NAD T741 Manual
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FIG. 1 REAR PANEL CONNECTIONS
+12V TRIGGER OUT
FIG. 2 FRONT PANEL CONTROLS
FIG. 3 REMOTE CONTROL
REAR PANEL CONTROLS (FIGURE 1) 1. FM & AM ANTENNA AM ANTENNA - An AM loop antenna is supplied with the T741 and is required for AM reception. Open the clip terminal lever and insert the wire from the antenna. Closing the lever will lock the wire in place (Fig. 5). Test various positions for the antenna, but always ensure the loop is placed vertically for best reception. Placing the antenna close to large metal items such as metal shelves or radiators may interfere with reception. NOTE When reception is not satisfactory using the supplied AM loop antenna alone, connection of an external antenna is recommended. Do not connect anything other than a loop antenna to the AM ANTENNA terminal. Do not remove the AM loop antenna. The antenna cable to the loop antenna must not exceed 3 meters. FM ANTENNA - A ribbon wire FM antenna is included and should be connected to the FM connector at the rear of the unit (Fig. 4) using the balun adapter supplied. The ribbon aerial should be mounted on a vertical surface and placed so that it forms a T. Experiment with placement of the antenna to find the position that gives the best signal strength and lowest background noise. An inadequate FM signal normally results in high levels of hiss, especially in stereo, and interference from external electrical sources. In areas of poor FM reception, the tuner sections performance can be improved by using an externally mounted FM antenna. A qualified aerial installer will be able to advise and fit a recommended aerial for your reception conditions. 2. TAPE 1 & CD INPUT TAPE 1 - Connections for analogue recording and playback to an audio tape recorder of any type, such as a cassette, reel-reel, DAT, MD or DCC. Using twin RCA-to-RCA leads, connect to the left and right Audio Output of the tape machine to the TAPE 1 IN connectors for playback. Connect the left and right Audio Input of the tape machine to the TAPE 1 OUT connectors for recording.
CD INPUT - Input for CD player (analogue audio signal) or other line-level signal source. Use a twin RCA-to-RCA lead to connect the CD players left and right Audio Outputs to this input. 3. 5.1 CHANNEL INPUTS Inputs for the multi-channel audio signals from an external decoder, such as an MPEG decoder or a DVD player with integrated decoder. Use two twin RCA-to-RCA lead to connect the decoders front left and right Audio Outputs to the Front left and right inputs, and the decoders Surround left and right outputs to the Surround left and right inputs. Use a third twin RCA-to-RCA lead to connect the decoders subwoofer output to the Subwoofer input and the decoders Center channel output to the Center channel input. Make sure you to follow color coding of the plugs to ensure that both Center and Subwoofer are connected correctly, for instance, use the red plugs at either end to connect the center channel and the white plugs for the subwoofer channel.
6. AUDIO PRE-OUTS / SUBWOOFER OUT AUDIO PRE-OUTS - The NAD T741 receiver has five power amplifiers built-in to power all the speakers connected to it (Left, Right, Center, Left Surround, Right Surround). It is also possible to use the T741 as a preamplifier to drive external power amplifiers. This way, you use all the control functions the T741 provides, such as input select, surround mode, volume, tone controls, etc., but the external power amplifier actually powers the speaker connected to it instead of the T741s integrated power amplifier for that channel. Connect the RCA-to-RCA leads from the Front left and Right, Center, and/or Surround Left and Right Audio pre-out connectors to the external amplifiers. Connect speakers to the external amplifiers. NOTES Never connect the T741s speaker outputs and the speaker outputs of an external amplifier to the same speakers. When headphones are inserted the signals from all audio pre-out outputs will be muted. Before making any connections, check that the T741 and the power amplifiers it will be connected to are switched off. With volume turned down to a low level, switch power on only after all connections have been made. SUBWOOFER OUT - Unlike for the full range five channels as described above, there is no power amplifier built-in for an additional subwoofer. The Subwoofer pre-out allows for connection to a sub-bass speaker system with its own external or integrated power amplifier (active subwoofers). 7. MONITOR OUT Composite Video and S-Video outputs for connecting a TV or Video Monitor to view video sources connected to VIDEO 1 to VIDEO 5. Using a Video RCA-to-RCA lead, connect the Video Line In on the TV or monitor to the MONITOR OUT. Note that an S-Video signal will also be available as a Video Composite signal on Monitor out, if the corresponding source is selected. The composite video input signals (No. 4; yellow sockets) will also be available as S-Video signal on the Monitor Out socket. If you use both S-Video and Video composite sources, you will only need to connect the S-Video Monitor Out to the television or projector. 8. SPEAKERS: FRONT, CENTER & SURROUND SPEAKERS FRONT SPEAKERS - Connect the right speaker to the terminals marked FR ensuring that the red terminal is connected to the + terminal on your loudspeaker and the black terminal is connected to the loudspeakers - terminal. Connect the terminals marked FL to the left speaker in the same way. Always use heavy duty (16 gauge; 1.5mm or thicker) stranded wire to connect loudspeakers to your T741. Unscrew the speaker terminals plastic bushing. Insert the bare cable end into the hole of the terminal and then secure the cable by tightening down the terminals bushing (Fig. 6). To avoid any danger of bare metal from the speaker cables touching the back panel or another connector, ensure that there is only 1/2 (1.27cm) of bare cable and no loose strands of speaker wire.
FRONT PANEL CONTROLS (FIGURE 2) 1. POWER Press the POWER button to switch the receiver to STANDBY mode. Press any input selector button on the front panel or the POWER button (No. 1) on the Remote Control to switch the receiver fully on. The display will light up indicating which input was selected; the Stand-by indicator will extinguish. Pressing the POWER switch again will turn the unit OFF completely. The NAD T741 receiver uses a memory back-up system to store surround sound trim settings and Preset station information for the tuner section. This information is retained for several weeks, even the unit is switched off completely or unplugged. REMOTE CONTROL Power button - Press this button to switch the unit from operating to the Stand-by mode and vice versa. Press this button again to switch to unit on from Stand-by; the last selected source will be indicated in the display. NOTE Stand-by mode is indicated by the Stand-by indicator (No. 2) just over the green Power button on the front panel (No. 1). In Stand-by mode the T741 uses very little power. However, it is recommended that you switch the unit totally off if it is not going to be used for more than a couple of days. Switch off completely by pressing the Power button on the front panel (No. 1), all lights will extinguish. 2. STAND-BY INDICATOR This green LED will light up when the receiver is switched On, but in Stand-by mode. Refer to section 1 in this chapter for more information. 3. DISPLAY The T741s FM tuner supports RDS PS and RDS RT. With stations carrying RDS information, RDS will light up in the display panel, and the stations RDS name is automatically displayed (RDS PS). Some radio stations, which support RDS, also transmit additional information, known as Radio Text (RDS RT). To view this information, use the Display button. With stations carrying RDS information, the DISPLAY button scrolls between three different display modes, each successive push of the button engages the next one of the three modes: a) In the default mode, the stations RDS name is displayed, Program Service (PS; normally the stations calling letters, BBC R3, for instance). b) From the default mode, press the button once to view Radio Text (RT). This can be additional information such as the presenters or programs name; what song is playing, etc. This text scrolls continuously over the 8 alphanumeric display segments. It takes a few seconds for the tuner to gather the RT information, so immediately after tuning to a station and selecting to view RT the display will indicate NO TEXT and default to the station name. If no RT information is available, the display will also show NO TEXT for three seconds before reverting to the default mode. c) Press the button from the display RT mode to display the station frequency. Press again to return to the default mode (a). When the DISPLAY button is pressed when tuned to a non-RDS station the display will show NO NAME for three seconds before reverting to the default display.
