Question about NAD C340 Integrated Amplifier

1 Answer

Amplifier cutting out when volume is increased

My amplifier cuts out as soon as I exceed a fifth of the maximum dial turn on the volume dial. All of the LEDs start to flash and I can only get the amplifier to work again by switching the amplifier on and off again and reducing the volume. Any suggestions gratefully recieved.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,070 Answers
Re: Amplifier cutting out when volume is increased

Yea my friend your audio ic or transistor is either getting faulty or you have lose connection have a tech look at your set and make the nessecary repairs.good luck

Posted on Apr 26, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Amplifier works at low volume levels. When volume is turned up it cuts out for a few seconds then there is a click and it comes back on and then cuts out again until the volume is returned to a low...

Try looking at the rear of the amplifier to see what the speaker load should will be measured in will then want to look at the speakers to see what the impedance is on the speakers...if it is LOWER than what is on the back of the amplifier, then you have an impedance mismatch which is causing the amp to go into protect... If the speakers are in fact the proper impedance then you probably have a bad can test this out by disconnecting one speaker and trying it,,,and then the other and so on...another thing to try would be to obtain another pair of speakers with the proper impedance to see if they if you try all this and the amp still cuts out..them there probably is a problem inside the amp...I specialize in Vintage Audio so try these things first...if you have questions feel free to email at

Dec 30, 2010 | Marantz PM7200 2-Channel Amplifier

1 Answer

Restek amplifier channels cut out sometimes

My Restek has the same problem.
Change the volume potentiometer. Use an 10KOhm Alps potentiometer and your problem should be solved.

Sep 30, 2009 | Amplifiers & Preamps

1 Answer

The left channel in my Cambridge Azur 640 amplifier keeps cutting out. Wierdly I can often 'shock' it back to life by quickly turning up the volume a lot. Any ideas?

have the volume control cleaned by a spray of electronic contact cleaner. If the carbon coating material is already wiped-out due to use, have the part replaced

Aug 03, 2009 | Cambridge Audio Azur 640A Amplifier

1 Answer

I have a denon amplifier Model : AVR-2805G when i turn off the amplifier the volume for DVD player cannot be increased pls advise

you have to hook the dvd player directly up to the tv in order to get volume. when you turn the amplifier off, it's going to cut off the volume to the dvd player.

Jul 31, 2009 | Amplifiers & Preamps

1 Answer

Amp cutting out

You have one of two solutions.

One: you have the speaker ohm load lower or higher than the amplifier will support. You should check the ohms rating on your speakers vs. the amplifier. Make sure you match up the rates for proper operation. You can also try out a different set of speakers and see if they work properly.

Two: You have an electronics failure within the amplifier. You need to obtain the electronic knowledge and schematics for servicing your unit or bring it to a repair facility in your area.

Just as an FYI.... double check your speaker cables and make sure that neither the left or right is shorting together. Make sure the bare conductors are not touching anywhere. A pinched or damaged speakers wire can also cause the symptoms you are talking about.

Jan 20, 2009 | Amplifiers & Preamps

1 Answer

6000d amplifier cutting off

Crown has posted on their website all the tech info you can probably use for your situation.


Jan 15, 2009 | Crown XTi 2000 2-Channel Amplifier

1 Answer

Cuts out when volume increased

it went to protection mode check your cables first and then check your speakers-and confirm no cable touch each other(try with another speakers had same rating)(watt)--means how much power can get.

Jul 28, 2008 | NAD C320 2-Channel Amplifier

1 Answer

Amplifier power cutting out

not enough power to amp and or amps location is too hot might want to invest in a couple cooling fans from computer store and attach where needed

an amp should take up to 3/4 load but when not enough air to it to cool it off it will shut down

try this turn gain all the way down and slowly work up too desired amp volume setting

May 07, 2008 | Amplifiers & Preamps

2 Answers

Sound cuts when volume is turned up

check that power amplifier rating(how many watt)must be more than total speaker rating by 20% at least..
exampel:if speakers watts are 100 watt-amplifier watt must be 120 watt.

Mar 14, 2008 | Technics SUV500 2-Channel Amplifier

1 Answer

High volume cut out

power amplifier circuitry problem,you need a qualified serviceman.

Oct 04, 2006 | Sony STR-DE595 5-Channel Amplifier

Not finding what you are looking for?
Amplifiers & Preamps Logo

Related Topics:

321 people viewed this question

Ask a Question

Usually answered in minutes!

Top NAD Amplifiers & Preamps Experts


Level 3 Expert

4518 Answers

The Knight
The Knight

Level 3 Expert

66685 Answers

Larry Stiles
Larry Stiles

Level 2 Expert

286 Answers

Are you a NAD Amplifier and Preamp Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides