A.HORIUCHI

Other Performance Features
ONKYO EUROPE ELECTRONICS GmbH
* 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 Confidential Unpublished Works. 1992-1997 Dolby Laboratories, Inc. All rights reserved. **Manufactured under license from Digital Theater Systems, Inc. US Pat. No.5,451,942 and other worldwide patents issues and pending. DTS and DTS Digital Surround are trademarks of Digital Theater Systems, Inc. 1996 Digital Theater Systems, Inc. All rights reserved.

Before using this unit

Setting the AM tuning step frequency (Worldwide models only)
Worldwide models are equipped with a switch that controls the AM band tuning steps. Please set this switch to match the AM band tuning step frequency in your area. U.S.A. and Canada: 10 kHz Other areas: 9 kHz

AM FREQUENCY STEP

10 k Hz 9 k Hz
3. After batteries are installed and seated correctly, replace the compartment cover.

ANTENNA

SUB WOOFER PRE OUT

MONITOR OUT

DVD VIDEO 1

VIDEO 2 S VIDEO

OUT AM

IN IN IN

IN FM 75

DIGITAL INPUT

MONITOR OUT OPTICAL
L CAUTION: SPEAKER IMPEDANCE

CENTER SPEAKER

REMOTE CONTROL

SURROUND SPEAKERS

COAXIAL
6 OHMS MIN. PER EACH SPEAKER TERMINAL

AC OUTLETS

SWITCHED TOTAL 100W MAX.

AV RECEIVER

GND VIDEO 1

MODEL NO. TX-DS494

RATING: AC 120 / 220 -230 V 50 / 60 Hz 260 W

CD VIDEO 2

VOLTAGE SELECTOR

220-230 V 120 V

IN SUB WOOFER

CENTER

MULTI CHANNEL INPUT

FRONT SPEAKERS

Notes: Do not mix new batteries with old batteries or different kinds of batteries. To avoid corrosion, remove the batteries if the remote controller is not to be used for a long time. Remove dead batteries immediately to avoid damage from corrosion. If the remote controller does not operate smoothly, replace both batteries at the same time. The life of the batteries supplied is about six months but this will vary depending on usage.
Setting the voltage selector (Worldwide models only)
Worldwide models are equipped with a voltage selector to conform with local power supplies. Be sure to set this switch to match the voltage of the power supply in your area before plugging in the unit. Determine the proper voltage for your area: 220-230 V or 120 V. If the preset voltage is not correct for your area, insert a screwdriver into the groove in the switch. Slide the switch all the way to the right (120 V) or to the left (220-230 V), whichever is appropriate.
ANTENNA SUB WOOFER PRE OUT MONITOR OUT DVD VIDEO 1 VIDEO 2 S VIDEO

J Multi function display

In usual operation, shows the current input source and volume. When the FM or AM input is selected, it shows the frequency and preset number. When the DISPLAY button is pressed, it shows the listening mode and input source format. However, it does not show the source format when the FM or AM source is selected.

FM MODE button

Press to switch the reception mode between stereo and monaural. If audio is interrupted or noise interferes with audio during FM stereo broadcasting, press this button to switch to the monaural reception mode.
RC-443S (For models other than North American models)
For detailed descriptions on the buttons, see Front panel facilities on pages 6 through 8.
ONT RE M OTE CROLLER S RC-

SLEEP button

STANDBY/ ON SLEEP

DIMMER DISPLAY

INPUT SELECTOR

0 = ~ !

For setting the sleep time. This button is provided only on the remote controller (refer to page 23).

VIDEO 1 VIDEO 2

Turns on the TX-DS494 or put it in standby.
TUNER SUR MODE SW MODE AUDIO SEL PRESE T

INPUT SELECTOR buttons

For selecting the input source.

STANDBY/ ON

SUR MODE button
Press to select the surround mode.

MUTING

TOP MENU ENTER

VOLUME

RETURN SETUP
DVD/CD/TAPE operation buttons

TEST TONE CH SEL

For operating z-connected Onkyo components connected to the TX-DS494. When your remote controller is RC-444M, you can operate TV, VCR, satellite tuner and cable TV tuner from other brand than Onkyo by storing the pre-programming code. For detailed descriptions on the buttons, see Using remote controller on page 30 and Pre-programming remote controller (North American models only) on page 32.
RC-444M (For North American models)
TEST TONE/CH SEL/LEVEL 5/ buttons
For setting the output levels for each speaker. These buttons are provided only on the remote controller (refer to page 21).
ON RE M OTE C4 44TROLLER M RC-
For adjusting the brightness of the front display.
For changing the display.

CABLE SATELLITE

TUNER PRESET 5/ button
For selecting a tuner preset channel.

T V VOL

AUDIO SEL button
Press to select an audio input signal format other than FM, AM and PHONO.

TV/ VCR

MODE buttons
For selecting the component to be operated by the remote controller.

MUTING button

Activates the mute function. This button is provided only on the remote controller (refer to page 23).

VOLUME 5/ button

For adjusting the volume.