The control is also used to adjust various set-up settings and levels for the T741. In conjunction with the SETUP button (No. 17) the speakers size and delay can be adjusted; in conjunction with the Tone Control button (No. 18) the Bass and Treble levels can be adjusted. Refer also to sections SETUP and Tone controls in this chapter. 11. HEADPHONE SOCKET & VIDEO 5 INPUT HEADPHONE SOCKET - A 1/4 stereo jack socket is supplied for headphone listening and will work with conventional headphones of any impedance. The volume and tone controls are operative for headphone listening. Use a suitable adapter to connect headphones with other types of connectors such as 3.5mm stereo personal stereo jack plugs. Inserting a headphone will automatically turn off all speakers and signals from the Audio Pre-Out sockets and switches the T741 to the stereo mode. Surround sound modes are not available when headphones are inserted in the headphone socket. The sound from the EXT. 5.1 CH input is not available on the headphones socket. NOTES In the VFL display Speaker settings, be sure to have selected and adjusted a preset with MAIN SPEAKERS set to LARGE. If set to SMALL, bass response will be limited. Listening at high levels can damage your hearing. VIDEO 5 INPUT - For easy and temporary connection you can connect a camcorder (playback only) or video game console. If the game console or camcorder is mono, connect the audio lead to the R (Right) audio socket. 12. AUDIO & VIDEO INPUT SELECTORS VIDEO 1 - Video 1 selects the signal from a TV/Satellite/Cable receiver or DVD player connected to VIDEO 1 as the active input. VIDEO-1 is shown in the Display Panel when selected. The Digital Input 1 is linked to the Video 1 input (marked Digital In 1 on back panel; No. 6). Digital Input 1 allows for connection of a digital source with an Optical (Toslink) digital output. Whenever the corresponding digital input is activated, Digital Input 1 will also be selected; in the display the DIGITAL 1 indicator will start to blink. If a digital audio signal is detected, the DIGITAL 1 indicator will stop blinking and remain lit. If no digital audio signal is detected, DIGITAL 1 indicator will cease blinking and extinguish. VIDEO 2 - Video 2 selects the signal from a TV/Satellite/Cable receiver or DVD player connected to VIDEO 2 as the active input. VIDEO-2 is shown in the Display Panel when selected. The Digital Input 2 is linked to the Video 2 Input (marked Digital In 2 on back panel; No. 5). Digital Input 2 allows for connection of a digital source with an coaxial (RCA Jack) digital output. Whenever the corresponding digital input is activated, Digital Input 2 will also be selected; in the display the DIGITAL 2 indicator will start to blink. If a digital audio signal is detected, the DIGITAL 2 indicator will stop blinking and remain lit. If no digital audio signal is detected, DIGITAL 2 indicator will cease blinking and extinguish.
VIDEO 3 & VIDEO 4 - Video 3 & 4 select the signal from a TV/Satellite/Cable receiver, DVD player or VCR connected to VIDEO 3 or VIDEO 4 as the active input. VIDEO-3 or VIDEO-4 is shown in the Display Panel when selected. The Video 3 & 4 inputs also have video and analogue audio outputs specifically for recording video devices. The Digital Input 3 is linked to the Video 3 input (marked Digital In on back panel; No. 5). Digital Input 3 allows for connection of a digital source with a Coaxial (RCA Jack) digital output. Whenever the corresponding digital input is activated, Digital Input 3 will also be selected; in the display the DIGITAL 3 indicator will start to blink. If a digital audio signal is detected, the DIGITAL 3 indicator will stop blinking and remain lit. If no digital audio signal is detected, DIGITAL 3 indicator will cease blinking and extinguish. VIDEO OUTPUT - The video signal available on the S-Video and Video Composite outputs is dependent on the selected video input (VIDEO-1, VIDEO-2, VIDEO-3, VIDEO-4, VIDEO-5). However, when one of the audio-only sources is selected (FM, AM, CD, Tape Monitor or Ext. 5.1) the last selected video signal from one of the video inputs will be present on these outputs. This way you can watch a DVD player or video whilst listening to the CD player. The display indicates which video signal is routed to the MONITOR OUT sockets (No. 7 on back panel). 13. CD Selects the CD as the active input. 14. TAPE MONITOR Selects the output from a tape recorder when playing back tapes or monitoring recordings being made through the Tape sockets. Press the TAPE MONITOR button once to select it and again to return to the normal input selection. The Tape Monitor function does not override the current input selection. For example, if the CD is the active input when Tape Monitor is selected, the CD signal will continue to be selected and is sent to the Tape Out, Video 3 and Video 4 Out sockets. But it is the sound from recorder connected to Tape that will be heard on the loudspeakers when the TAPE MONITOR function is selected. When Tape Monitor is selected, TAPE MONITOR will remain lit until Tape Monitor is disengaged again. 15. EXT. 5.1 Selects the multi-channel output signal from the DVD player or external decoder source (such as MPEG, for instance) connected to the 5.1 Ch. Input as the active input. The 5.1 Input is a direct pass through with only the volume control in the circuit. Bass management settings and tone controls are not available on this input. NOTE No Ext. 5.1 audio signal is available from headphones socket, the Tape, Video 3 and Video 4 out-puts when the Ext. 5.1. input has been selected.
