGITAL 1, 2 (OPTICAL): 15 dBm 21 dBm DIGITAL 3 (COAXIAL): 0.5 Vp-p / 75 ohms
* LINE means CD, TAPE, VCR/VIDEO 1, TV/VIDEO 2,
AUX/VIDEO 3 and DVD/CD. < Improvements may result in specifications and features changing without notice. < Illustrations may differ slightly from production models.

FM Tuner Section

(Without notes 100.1 MHz, 65 dBf)
87.5 MHz 108.0 MHz (100 kHz steps)
Usable Sensitivity (IHF):

Mono: 11.2 dBf

50 dB Quieting Sensitivity:
Mono: 15.3 dBf Stereo: 38.5 dBf Capture Ratio: 2.0 dB
Image Rejection Ratio: 45 dB AM Suppression Ratio: 55 dB Total Harmonic Distortion (1 kHz):

Mono: 0.4% Stereo: 0.5%

Frequency Response: 30 Hz 15 kHz, +1/ 1.5 dB Stereo Separation (1 kHz): 40 dB Signal-to-Noise Ratio:
Mono: 75 dB Stereo: 70 dB
WELTON U.S.A. 11625 COLUMBIA CENTER DR. SUITE 100 DALLAS, TEXAS 75229 PHONE: 972-243-5602 FAX: 972-243-5958

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