Rear panel facilities

Here is an explanation of the terminals found on the rear of the TX-DS494 and how they are used. Before connecting your audio and video components, be sure to read this section carefully and then proceed to the explanations on how to connect each individual component (refer to page 12). Be sure to always refer to the instructions that came with the component that you are connecting. Do not plug in the power cord until all connections have been made. For input jacks, red connectors (marked R) are used for the right channel, white connectors (marked L) are used for the left channel, and yellow connectors (marked VIDEO) are used for video connections. Insert all plugs and connectors securely. Improper connections can result in noise, poor performance, or damage to the equipment.

Improper connection

Inserted completely
Do not bind audio/video connection cables with power cords and speaker cables. Doing so may adversely effect the picture and sound quality.
SUB WOOFER PRE OUT MONITOR OUT
DVD VIDEO 1 VIDEO 2 S VIDEO
AC 120V 60Hz SWITCHED TOTAL 120 W 1A MAX.

MODEL NO. TX-DS 494

VIDEO IN/OUT
These terminals are for connecting the FM antenna and AM antenna (refer to page 18).
Use this GND terminal for connecting the ground (or earth) wire if a turntable is connected. Refer to Connecting a turntable on page 13.
There are 3 video inputs (each one includes both RCA type and S video configurations) and 1 RCA type video output. Connect DVD players, LD players, VCRs or other video components to the video inputs. The video output channel can be used to be connected to video tape recorder for making recordings.

RCA type jack

S Video jack
This terminal is for connecting an active subwoofer.

SPEAKERS

The monitor output includes both RCA type and S video configurations. This output is for connecting television monitors or projectors.
Speaker terminals are provided for the front left, front right, center, surround left and surround right speakers. Speaker outputs are compatible with banana plug connectors (other than European models).

AUDIO IN/OUT

z (REMOTE CONTROL)
These are the analog audio inputs and outputs. There are 6 audio inputs (3 of which are linked to video inputs) and 2 audio outputs (1 of which are linked to a video output). The audio jacks are nominally labeled for turntables, compact disc players, cassette tape decks, and DVD players. To the audio jacks for VIDEO 1 and 2 connect the audio output from LD players, VCRs or other video components. The audio inputs and outputs require RCA type connectors.

RCA type

Connect the Onkyo components that have z connectors such as a CD player, and cassette tape deck using the z cables provided with them. When these components are interconnected, they can be controlled from the remote controller provided with the TX-DS494. After connecting the z connectors, check the operation of the remote controller buttons for use in controlling other components (refer to page 30).

z connector

When connecting a VCR or other video component, make sure you connect the audio and video leads together (i.e., both to VIDEO 1). The PHONO jacks are designed for use with turntables that use moving magnet cartridges.
Ex: Onkyo DVD Player z connector Ex: Onkyo CD player
DIGITAL INPUT (OPTICAL/COAXIAL)
Ex: Onkyo cassette tape deck
These are the digital audio inputs. There are 2 digital inputs with coaxial jacks and 1 with optical jacks. The inputs accept digital audio signals from a compact disc, LD, DVD, or other digital source component.

Optical fiber cable

2. Insert the bottom edge of the outer frame into the groove on the stand.

Insert into the groove.

3. Extend the antenna cord. Connecting the FM indoor antenna

North American models:

1. Strip away the insulation from the end of the cord.

FM indoor antenna

Connecting the AM loop antenna 1. Press down the lever.
2. Fully insert the stripped end of the cord.
2. Insert the end of the cable into the hole.

3. Release the lever.

The lever will return to the original position.
Except for North American models:
Fully insert the end of the cord.

AM loop antenna

ANTENNA SUB WOOFER PRE OUT
The FM indoor antenna is for indoor use only. During use, extend the antenna and move it in various directions until the clearest signal is received. Fix it with push pins or similar implements in the position that will cause the least amount of distortion. If the reception is not very clear with the attached FM indoor antenna, the use of an outdoor antenna is recommended.
Assembling the AM loop antenna 1. Rotate the outer frame of the antenna.
Either of the split ends of the AM antenna can be connected to either terminal. Unlike speaker cabling, there is no polarity for AM broadcast signals. The AM loop antenna is for indoor use only. Set it in the direction and position where you receive signals clearly. Put it as far away as possible from the TX-DS494, televisions, speaker cables, and power cords. When reception is not satisfactory with the attached AM loop antenna alone, connection of an outdoor antenna is recommended.
If the reception condition cannot be improved by adjusting the provided antenna, install an outdoor antenna and connect it to this unit.
4. Cut the ferrite core wire.
Cut the ferrite core wire with nippers, etc.
Connecting an FM outdoor antenna
Please make sure that you follow the considerations: Keep the antenna away from noise sources (neon signs, busy roads, etc.). It is dangerous to put the antenna close to power lines. Keep it well away from power lines, transformers, etc. To avoid the risk of lightning and electrical shock, grounding is necessary. Follow item 14 of the Important Safeguards on page 2 when you install the outdoor antenna.