16. SURROUND MODE With the Surround Mode buttons the available surround sound modes can be selected. The selected Surround mode is permanently indicated in the display Area. The Surround Mode buttons scroll through the available surround sound modes: With any of the Digital Inputs 1, 2 & 3 (press Video 1, 2 or 3 respectively to select), the T741 automatically recognizes if the selected source carries a Dolby Digital or DTS signal. When no Dolby Digital or DTS signal is available, the Surround Mode buttons scrolls through the other available surround sound modes: Stereo Pro Logic Ears Stereo, etc. With either Dolby Digital or DTS surround mode engaged, the Dolby Pro Logic and Ears surround modes cannot be selected. Dolby Digital and DTS has six independent channels available in total: Left, Center, Right, Surround left, Surround Right and an Effects Channel (Subwoofer). The Dolby Digital signal allows for several channel configurations. DTS digital surround is an Encode/Decode system that currently delivers six discrete channels (5.1) of Master-Quality up to 24-bit audio. Dolby Pro Logic decodes the center and surround sound signals embedded in stereo movie sound tracks from e.g. video, Laser Disc or TV. To decode correctly, the source must be a Dolby Surround or Dolby Stereo soundtrack. In the EARS (Enhanced Ambiance Retrieval System) Surround Mode, a realistic level of ambience of surround sound is added to a normal stereo source such as a CD or FM radio. NOTES Dolby Digital or DTS are only available as a Surround Mode if the source is either Dolby Digital or DTS and a Digital Audio input is used. An external source such as a decoder or DVD player with a decoder built-in (MPEG for instance) can be connected to the 5.1Ch input (No. 3 on the rear panel). When the EXT 5.1 CH. input is selected, no other surround modes are available. To obtain the best performance possible it is important that the system and all speakers have been set up correctly.
17. SET UP This button is used to configure the T741 to match with the specific speakers in your system. This setup procedure should be done when you first install your system, and subsequently when new or different speakers are attached, or when the speaker positions are changed. The SET UP facility uses a menu system that is 3 layers deep to accomplish the speaker setup. The Front Panel display will give you feedback on where you are in the menu system at any given moment. By first pressing the SET UP button and then turning the VOLUME/SETUP knob all menu items can be accessed. SET UP OPTIONS (Layer 1) SPK SET (Layer 2) MAIN (Layer 3) (Layer 3) (Layer 2) CEN (Layer 3) (Layer 3) (Layer 3) (Layer 2) REAR (Layer 3) (Layer 3) (Layer 3) (Layer 2) SUB (Layer 3) (Layer 3) (Layer 2) EXIT (Layer 1) DELAY (Layer 2) CEN (Layer 3) (Layer 2) REAR (Layer 3) (Layer 2) EXIT (Layer 1) EXIT
LAR SMA LAR SMA OFF LAR SMA OFF ON OFF
0mS (Time in mS) 0mS (Time in mS)
To access the SET UP menu, press SET UP button to go to Layer 1, SPK SET. Use VOLUME/SET UP knob to change selection at Layer 1. Press SET UP button to enter Layer 2. Use VOLUME/SET UP knob to change selection at Layer 2. Press SET UP button to enter Layer 3. Use VOLUME/SET UP knob to change selection at Layer 3. While at Layer 3, press SET UP button to exit Layer 3 and go back to Layer 2. While at Layer 2 or Layer 1, selecting Exit then pressing SET UP will go back one level up. After a 5 sec default time, if no adjustment is made, the T741 will automatically exit the set up mode and return to the last selected input. Refer to section SETTING UP A SURROUND SYSTEM below for more detailed information on making these adjustments. 18. TONE CONTROLS This button is used to adjust Bass and Treble response to suit personal taste, or to compensate for less than optimal program sources. Each press of the TONE CONTROLS button cycles through BASS TREB and back to the previously selected input. Adjustment of Bass and Treble response is accomplished by turning the VOLUME/SET UP knob. Adjustment can be made in 2 dB increments up to +/- 10 dB. After a 5 sec default time, if no adjustment is made, the T741 will automatically exit the TONE CONTROLS mode and return to the last selected input.
STORING AND RECALLING PRESETS TO STORE A PRESET Tune to the radio station you wish to enter into a Preset (refer to chapter Front Panel Controls; section 8). If the station is transmitting RDS information, the RDS indicator will light up and station initials will be shown in the Display Panel. If a non-RDS station is found, then just the frequency will be shown. To store that station as a Preset, press MEMORY (No. 6). MEMORY and the preset section in the display panel will start to flash. If no other button is pressed within 10 seconds, MEMORY will stop to flash and the receiver will default to its previous state. Press either the (down) or (up) button to select which Preset number you wish to assign to the station (from 1 to 30 on FM and 1 to 10 on AM), shown as a flashing number in the Display Panel, and then press MEMORY (No. 6) again. The Memory light in the Display Panel will go out and the station is now stored in your NAD T741s memory. To exit the Memory mode without storing a station, leave all the tuner controls untouched; the Memory mode will automatically cancel itself after 10 seconds. The Memory Presets have a memory back-up, so they will remain stored for several weeks even if the Receiver is switched off or unplugged from the mains supply. NOTE You can enter a new station into an unused Preset or over-write an existing programmed Memory Preset. By doing this you will replace the radio station previously held on that Preset number. RECALLING A PRESET STATION To select a Preset station: Select the Preset mode by pressing the PRESET/TUNE button (No. 7) until PRESET lights up in the display. Press either the (down) or (up) button (No. 8) until the right Preset is found and shown in the Display Panel. NOTE Any unused Presets will be skipped. To Directly Access a Preset Station from the Remote Control: Press the numeric key on the Remote Control (AVR-1) the Preset number selected flashes in the Front Panel display window for 2 secs allowing for a valid second key entry for presets 10 and above.
DELETING A STORED PRESET You can empty a Preset by deleting the stored information: Press MEMORY button (No. 6). Press DOWN/UP buttons (No. 8) to select the preset number to be deleted. Press the FM MUTE/MODE button (No. 5). The Preset will then be deleted and appears as the Preset number. You can also store a new station into a used Preset, by simply going through the Preset storing process and placing a new station over the existing one.
REMOTE CONTROL AVR-1 (FIGURE 3.) The T741 is supplied with the NAD AVR-1 Remote Control. Apart from all the primary operating functions, the AVR-1 Remote Control handset also gives access to functions not available on the front panel of the T741. It also has additional controls to remotely operate NAD T550, L55, T531 and T571 DVD Players. The function of the buttons will change between the T741 Receiver and the NAD DVD Player depending on the position of the RCVR/DVD switch (See 25 below). Shared buttons (buttons that function with the switch in either position) have the receiver function printed on the button itself, with the secondary DVD function printed on the body of the remote handset Alkaline batteries are recommended for maximum operating life. Two AAA (R 03) batteries should be fitted in the battery compartment at the rear of the Remote Control handset. When replacing batteries, check that they have been put in the right way round, as indicated on the base of the battery compartment. It will operate up to a distance of 16ft (5m). 1. POWER Press this button to switch the unit from operating mode to the Standby mode and vice versa: Press this button again to switch the unit on from Stand-by; the last selected source will be indicated in the display. 2. SLEEP Press SLEEP to make the T741 automatically switch off after a preset number of minutes. Pressing the SLEEP button once will set the sleep time to 90 minutes, after which the T741 will automatically switch off into Standby mode. Sleep mode is shown on the Display Panel. To adjust the Sleep Delay, press the SLEEP button, each consecutive press will reduce the sleep time in 30-minute increments, as shown in the Display Panel. To cancel the Sleep mode, continue pressing the SLEEP button until the sleep time returns to 0 minutes. Pressing the POWER on the front panel (No.1) or POWER button on the remote control (No. 1) will also cancel the Sleep mode. 3. INPUT SELECTION The EXT 5.1, VIDEO 1 TO 5, TAPE MON, FM/AM and CD Input selector buttons perform the same function as those on the front panel of the T741.
13. TUNE MODE / RETURN The TUNE MODE button functions the same as the button of the front panel of the T741, switching between the Tune Mode and the Preset Mode. See complete description in the FRONT PANEL CONTROLS section above. In DVD mode this buttons function is determined by the individual DVD disc title being played. Refer to the NAD DVD Player Owners Manual for more detailed information on this function. 14. OPEN / CLOSE Opens or closes the loading tray of the DVD player. 15. STOP Stops play of the DVD player. 16. PLAY Commences playback of DVD or CD discs loaded in the DVD player. 17. PAUSE / STEP With CD discs this button pauses playback. With DVD video discs this button places the player in the still picture mode, and each successive press of the button advances (STEPs) the picture by one frame. Press the PLAY button to return to normal playback. 18. SKIP / SKIP This button advances or moves back a chapter (DVD) or track (CD) each time the button is pressed. 19. REPEAT Repeats a program or an entire DVD or CD disc. 20. SCAN / SCAN This button scans fast forward or back with DVD or CD discs. Each time the button is pressed the speed of scanning is increased. Press PLAY to return to normal playback.
27. DVD1 / DVD2 SWITCH This switch is located inside the battery compartment of the AVR-1, and changes the DVD functions between DVD1 (codes for T550 and L55 DVD Players) and DVD2 (codes for T531 and T571 DVD Players). SETTING UP THE SURROUND SYSTEM To obtain the best results in any of the Surround Modes it is important that the T741 is carefully set up. The Dolby Surround system requires that you specify the parameters of your speaker setup so it can properly direct the decoded surround sound signal in the correct proportion to create the most accurate theatrical effect. Dolby also allows for the redirection of bass frequencies to the most appropriate speaker(s). This is also known as bass management. The setup procedure is broken down in three sections: 1 Speaker Settings (by Front Panel controls) 2 Channel Delays (by Front Panel controls) 3 Level Settings for correct Channel Balance (by Remote Control handset) SPEAKER SETTING OPTIONS
SPK SET MAIN CENT REAR SUB EXIT LAR or SMA LAR, SMA, OFF LAR, SMA, OFF ON, OFF DELAY CEN REAR EXIT (0-5 mS ) (5-30 mS )
TO ACCESS THE SPEAKER AND DELAY SETTING ADJUSTMENTS Pressing the front panel SET UP button (first press) the display will show SPK SET. Rotating the VOLUME/SETUP knob alternately cycles the setting between SPK SET, DELAY , EXIT, and then wraps back to SPK SET. Speaker Settings - First you need to indicate which speakers are connected to your T741. Besides the Main speakers (Left & Right), these can include a Center, two Surround Speakers and a Subwoofer. To Adjust Speaker Settings - When Front Panel Display shows SPK SET, pressing the SET UP button on front panel again (second press) will enter the SPEAKER SETTING menu. Rotate VOLUME/SETUP knob to cycle between MAIN CEN REAR SUB EXIT First stop at MAIN and display shows LAR (current setting for FRONT or MAIN speakers). Press the SET UP button again to change the size. Each press of the SET UP button will change the setting for that speaker: MAIN (Front Speakers) can be selected as LRG or SML Now rotate the VOLUME/SETUP knob until CEN LAR (current setting for the CENTER speaker) appears in the display window. Press the SET UP button again to change the size. Each press of the SET UP button will change the setting for that speaker: CEN (Center Speaker) can be selected as LAR, SMA or OFF.
21. PROGRAM This button is used to create playback programs on CD discs. 22. AUDIO This button changes the audio soundtrack language on DVD video discs that support this feature. 23. SUBTITLE This button changes the subtitle language on DVD video discs that support this feature. 24. CLEAR This button is used to defeat or clear repeat play programs. 25. RECEIVER/DVD SWITCH This switch changes the function of the keys on the remote from the T741 RECEIVER commands to the DVD Player commands. This remote includes the codes for use with NAD T531, T571, T550, and L55 DVD Players only. 26. ZOOM The ZOOM function allows you to enlarge a selected portion of the video image (close up).
