Question about NAD T760

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NAD T760 Speakers start to distort after about 5 minutes when playing a CD OR DVD. Also sometimes, no audio ---just distorted sound coming from speakers.

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4 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: buzzing emitted by vsx-409

Could be the result of having DTS compatible equipment connected through the analog inputs on the VSX-409D. Noise and distortion will result as essentially the DTS signal is being played back undecoded. If this is the case you'll have to connect your LD or CD player through the digital connections (coax or optical) and set 'Signal Select' (button on front) to 'Digital'.

Posted on Jan 07, 2008

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ziraffa
  • 827 Answers

SOURCE: NAD T760 remote control

You could buy a universal remote control and try the following NAD audio remote codes to program it with:
NAD
575 773 975

I read somewhere else that the 'Supplied Code for NAD receivers' was 033, but cannot confirm this. Try the first 3 first.

Universal remotes tend to be pretty cheap, certainly cheaper than buying one from NAD.

Good Luck

Chris (ziraffa)

Posted on Dec 20, 2008

dunnbiker
  • 8546 Answers

SOURCE: Center Speaker Audio Very Distorted

Love your screen name.

You didn't say what, if anything, preceded the appearance of the problem. There might be a clue.

Can you describe the distortion? Is it excessively bassy? If so, is it happening on all sources?

I'm assuming this is a modern digital receiver that is capable of many soundfield simulations as well as native Dolby Digital, DTS, multi-channel. If so we can use a stereo source and through simulation redirect some of it to the center speaker.

Using one of your receiver's many multi-channel simulation modes, put in a CD or tune an FM station and use it to diagnose the problem during later steps.

If it's only a single source and that source uses individual analog channel RCA cables, swap in another one or temporarily move the Center Channel feed to one of the other channels to see if it's before the receiver (in the source).or inside the receiver.

For multiple sources:

Is your Center speaker defined properly as Large or Small in the receiver's setup menu?The size refers mostly to the bass-handling capacities of all your speakers rather than their physical size. Speakers designated as 'Small' will not be sent much in the way of bass because they can't handle it well. The LFE/subwoofer channel(s) will get all the bass that was intended for them instead.

If you have a Small speaker improperly defined as Large it may be getting bass that it can't handle and that might sound like distortion. Having a Large speaker defiend as Small would result in less bass than expected but otherwise 'clean' sound.

Check the speaker setup in the menu for excessive volume level relative to the others. There is usually a calibration procedure the receiver will use to help you adjust the subjective voume of each speaker using white noise or tones.

Hope this helps.

Posted on Apr 02, 2009

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You are probably clipping in that midrange. Since the DVD player is fine and CD player is distorting: they are line level outputs, If you are running those through an equalizer- the equalizer should allow you add in a 10db attenuation.

If you are running them straight to the amp, The CD line level output should be about 1.5 volt peak to peak, it may be the line level input of your amp is only 1 volt and the DVD player simply has that level of output so does not clip..

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http://audio.manualsonline.com/manuals/mfg/panasonic/sc-pm193_1.html?idRes=699618

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