FM outdoor antenna

Distribute the wire along the groove.

5. Reinstall the cover.

The cover
Connecting the 300 ribbon wire 1. Loosen the screws with a screwdriver.

Directional linkage

Do not use the same antenna for both FM and TV (or VCR) reception since the FM and TV (or VCR) signals can interfere with each other. If you must use a common FM/TV (or VCR) antenna, use a directional linkage type splitter.
2. Wrap the wire these screws.

around

3. Tighten the screws with a screwdriver.

To TX-DS494

To TV (or VCR)
Connecting the antenna cable to the 75/300 antenna adapter (Worldwide models only) Connecting the coaxial cable
Connecting an AM outdoor antenna
An outdoor antenna will be more effective if it is stretched horizontally above a window or outside.

AM loop antenna (Indoor)

1. Prepare the coaxial cable as shown in the diagram.
Outdoor antenna Connect both antennas.

6 mm mm mm

2. With your fingernail, or a small screwdriver, press the stoppers of the 75/300 antenna adapter outward and remove the cover.

Expand the stoppers.

3. Connect the 75/300 antenna adapter to the coaxial cable.
Clamp with radio pliers, etc.
Notes: Do not remove the AM loop antenna. To avoid the risk of lightning and electrical shock, grounding is necessary. Follow item 14 of the Important Safeguards on page 2 when you install the outdoor antenna.
Push in the extremity of the conductor wire.

Connecting the power

ONTR RE M OTE C4 43S OLLER RC-

STEREO LISTENING MODE

/ DTS SURROUND

RETURN

PHONES VCR BASS TREBLE

To wall outlet

The TX-DS494 is shipped with the main power (POWER) switch in the on position (_ ON). When the power cord is plugged in for the first time, the TX-DS494 will automatically enter the standby state and the STANDBY indicator will light (same condition after step 2 below). Before you plug in the TX-DS494, confirm that all connections have been made properly. Turning on the power may cause a momentary power surge, which might interfere with other electrical equipment on the same circuit, such as computers. If this happens, use a wall outlet on a different circuit.

3. Make sure that the SPEAKERS A indicator lights up in the display.
If it does not light, press the SPEAKERS A button.
4. Start playing the selected input source.
Follow the operating instructions for the source device.
5. Adjust the volume with the MASTER VOLUME dial on the front panel or the VOLUME 5/ buttons on the remote controller.
Turn the MASTER VOLUME dial clockwise to increase the volume or counterclockwise to decrease it.
6. Adjust the tone with the BASS and TREBLE control knobs on the front panel.
Turn the BASS and TREBLE control knobs to adjust the bass and treble response from the Front speakers (refer to page 8). Note: If you hear no sound from the speakers, check the following items: Make sure that all devices and speakers are connected correctly and securely. The sound is muted when the MUTING indicator flashes. Press the MUTING button on the remote controller to cancel the mute function (refer to page 23). When you select a source that is connected to the DIGITAL INPUT jacks on the rear panel, you must select digital input (refer to page 12).
Setting the input signal format
If the input source is DVD, CD, VIDEO 1, VIDEO 2 or TAPE, you can specify the input signal format. With the initial setting, AUTO is assigned to the DVD, CD and VIDEO 1 inputs, and ANALOG is assigned to the TAPE and VIDEO 2 inputs. You can change this according to the signal format of the input source. For example, follow the steps below to specify the input signal format for the VIDEO 2 input:
Sleep function (Remote controller only)
The sleep timer can turn off the power to the system after a specified time period.
Press the SLEEP button on the remote controller.
The SLEEP indicator will light and SLEEP 90 MIN (the TX-DS494 will turn off after 90 minutes) appears in the display.
1. Press the VIDEO 2 button.
VIDEO 2 is selected as the input source and VIDEO 2 appears in the display.
2. Press the AUDIO SELECTOR button.
The current setting is displayed.
Pressing the SLEEP button each time reduces the time value in 10-minute increments. To cancel the sleep function, press the SLEEP button when the time displayed is less than 10 minutes. While the sleep function is enabled, you can press the SLEEP button to see how much time is left.
3. Press the AUDIO SELECTOR button repeatedly until the desired input signal format is displayed.
Each press of the button switches the displayed input format as follows. AUTO is skipped when the selected input is not assigned to the DIGITAL INPUT jacks (refer to page 12).