Now rotate the VOLUME/SETUP knob until REAR LAR (current setting for the SURROUND speakers) appears in the display window. Press the SET UP button again to change the size. Each press of the SET UP button will change the setting for that speaker: REAR (Surround Speakers) can be set to LAR, SMA or OFF. Now rotate the VOLUME/SETUP knob until SUB ON (current setting for the Subwoofer) appears in the display window. Press the SET UP button again to change the setting. Each press of the SET UP button will change the setting for that speaker: SUB (subwoofer) can be set to ON, OFF. Now rotate the VOLUME/SETUP knob until EXIT appears in the display window. Press the SET UP button again to exit SPEAKER SETTING MENU. Press the SET UP button again to exit the SET UP MENU. Your speaker settings are now complete. If in the future you add or change speakers, this setup procedure should be repeated. TIPS ON WHICH SPEAKER SETTINGS TO USE The four modes available to the T741s setup are: LARGE or SMALL and ON or OFF. The LARGE mode is used when the speaker is full range and capable of reproducing the entire audible frequency spectrum 20Hz to 20kHz. The SMALL mode is used when the speaker is not capable of reproducing the deepest bass portion of the audio frequency 20Hz to 100Hz. The ON mode is used when the speaker is active and receives the audio information intended. The OFF mode is used when the speaker is inactive. Audio signals intended for speakers set to the OFF position are redirected to the main speakers. Using a separate center channel speaker will allow the dialogue to cut through even the biggest sound effects and musical scores. Having the sound spread across three front speakers also stabilizes the stereo image, making the usable listening area much bigger. For best results, you should consider using a center speaker. Ideally it should be the same type as the left and right speakers. Installing surround speakers will greatly enhance the surround experience as these add considerably to the overall ambience. Dolby Pro Logic encoded material is deliberately limited in dynamic range and frequency bandwidth for the surround channel and thus only requires speakers of far lesser specification compared to the front channels. Dolby Digital however is a full range system, with two independent surround channels and with dynamics equal to that of the front channels. For this reason it is advisable to choose loudspeakers which are similar in power handling and performance capability to those of the front channels. For best results, the Surround loudspeakers should not beam the sound directly at the listener. One way of achieving this is to use dipole Surround speakers which aim the sound down the walls rather than directly into the room.
TIPS FOR SETTING DELAY Measure the distance from the listening position to the center speaker (dC) and to one of the front speakers (dFL or dFR). Subtract the center channel distance from the front L or R channel distance. For example, if the front speakers are 12 feet (3.7 m) from the listening position and the center speaker is 10 feet (3.0 m), the difference is 2 feet (0.6 m). For this example the center channel delay is set to 2 milliseconds or ms. The T741 can delay the center channel output up to 5 milliseconds and thus compensates for center channel speakers that are up to 5 feet (1.5m) closer to the listening position than the front left and right speakers. NOTES In rare system setups, the center channel speaker is actually further away than the front left and right speakers. In these cases, set the center channel delay to 0mS. The center channel delay time adjustment is only available in Dolby Digital surround mode. Measure the distance from the listening position to either the left or right rear speaker (dLS or dRS). Subtract the rear speaker distance from the front speaker distance (dFL or dFR). The resulting distance is equivalent to the delay in milliseconds for the rear delay setting. For example, if your rear speaker distance is 6 feet (1.8 m) and the front distance is 12 feet (3.7 m), the correct rear channel delay setting is 6 milliseconds. Again, set the rear channel delay to 0mS if the rear channels are further from the listening position than the front speakers. In Dolby Digital surround mode, the rear channel delay time can be set from 0ms to 15ms with 1ms increments. In Dolby Pro logic surround mode, the rear channel delay time can be set from 15ms to 30ms and 1ms per step. In DTS surround mode, the channel delay time cannot be adjusted. LEVEL SETTING (CHANNEL BALANCE) The output levels of each of the speakers connected to the T741 may need to be adjusted so that there is an even balance of sound from all the speakers in the system. If, for instance, the relative volume level to the Left and Right speakers and the center speaker is set too low, most of dialogue may be difficult to follow. If, on the other hand it is set too loud, the over-all balance will sound unnatural. To adjust the channel balance, the T741 is equipped with a TEST button (No. 7) on the Remote Control to help assess the loudness levels of each speaker. Before adjusting the channel balance level, make sure the master volume is turned down to a normal listening level. Pressing the TEST button engages the Test signal generator to allow for adjustment of all speaker levels, so that each channel can be adjusted for equal loudness at your listening position. The test signal scrolls automatically with 2 second intervals from Left, Center, Right, Rear Right, Rear Left, to sub-woofer in continuous cycles. If an adjustment in set-ting is made for one of the speakers, scrolling will stop until 2 seconds after the adjustment was made. The display panel shows which speaker is being fed with the test signal. Use the VOLUME +/- buttons on the Remote Control to respectively increase or decrease the level for the current speaker. NOTE There is no output in the Subwoofer during noise sequencer operation; therefore it is difficult to adjust the level in test mode. The Subwoofer level can be adjusted in the setup menu with musical input.
