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Set subwoofer How do I attach a subwoofer to my Nad c740?

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Using two equalizers on two sets of Bose 901's


As I have figured from your question you are trying to independently control levels for two sets of Bose speakers attached to your NAD amplifier. The problem lies in that the amplifier can only read one signal at a time, so in theory it will only accept a signal from one equalizer and output it to speakers attached to A and/or B terminals. In order to process different eq settings to two seperate pairs of speakers you will need to use two amplifiers, or an amplifier with built in channel controls for speaker set A and speaker set B.

Feb 21, 2008 | Bose 901 VI Main / Stereo Speaker

1 Answer

How do I connect a Mirage Omni s-10 Sub Woofer and a Parasound Model 2100 Pre Amp to the NAD C372 Amplifier?


You DO realize the preamp is duplicating stuff in the Nad C372, right? This Preamps adds nothing but PHONO connectivity and control. That's why they're called "preamps".



Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/NAD-C372-Amps-manual/id/8043dj592/t/2/

http://www.retrevo.com/support/Mirage-OMNI-S10-Subwoofers-manual/id/14438ag918/t/2/


Model 2100 Picture and article:

Use the Sub Out pair on the Preamp (joined by an RCA Y-cable) for the Sub Input on the sub (duh):

http://www.hometheaterhifi.com/preamplifiers/362-a-secrets-preamplifier-and-power-amplifier-review.html?showall=1

Run RCA from the Preamp Main Out to the C372 Aux In to hear any sources attached to the preamp.

Or, if you don't NEED the preamp because you don't have a turntable,ditch the preamp and connect the sub using the speaker outputs on the NADS, according to the manual.

Mar 08, 2011 | NAD C372 Amplifier

1 Answer

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...


possibly the causes are: 1. defective channel B power amp board. But try operating first with the built in tuner, if it's ok the RCA cable from your other sources(DVD player, etc...) might have broken internal conductor.
2. if it has the speaker switch(A, B, A+B) try toggling it, might also just loose contacts.
if the trouble is #1, leave everything to your trusted qualified technician, he knows what to do, unless you want to tweak/repair it by yourself...hope this helps ;-)

Feb 03, 2011 | NAD C740 Receiver

1 Answer

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

Jan 04, 2011 | NAD C740 Receiver

1 Answer

NAD C320 system sounds like a cheap, tinny tranny


Let's distill this down to its simplist configuration. FM source, stereo.

BTW, a search for NAD 440 only brings up a C440 >>>Tuner<<, no receivers. Are you sure about that model number? The only receiver model numbers with x40 on the NAD website are the C340 and C740, neither of which has a link to a manual (go figure). I have the C740 manual, so I'll use it for a loose reference.

If it still does what you're describing in a basic configuration and the volume control seems to affect it like you belatedly mentioned, I'd suspect a noisy volume control or some other control in the receiver (like a rarely used Tape Monitor switch) that is always there in the circuit but may have oxidized contacts and responds sometimes to burn-through.

Set the volume at a medium setting and repeatedly operate every switch, knob and button (one at a time) to gauge its effects on the sound. You may find one is the culprit. Then it's a matter of accessing it for a shot of contact cleaner.

If you have jumpers between Pre Out and Main In, it might be a good idea to reseat them, too.

Mar 23, 2010 | Audio Players & Recorders

2 Answers

Cannot get the sub woofer to work.


Now tell the NAD you have a subwoofer. Page 15, Figure 13, etc. and Page 18 - 19.

Mar 05, 2010 | NAD T770 Receiver

1 Answer

No signal from sub connected to NAD T760 in test mode.


Try using front pre out to the sub from the receiver. the crossover is in the sub anyway. If this works change your settings on the receiver and test again. If sub is still inop, could be an internal issue with the sub amp. Does your sub amp have an on/auto/off switch or light? check that as well. Hope this helps, if you need further assistance, send a reply and I'll help some more

May 24, 2009 | NAD T760

1 Answer

NAD C740 no longer reproducing music through loudspeakers


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.

May 14, 2007 | NAD C320 2-Channel Amplifier

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