The surround modes that can be selected are variable depending on the signal formats employed with the input sources. Input source signal format Source software Listening mode STEREO*1 PRO LOGIC II* DOLBY D DTS ORCHESTRA* ALL CH ST* MULTI CH

*1 *2 *3 *4 *5 *6

Analog

Tape, Record, Tuner

CD, Audio DVD, Video DVD

Dolby Digital*5

Video DVD, LD, Digital satellite broadcast

CD, LD, Video DVD

MULTI CH*6

Video DVD

G G G G G G G G

UNPLUGGED*3

Only STEREO can be selected when SP SEL is set to 2 ch, when SPEAKERS B is selected or when headphones are used. When SP SEL is set to 3 ch, 3 ST is displayed in place of PL II. These modes cannot be selected when SP SEL is set to 2 ch or 3 ch. Only STEREO can be selected when the PCM source has been recorded with a sampling rate 96 kHz. Only DOLBY D (PL II if the source is a 2-channel source) or STEREO can be selected when Dolby Digital surround audio is reproduced. The surround mode cannot be selected when MULTI CH is selected.
Selecting DOLBY PRO LOGIC II surround 1. Press an input selector button to select the desired sound source. 2. Press the /DTS SURROUND button repeatedly to select DOLBY PRO LOGIC II.
The selected mode appears in the display. Each time you press the button, the surround mode changes as follows:
You can adjust the level of each speaker.
1. Press the CH SEL button on the remote controller to select a speaker. 2. Press the LEVEL 5/ buttons on the remote controller to raise or lower the level. The speaker levels set here are cleared when this unit is set to STANDBY. (The speaker levels return to the levels set using the test tone.) When the TEST TONE button on the remote controller is pressed after the above adjustment, the set levels will become the levels adjusted using the test tone by overwriting the existing ones.
3. Play the selected sound source.
Selecting DOLBY DIGITAL/DTS surround 1. Press an input selector button to select the desired sound source. 2. Press the /DTS SURROUND button. 3. Play the selected sound source. You can adjust the level of each speaker.

1, 5 CD player

1, 5 Video cassette recorder
2. Start recording at the recording component as desired.
Notes: You can record analog audio, but not digital audio. Make sure that you have made a correct analog connection. If you change the input source during recording, you will record the signals from the newly selected input source. You cannot record the surround effects. You cannot record the source connected to the MULTI CHANNEL INPUT port.
1. Insert a CD in the CD player and insert a tape in the video camera connected to the VIDEO 1. 2. Insert a video tape for recording in the video cassette recorder connected to VIDEO 2 OUT. 3. Press the VIDEO 1 input selector button. 4. Press the CD input selector button.
This switches the audio output to CD, but the video output remains VIDEO 1 that has been selected in step 3.
Recording the video from one source and the audio from another
You can add the sound from one source to the video of another source to make your own video recordings. Below is an example of recording the sound from a compact disc player connected to CD L/R jacks and the video from a video camera connected to VIDEO 1 IN VIDEO jack to video cassette tape in a video cassette recorder connected to the VIDEO 2 OUT L/R and VIDEO jacks.
5. Start recording on the video cassette recorder and start playing at the CD player and video camera as desired.
The recorded video signal becomes the output from the video camera and recorded audio signal becomes that from the CD player. Notes: You can record analog audio, but not digital audio. Make sure that you have made a correct analog connection. If you change the input source during recording, you will record the audio signals from the newly selected input source and the video signals assigned to that input source. You cannot record the surround effects.

Using remote controller

You can operate the z-connected Onkyo CD player, cassette tape deck or DVD player with the remote controller provided with the TX-DS494. The illustration shows the RC-443S remote controller.
Controlling an Onkyo CD player
The z connector of the Onkyo compact disc player must be connected to the TX-DS494 (refer to page 11).
1. Press the CD MODE button. 2. Press the STANDBY/ON button to turn on the Onkyo compact disc player. 3. Press the desired operation button.
s e : Starts playback of CD. : Stops playback, fast forward or fast reverse. STANDBY/ON
CD MODE CD operation buttons
f : Fast forwards the CD. d : Fast reverses the CD. 2/8 : Lets playback pause temporarily. w : Skips to the beginning of the next track. q : Skips to the beginning of the current or previous track. DISC : This button is valid when the CD changer is used and selects the disc to be played.

DISC MUTING

Controlling an Onkyo cassette tape deck
The z connector of the Onkyo cassette tape deck must be connected to the TX-DS494 (refer to page 11).
1. Press the TAPE MODE button. 2. Press the desired operation button.
s e : Plays side A (the side facing the front) of tape. : Stops playback, recording, fast forward or rewinding.
f : Fast forwards the tape.
d : Rewinds the tape. 2/8 : Plays side B (the side facing the rear) of the tape. w : Fast forwards the tape till the beginning of the next music. q : Rewinds the tape till the beginning of the current or previous music.

TAPE MODE

TAPE operation buttons
Controlling an Onkyo DVD player
The z connector of the Onkyo DVD player must be connected to the TX-DS494 (refer to page 11).
1. Press the DVD MODE button. 2. Press the STANDBY/ON button to turn on the Onkyo DVD player. 3. Press the desired operation button. DVD operation buttons
s e : Starts playback of DVD.

: Stops playback.

