Question about NAD T751 Receiver

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I have a NAD T 751 and volume of channel 1 and 2 differ substantially. Have DSTV connected on channel 1 and when I switch to DVD Player, the volume blows me away if I forget to turn down volume before switching. I have alternated the channels, but the problem obviously lies with the differing output levels of DSTV and DVD. How can I adjust the channels internally to balance the volume levels please?

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  • Dave Mar 14, 2011

    This sounds like a better solution. Will you supply full details please?

  • Dave Mar 15, 2011

    Currently I use a normal RCA audio and video connection, but will most probably buy a new Samsung Blue Ray player over the week end. This uses HDMI plug and I will probably switch to a coaxial connection to get digital audio into my NAD digital input no 2.

  • Dave Mar 18, 2011

    Thanks, will one of those small variable resisters also work?

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  • Master
  • 1,961 Answers

Hello!
There is nothing to adjust internally on your receiver... I'm sorry to say that!
However, there is a way to modify the receiver, by adding a resistor at the input signal selector to where the DVD player is. If that is what you want.
Let me know if you want to modify and I will instruct you

Posted on Mar 14, 2011

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  • Danilo Baraquiel
    Danilo Baraquiel Mar 15, 2011

    hi. sir may I ask you what type of connector you are using to connect your DVD player to the reciever?pls post back thank you!

  • Danilo Baraquiel
    Danilo Baraquiel Mar 17, 2011

    at the auxiliary input of your receiver,to where your DVD player is hooked up cut the positive line of the RCA jack then install a 1/2 watt 600 ohms resistor to lessen the signal input.

  • Danilo Baraquiel
    Danilo Baraquiel Mar 18, 2011

    yes sir that will work.

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  • Master
  • 5,807 Answers

To balance the volume level, you may need to lower first the volume of the DVD audio output

level,

DVD player has it own volume level control, trim down a little to match with the level

on the DSTV using the DVD remote.


refer to the DVD manufacturer web site for adjusting the volume control, or post the

model of the DVD player so I can assist you to where to download one.



Or alternately if you have at least 4 channel Audio Mixer , you can use these

as volume control for adjusting the audio level on each.


Or have an audio compressor/limiter , it tends to limit the audio output at a certain level.

so it will not blow you away.


These unit is inserted on the input of the amplifier.



how to use a compressor :

http://www.pcmus.com/compressors.htm



some images can be found here:


http://www.tweakheadz.com/compressors.htm


http://www.mercenary.com/dynproc1.html


you tube video of an audio compressor


http://www.youtube.com/watch?v=dmJQRjBtuE4


But if you need to DIY , here is a simple compressor circuit


http://graffiti.virgin.net/ljmayes.mal/comp/comp.htm



Although some professional amplifiers like Crown have built in compressor/

limiter

Posted on Mar 15, 2011

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  • Master
  • 1,591 Answers

I had a buddy with a similar issue, but your situation might be different.
If your DSTV remote is capable of altering the volume, DON'T. Max it out (or close to it) and use the NAD to control yout TV volume as well as the DVD, and it should be fine.
If this is NOT your situation, click REPLY here and I'll advise you further.

Posted on Mar 14, 2011

  • Norman Skinner
    Norman Skinner Mar 14, 2011

    Just an aside, my buddy's line out didn't adjust when he adjusted the volume on his TV...A BIG problem when connecting to his surround unit. I eventually built him a line level attenuator, and he's real happy with it.

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