The Channel Balance for each speaker can be adjusted in 1dB increments. Continue to calibrate the level for each speaker until equal loudness is achieved at your listening position. A more accurate adjustment can be made using a sound level meter, if available. Set the meter to Slow and C-weighted modes and re-check the settings with the meter placed in several different positions in the general listening area. Press the TEST button again to leave or cancel the Test mode, any changes will be memorized automatically. Select the channel for which you wish to adjust and set the level so that it matches the other speakers. For best results it is best to start with the Left channel set at 0dB and to match the other speakers to it. Normally, if the Right speaker is located at the same distance from the listening position to the Left speaker it should be set at the same level as the Left speaker. NOTE If no level adjustments were made, press TEST again to return to the selected source. Any changes in the Channel Balance Setting, under the test mode, will be memorized automatically. The Delay time for the Surround speakers also needs to be correctly set for your normal listening position. Refer to the section Channel Delay in this chapter for more information.
NO SOUND NO SOUND ON ONE CHANNEL NO SOUND ON CENTER CHANNEL
Power AC lead unplugged or power not switched on Tape Monitor selected Mute on Speaker not properly connected or damaged. Input lead disconnected or damaged In Setup OFF for surround speaker selected No surround mode selected Mono sound source Speakers not properly connected Surround volume level too low In Setup OFF for center speaker selected Speaker not connected properly Center volume level set too low Source not connected using digital inputs
Check if AC lead is plugged in and power switched on De-select Tape Monitor mode Switch off Mute Check connections and speakers Check leads and connections Select appropriate Surround mode (large or small) Select a Surround Mode Test system with Stereo or Dolby Surround material Check speakers and connections Increase surround volume level Select appropriate Center mode (large or small) Check speaker and connection Increase center volume level Connect digital output of source to T741
NO SOUND ON SURROUND CHANNELS
DOLBY DIGITAL OR DTS AUTO-DETECTION FUNCTION DOES NOT WORK WEAK BASS/ DIFFUSE STEREO IMAGE REMOTE CONTROL HANDSET NOT WORKING
Speakers wired out of phase Batteries flat, or incorrectly inserted IR transmitter or receiver windows obstructed IR receiver in direct sun or very bright ambient light Antenna leads incorrectly connected Station not selected or weak signal with FM Mute on. Weak signal Multi-path signals or interference from another station Interference from other electrical sources computers, games consoles Interference from fluorescent lighting or electrical motors Station signal too weak. Station not transmitting RDS data
Check connections to all speakers in the system Check or replace batteries Remove obstruction Place unit away from direct sun, reduce amount of ambient light Check antenna connections to receiver Re-tune or switch off FM Mute Check station tuning. Adjust or replace antenna. Check station tuning. Adjust or replace antenna Check station tuning. Switch off or move the source of the electrical noise Check station tuning. Adjust or replace AM antenna Check station tuning. Adjust or replace antenna No remedy
NO SOUND WITH TUNER
NOISE, HISS ON AM AND FM DISTORTION ON FM WHISTLES OR BUZZES ON FM & AM WHISTLES OR BUZZES ON AM NO RDS NAME (PS)
2001 NAD ELECTRONICS INTERNATIONAL
All rights reserved. No part of this publication may be reproduced, stored or transmitted in any form without the written permission of NAD Electronics International
T741 Manual 10/01 Printed in Malaysia
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