DVD MODE
f : Searches the disc in the forward direction. d : Searches the disc in the reverse direction. 2/8 : Lets playback pause temporarily or advances the disc frame by frame. w : Starts playback from the beginning of the next chapter/track. q : Starts playback from the beginning of the current chapter/track. DISC : This button is valid when the DVD changer is used and selects the disc to be played.
DVD operation buttons OSD operation buttons

OSD operation buttons

TOP MENU : Displays the top menu of each DVD disc. MENU RETURN SETUP 5//2/3 ENTER : Displays a menu recorded in the DVD disc. : Returns to the previous menu. : Displays the setup menu. : Selects an item in a menu. : Enters the selection in memory.
Pre-programming remote controller (North American models only)
Pre-programming code is only available on the RC-444M remote controller for TX-DS494 North American model.

Controlling a DVD player

Buttons with programmed usage and operations are the same as the operational buttons on page 31.
Learning a pre-programming code
You can make RC-444M remote controller to operate a product from other brand than Onkyo by storing the pre-programming code of the brand in the RC-444M.

No picture appears on the TV screen (or monitor).
TV (or monitor) is not set to receive the output signals from the receiver. Set the TV (or monitor) to the receiver input. Video cable is not connected securely. Check connections (pages 10-15).
No sound or very low volume from subwoofer.
Subwoofer mode is set to OFF. Check the subwoofer mode setting (page 21). Subwoofer mode setting is improper. Check the subwoofer mode setting (page 21).
FM/AM TUNER AM stations cannot be received.
AM loop antenna is not attached. Connect the included AM loop antenna to the AM antenna terminals (page 18).
REMOTE CONTROLLER Front panel controls function but remote controller does not.
No batteries in remote controller. Insert batteries (page 5). Batteries have worn out. Replace batteries (page 5). Remote controller is not pointed at the remote sensor of the TX-DS494. Point the remote controller at the remote sensor of the TX-DS494 (page 5). Remote controller is too far from the TX-DS494. Operate the remote controller within 5 meters (16 feet) (page 5).
Buzzing noise on AM (particularly conspicuous at night or with weak stations).
Noise from electrical apparatus such as fluorescent lamp. Move the AM loop antenna to different position (page 18). Set up an outdoor AM antenna (page 19).
High-pitched noise or buzzing noise on AM.
Noise from TV set. Place the AM loop antenna as far as possible from the TV. Move unit away from TV set.
Crackling noise on AM, FM.
Noise caused by turning fluorescent lamp on and off. Move antenna as far as possible from the fluorescent lamp. Noise from automobile ignition. Install an FM outdoor antenna as far as possible from the road (page 19). Change the position or direction of the outdoor antenna.
RC-444M remote controller does not operate Onkyo DVD player properly (North American models only).
Pre-programming code is improper. Change the pre-program code (page 32).
OTHER LATE NIGHT function cannot be used.
TUNED and STEREO indicators light on but sound is distorted and stereo separation is bad.

Station is too strong. Change to FM indoor antenna (page 18). Multiple reflection of the radio waves because of tall buildings or mountains. Use antenna which has better directivity and select a point where the distortion is least (page 19).
Playback source is not Dolby Digital encoded. Check that the DIGITAL indicator lights up in the display (pages 8, 28).
Multichannel audio is not output.
Input signal format is set to AUTO or ANALOG. Check that the component is connected to the MULTI CHANNEL INPUT port and check the input signal format setting (pages 11, 23).
TUNED and STEREO indicators flicker and hiss is heard on FM.
Station is too weak. Install an outdoor FM antenna (page 19). Stereo FM broadcasts cover only about half the distance of an ordinary broadcast. Change the position or direction of the outdoor antenna. Also refer to the respective instruction manuals of the compact disc player, DVD player, video cassette recorder, TV monitor, etc., that compose your entertainment system. The TX-DS494 contains an internal microcomputer that performs high-level operations. However, on extremely rare occasions, noise or interference from an external source or static electricity may cause faulty operation. If this occurs, unplug the power cord from the wall outlet, wait five or more seconds, and then plug it back in. This should correct the situation. *To reset the surround mode and other settings to the factory default settings, hold down the VIDEO 1 button with the TX-DS494 turned on and then press the SPEAKERS A button. CLEAR appears in the front display and the TX-DS494 enters the standby state.

No station is recalled.

The power cord has been unplugged or the POWER switch has been turned off for a long time. The memory contents are lost. Store all stations again (page 25).

