NAD T742 owner manual Audio PRE-OUTS / Subwoofer OUT, Monitor OUT, Soft Clipping

6. AUDIO PRE-OUTS / SUBWOOFER OUT

AUDIO PRE-OUTS - The NAD T742 receiver has five power amplifiers built-in to power all the speakers connected to it (Left, Right, Centre, Left Surround, Right Surround). It is also possible to use the T742 as a pre- amplifier to drive external power amplifiers. This way, you use all the control functions the T742 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 T742’s integrated power amplifier for that channel.

Connect the RCA-to-RCA leads from the Front left and Right, Centre, and/or Surround Left and Right Audio pre-out connectors to the external amplifiers. Connect speakers to the external amplifiers.

NOTES

•Never connect the T742’s 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 T742 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 DVD to VIDEO 5. Usi

ideo RCA-to-RCA lead, connect the “Video Line In” on the TV orV 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 loudspeaker’s ‘-’ 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 T742. Unscrew the speaker terminal’s plastic bushing. Insert the bare cable end into the hole of the terminal and then secure the cable by tightening down the terminal’s 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.

NOTE

This unit is designed to produce optimum sound quality when speakers with impedance within the set’s ranges are connected. Please check the following information and choose speakers with the correct impedance for the connections.

FRONT SPEAKERS A: 8 ohms min. per speaker;

CENTER SPEAKER B: 8 ohms min.

SURROUND SPEAKERS: 8 ohms min. per speaker

CENTER SPEAKER - The terminal marked ‘C’ connects to the centre loudspeaker that is used when the T742 is operated in Dolby* Digital, DTS, Dolby Pro Logic, EARS surround sound mode or with the 5.1 Ch. input selected.

Connect the centre speaker in the same way as described with front speakers above.

SURROUND SPEAKERS - This connects the Surround loudspeakers that are used when the T742 is operated in Dolby Digital, DTS, Dolby Pro Logic, EARS Surround sound modes or with the 5.1 Ch. input selected.

Connect the surround speakers in the same way as described with FRONT SPEAKERS above; connect the left surround speaker to the set of terminals marked ‘SL’ and the right surround speaker to the terminals marked ‘SR’.

NOTE

The Centre and/or Surround speakers must be selected as Large or Small in the Set-up menu “SPK SET” when speakers are connected to these outputs.

9. SOFT CLIPPING

When any amplifier is driven beyond it’s power output capabilities, a hard, distorted sound can be heard on very loud sounds. This is caused by the amplifier cutting off or ‘hard clipping’ the peaks of sound that it was not designed to reproduce. The NAD Soft Clipping circuit gently limits the output of the system to minimize audible distortion if the amplifier is overdriven.

If your listening involves moderate power levels you may leave the Soft Clipping switch off. If you are likely to play at high levels that exceed the amplifier’s power capability, then switch Soft Clipping on.

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