Question about NAD C320 2-Channel Amplifier

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NAD C740 no longer reproducing music through loudspeakers

Attempted to connect imac computer to NAD stereo (with RCA cable), in order to hear internet radio broadcast through my stereo system I tried plugging the RCA cable into each and every connection in the back, to see which one sounded the best. The connections I plugged into include: aux, phono, tape, and either pre out or main in. I think the problem started after plugging into the pre out or main in. I unplugged the RCA cable after hearing a faint pop. Now I can barely hear any sound out of my loudspeakers, unless I crank the volume to maximum. Even then, the music is extremely faint. However, I can hear the music perfectly when I listen through my headphones. Nice and loud... The small glass fuse inside receiver looks fine.

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What was your amp? ic or transistorized? the output transistor of your amp may be opened, mostly it will short but because u still hear sound, maybe open and only the driver transistor are working. replacing output transistor or IC could solve the problem.

Posted on May 20, 2007


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NAD C740 Chanel B Speakers not working The speaker output A is working properly, then the output B is completely silent. I install differents speakers and even the same speakers. no sound from the B...

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2. if it has the speaker switch(A, B, A+B) try toggling it, might also just loose contacts.
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Feb 03, 2011 | NAD C740 Receiver

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I run a sub and two sets of speakers on speaker B of my NAD C740 through a speaker selector. I think there has been a short circuit caused by the + and - wires touching. The left channel no longer works on...

Check that both left and right channels work on A speakers. If they do, the amplifier is probably good and your problem may be outside the amplifier. Try swapping the left and right speaker connections at the back of the amp to see if the problem changes from left to right. this would tell you if the problem is in the amp or out to the speakers. Hope this helps

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Sure you can. Download the songs in MP3 format (check here how to download music) and then double click the downloaded file. One of Bill's wonderful programs will open and play the song on the loudspeakers of your PC. I suppose you have connected some to the output jack of your soundcard. If you don't like the sound of your speakers, you can connect the PC to your stereo by using an adapter cable from audio jack 3.5 mm to 2xRCA.

Hope that helps

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