Specifications

AMPLIFIER SECTION
Continuous Average Power output (FTC) All channels: 55 watts per channel min. RMS at 8 ohms, 2 channels driven from 20 Hz to 20 kHz with no more than 0.08% total harmonic distortion. 70 watts min. RMS at 6 ohms, 2 channels driven from 1 kHz with no more than 0.1% total harmonic distortion. Continuous Power output (DIN) 75 watts 5 at 6 ohms Maximum Power output (EIAJ) 100 watts 5 at 6 ohms Total Harmonic Distortion: 0.08% at rated power (Front) IM Distortion: 0.08% at rated power (Front) Damping Factor: 60 at 8 ohms (Front) Input Sensitivity and Impedance PHONO: 2.5 mV, 50 kohms LINE (CD, TAPE, DVD, VIDEO 1, 2): 200 mV, 50 kohms MULTICHANNEL INPUT (FRONT L/R, SURROUND L/R, CENTER): 200 mV, 50 kohms (SUBWOOFER): 36 mV, 50 kohms DIGITAL 2 (COAXIAL): 0.5 Vp-p, 75 ohms Output Level and Impedance Rec out (TAPE, VIDEO 2): 200 mV, 2.2 kohms Pre out (SUBWOOFER): 1 V, 2.2 kohms Phono Overload: 110 mV RMS at 1 kHz, 0.5% T.H.D. Frequency Response: 20 Hz to 100 kHz, +1/3 dB RIAA Deviation: 20 Hz to 20 kHz, 0.8 dB Tone Control Bass: 10 dB at 50 Hz Treble: 10 dB at 10 kHz Signal-to-Noise Ratio Phono: 80 dB (IHF-A, 5 mV input) CD/Tape: 100 dB (IHF-A) Capture Ratio: Image Rejection Ratio North American models: Other models: IF Rejection Ratio: Signal-to-Noise Ratio Mono: Stereo: Alternate Channel Attenuation: Selectivity: AM Suppression Ratio: Total Harmonic Distortion Mono: Stereo: Frequency Response: Stereo Separation: 2.0 dB 40 dB 85 dB 90 dB 76 dB 70 dB 55 dB 50 dB (DIN) 50 dB 0.2% 0.3% 30 Hz-15 kHz, 1.0 dB 45 dB at 1 kHz 30 dB at 100 Hz-10 kHz

AM Tuning Range North American models: 530-1,710 kHz (10 kHz steps) European & Australian models:522-1,611 kHz (9 kHz steps) Worldwide models: 531-1,602 kHz (9 kHz steps), 530-1,710 kHz (10 kHz steps) Usable Sensitivity: 30 V Image Rejection Ratio: 40 dB IF Rejection Ratio: 40 dB Signal-to-Noise Ratio: 40 dB Total Harmonic Distortion: 0.7%

GENERAL

Power Supply: AC 120 V, 60 Hz AC 230-240 V, 50 Hz AC 220-230 V and 120 V switchable, 50/60 Hz 3.4 A 260 W 339 mm 17-1/8 5-7/8 13-3/8
Power Consumption: Dimensions (W H D):

VIDEO SECTION

Input Sensitivity and Impedance VIDEO (DVD, VIDEO 1, 2): 1 Vp-p, 75 ohms S VIDEO (DVD, VIDEO 1, 2):1 Vp-p, 75 ohms (Y) 0.28 Vp-p, 75 ohms (C) Output Level and Impedance VIDEO (VIDEO 2, MONITOR):1 Vp-p, 75 ohms S VIDEO (MONITOR): 1 Vp-p, 75 ohms (Y) 0.28 Vp-p, 75 ohms (C)
Weight North American models: 9.7 kg, 21.4 lbs. European & Australian models:10.3 kg, 22.7 lbs. Worldwide models: 10.9 kg, 24.0 lbs.
Transmitter: Signal range: Power supply: Infrared Approx. 5 meters, 16 ft. Two AA batteries (1.5 V 2)

TUNER SECTION

FM Tuning Range: Usable Sensitivity Mono: Stereo: 50 dB Quieting Sensitivity Mono: Stereo: 87.5-108.0 MHz (50 kHz steps) 11.2 dBf, 1.0 V (75 ohms) 17.2 dBf, 2.0 V (75 ohms) 17.2 dBf, 2.0 V (75 ohms) 37.2 dBf, 2.0 V (75 ohms)
Specifications and features are subject to change without notice. Power supply and voltage vary depending on the area in which the unit is purchased.
Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN Tel: 072-831-8111 Fax: 072-833-5222 http://www.onkyo-intl.com ONKYO U.S.A. CORPORATION 18 Park Way, Upper Saddle River, N.J. 07458, U.S.A. Tel: 201-785-2600 Fax: 201-785-2650 http://www.onkyousa.com ONKYO EUROPE ELECTRONICS GmbH Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.onkyo.net ONKYO CHINA LIMITED Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung, N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039 http://www.onkyochina.com
HOMEPAGE http://www.onkyo.co.jp/

SN 29343037

W0103-1

TX- DS494

D IGITAL S URROUND H OME T HEATER R ECEIVER
Shown: North American model (Black only) Europe: Black/Silver Asia: Black/Gold
Offers the Ideal Balance of Sophistication, Functionality and Value
For movie fans who want a cost-efficient yet respectable home theater thats exceptionally easy to use, the TX-DS494 is one of the very best surround receivers you can buy. It not only offers maximum digital home-theater flexibility, but also sound and build quality that has no peer in this class. Whats more, in addition to S-video switching and heavy-duty speaker binding-post for all channels (extremely rare in this price range), the TX-DS494 features three assignable digital inputs, a 5.1-channel input to handle future needs, a frequency response out to 100 kHz to support DVD-Audio and Super-Audio CD playback, state-of-the-art 96 kHz/24-bit DACs for all channels, a powerful preprogrammed* remote, and Dolby Digital and DTS decoding.
Unmatched Ease of Use Compared to any other receiver in this class, the TX-DS494 is the most straightforward, easy-to-use home-theater centerpiece available today. Take speaker setup, for example. Well thought-out display graphics and menu prompts make it so simple and intuitive, even first-time home-theater users are amazed how easy it is. Another plus: unlike many receivers, there are direct-access source-input buttons on both the front panel and remoteso you dont have to cycle through a menu maze just to play your DVDs, CDs, videotapes and other sources. The remote, which is refreshingly straightforward, groups buttons of different shapes, sizes, and colors to vividly differentiate between functions. Its also preprogrammed* to control other manufacturers gear (TV cable, satellite, VCR, DVD)so you dont have to go through the annoying process of searching for and entering a number. Whats more, the receiver has automatic digital/analog signal detection and switching to take the guesswork out of what format to choose or input to useso you can just hit a button, sit back and enjoy the show.

*North American models

Dolby Pro Logic II This new surround-sound decoding process delivers Dolby Digital-like, quasi5.1-channel sound from stereo music recordings, and from stereo- and Dolby Surround-encoded movie soundtracks. It also provides significantly better channel separation than standard Dolby Pro Logic, and offers stereo surround channels, which is a big improvement over plain Pro Logics single, mono surround channel. Optimum Gain Volume Circuitry To produce volume at low levels, conventional volume-attenuation methods must initially drop a signal close to the noise floor. This often taints the signal with a small amount of noise, which becomes amplified when the signal is amplified. Onkyos Optimum Gain Volume Circuitry solves this problem by adjusting the gain so that less than half the typical amount of attenuation is needed. This ensures that the signal never comes close to the noise floor, and thereby eliminates the possibility of noise contamination that plagues conventional volume-attenuation designs. Designed to Handle Todays and Tomorrows High-Resolution Multichannel A/V Sources To accommodate the wide dynamic range of sources like DVD-Audio and Super Audio CD, the TX-DS494 delivers a stereo frequency response up to 100,000 Hz. The unit also features a 5.1-channel input, meaning its ready for new multichannel formats down the road.
Wide Range Amplifier Technology (WRAT) While WRAT was originally developed for our high-end amplifiers to handle the sonic demands of such high-resolution formats as DVD-Audio and Super-Audio CD, it also provides an improved dynamic S/N ratio and better delivery of momentary power peaks from all software, including regular CDs and DVDs. How? By: 1) Using an innovative low negative-feedback design that virtually eliminates the influence of counter-electromagnetic force from the speakers; 2) Eliminating ground-potential fluctuations that could adversely affect the signal; and 3) Delivering high instantaneous currentenough solid clean power to effortlessly drive even difficult low-impedance loadsjust whats needed to handle todays home-theater speaker systems. The result is movie-theater impact and sound purity that conventional receivers simply cannot match.

Amplifier Features

55 Watts minimum of continuous RMS power to each of the five channels into 8 from 20 Hz to 20 kHz with no more than 0.08% THD (North American models, FTC rated) 75 Watts minimum of continuous RMS power to each of the five channels into 6 at 1 kHz (European models, DIN) 100 Watts minimum to each of the five channels into 6 at 1 kHz (Asian models, JEITA) Wide Range Amplifier Technology (WRAT) Extended Frequency Response (20 Hz to 100 kHz) Full bandwidth power to all 5 main channels High-current, low-impedance 6-Ohm drive for all five channels Oversized electrolytic capacitors State-of-the-art linear PCM 96 kHz/24-bit DACs for all channels Fully discrete output stages for all five channels Optimum Gain Volume Circuitry Massive isolated transformer 2 Large high-grade extruded-aluminum heat sinks A/B speaker drive Tone control (bass, treble) for front L/R speakers Auto-protection circuitry

Extensive bass management circuitry 5.1-Channel input Automatic signal detection 3 Assignable digital inputs (2 coaxial, 1 optical) 3 S-video inputs and 1 output 3 A/V inputs 3 Audio inputs Phono input Dedicated line-level subwoofer pre out Full input/output cassette and VCR loops 7 Sets of heavy-duty multiway speaker binding posts (dual banana-plug compatible)
with a total 120 watts max (100 watts max for European/Asian models) Heavy-duty power cord Large non-resonant feet Heavy-gauge, anti-resonant, reinforcedsteel chassis Vibration-resistant cover Brushed aluminum front panel Powerful preprogrammed* remote
(*North American models only)

SPECIFICATIONS

AMPLIFIER SECTION

Power Output

North American Models Front Main L/R.. 55 W/ch min. RMS. (8 , 20 Hz-20 kHz, FTC, 0.08 % THD) Center.. 55 W min. RMS. (8 , 20 Hz-20 kHz, FTC, 0.08 % THD) Surround L/R.. 55 W/ch min. RMS. (8 , 20 Hz-20 kHz, FTC, 0.08 % THD) Front Main L/R.. 70 W/ch min. RMS. (6 , 1 kHz, FTC, 0.1 % THD) Center.. 70 W min. RMS. (6 , 1 kHz, FTC, 0.1 % THD) Surround L/R.. 70 W/ch min. RMS. (6 , 1 kHz, FTC, 0.1 % THD) European Models Front Main L/R.. 75 W/ch min. RMS. (6 , 1 kHz, DIN) Center.. 75 W/ch min. RMS. (6 , 1 kHz, DIN) Surround L/R.. 75 W/ch min. RMS. (6 , 1 kHz, DIN) Asian Models Front Main L/R.. 100 W/ch (6 , 1 kHz, JEITA) Center.. 100 W (6 , 1 kHz, JEITA) Surround L/R.. 100 W/ch (6 , 1 kHz, JEITA) Dynamic Power (front) (Calculated on basis of IHF dynamic headroom) 3 /4 /8 .. 140 W/ch / 110 W/ch / 75 W/ch Total Harmonic Distortion. 0.08 % at rated power/0.08% at 1 W output Frequency Response.. 20 Hz-100 kHz: + 1 dB, - 3 dB

FM/AM Tuner Features

Outstanding selectivity and sensitivity 30 FM/AM random presets FM auto tuning RDS (European models) with PS Red FM stereo indicator 75-Ohm antenna input FM indoor antenna supplied AM loop antenna supplied

Signal-to-Noise Ratio

Phono... 80 dB (IHF-A, 5 mV input) CD/TAPE... 100 dB (IHF-A)
Phono Overload.. 110 mV RMS. (1 kHz, 0.5 % THD) Damping Factor... 60 at 8 Input Sensitivity and Impedance
PHONO... 2.5 mV, 50 k LINE (CD, TAPE, DVD, VIDEO-1, 2).. 200 mV, 50 k DIGITAL-2 (COAXIAL).. 0.5 Vp-p, 75 DVD, VIDEO-1, 2... 1 Vp-p, 75 Rec out (TAPE, VIDEO-2).. 200 mV, 2.2 k Pre out (SUBWOOFER)... 1 V, 2.2 k VIDEO (VIDEO-2, MONI)... 1 Vp-p 75 BASS... 10 dB at 50 Hz TREBLE.... 10 dB at 20 kHz

Output Level and Impedance

Tone Control

Other Performance Features
Precision digital speed-sensitive volume control Absolute volume display Separate PC (printed circuit) boards for audio and video sources Large bright fluorescent display 2-Mode display dimmer (normal, low) Individual input selectors for each source Headphone jack (standard size) Audio mute (remote) Sleep timer (remote) Battery-free memory backup 2 Switched AC convenience outlets

TUNER SECTION

Usable Sensitivity
FM Mono.. 11.2 dBf, 1.0 V (75 IHF), 0.9V (75 DIN) FM Stereo.. 17.2 dBf, 2.0 V (75 IHF), 23 V (75 DIN) AM.. 30 V FM Mono... 76 dB, IHF FM Stereo... 70 dB, IHF AM... 40 dB

Audio/Video Features

Dolby Digital, DTS Dolby Pro Logic II , decoding All Channel stereo 7 DSP soundfields High Definition DSP Late night mode (on, off) Easy-set speaker configuration

Harmonic Distortion

FM Mono.... 0.2 % FM Stereo... 0.3 % AM... 0.7 % FM Stereo Separation. 45 dB at 1 kHz/30 dB at 100 Hz-10 kHz

GENERAL

Shown: North American model (Illustration)
10.3 kg/22.7 lbs. (European Models) 11.1 kg/24.5 lbs. (Asian Models)
NPR No. 01N03 12/00 Printed in Japan
Dimensions (W x H x D). 17-1/8 x 5-7/8 x 13-1/8 /435 x 150 x 333 mm Weight.. 21.4 lbs./9.7 kg (Noth American Models)
Due to a policy of continuous product improvement, Onkyo reserves the right to change specifications and appearance without notice. Dolby, Pro Logic and the double-D symbol are trademarks of Dolby Laboratories. DTS is a trademark of Digital Theater Systems, Inc.
ONKYO CORPORATION Sales & Product Planning Div.: 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN Tel: 072-831-8111 Fax: 072-833-5222 ONKYO U.S.A. CORPORATION 18 Park Way, Upper Saddle River, N.J. 07458, U.S.A. Tel: 201-785-2600 Fax: 201-785-2650 http://www.onkyousa.com ONKYO EUROPE ELECTRONICS GmbH Industriestrasse 20, 82110 Germering, GERMANY Tel: 089-849-320 Fax: 089-849-3226 http://www.onkyo.net ONKYO CHINA LIMITED Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung, N. T., HONG KONG, SAR of China Tel: 852-2429-3118 Fax: 852-2428-9039 http://www.onkyochina.com ONKYO INDIA PVT. LTD., No.1, Sriram Nagar, South Street, Alwarpet, Chennai 600 018, INDIA Tel: 91-44-467-2152/2304 (Telefax)