Question about NAD C370 2-Channel Amplifier

1 Answer

C370 faint crackling sound left channel

Started a while ago after a party, problem went away for a while, but is back now. Happens on both channels (A and B speakers) but only left channel. Quite faint high frequency almost like a constant whisper. Any thoughts welcome.

Posted by on

  • alexpatel
    alexpatel Jan 08, 2013

    Thanks, but it's an internal problem to the amp causing the interference I think

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

Have you tried looking at your phono leads,turn volume down until it is low enough that you can still hear the music playing,give the phono leads a turn to see if its a loose connection.if not,try the right channel phono in the left channel to see if this fixes your problem.also you could do the same with your speaker leads and see if that solves the issue.maybe a bad connection is the cause?.it may also help to try and move your cd player away from your amplifier.it could also have been overdriven (played too loud for too long) on the night of the party,only you will know if this was the case or not.

Posted on Jan 08, 2013

  • alexpatel
    alexpatel Jan 08, 2013

    It's not a bad connection or a the phono cables. It was over driven a lot, up to around 3am I think but soft clipping was on and the speakers can take it so nothing was broken as such. Yesterday it stopped, today it has come back. Sometimes when I turn the amp off and on it's ok for a while then starts again.

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
VOTIT
  • 2071 Answers

SOURCE: NAD C370 problem

Sounds like a headphones and the power is there,of course power supply is good because there is a little sounds.This is the most common problem of the power amp.section.The solder holding the IC of that power amp.is crack you better reheat or resolder it.The cause of cracking is the vibration and temperature changing it tooks how many years that's crack comes out.The big IC there which you going to reheat is the STK IC.If nothinng improvments happen,you better change that IC,so better performance comes out,.

Posted on Jun 17, 2008

Grubhead
  • 5190 Answers

SOURCE: NAD C370 Right channel distortion

Sounds like you have lost the power amp transistor(s) or IC for this channel.

Posted on Feb 16, 2009

petraman7
  • 1175 Answers

SOURCE: no sound from amplifier on both channels

Hi...
All the main power supply capacitors need to be replaced.
I'm figuring it's an older unit?
Let me know
Thanks,
Scott

Posted on Mar 24, 2009

  • 4234 Answers

SOURCE: Hi, I have a second hand NAD 3240PE amplifier, the

Crackling is usually a dirty control. Try using an electronics cleaner (with lubricant) and spray out all of the controls and switches. With the unit off, work the controls and switches back and forth to "spread" the lubricant. I would spray, work and spray again.

Update this with the results and also see if the crackling is related to the overall volume level. If tied to the volume level, there could be a transistor inside that is breaking down and causing distortion.

Dan

Posted on Dec 28, 2009

  • 185 Answers

SOURCE: my NAD C350 amp only powers one speaker channel

over heating is a sign of overloading or over bias

Posted on May 27, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Why i can hear faint sound on my mixing amplifier


Depends on what sound it is. If it's a hum, then it could be a fault. If the hum is on one channel then the place to look is that channel. You can compare the good channel with the bad one for clues as to what.
If it is in both channels then you are looking at the power supply. Or something common to both channels.
Hum is most often caused by Electrolytic Capacitors.
Crackling noises are caused by resistors, or transistors, or IC's.

Jul 01, 2016 | Audio Players & Recorders

1 Answer

Left speaker not working, system crackles if left side is active, alright when left side shut down.


Get a meter and check the resistance on the speaker. Looks like a speaker may be blown but with the description of the crackle noise from the slide controls you might have a bad pot in the unit or the pot has come loose from the board. This could explain why the speaker blew out

Jul 30, 2015 | Behringer Europort EPA150 Ultra-Compact...

1 Answer

Why does the left channel of mixer randomly crackle, distort, and/or cut-out?


left channel control pot dirty most likely. is there a slider type pot on channel? this would have to be cleaned with dustoff spray.

May 06, 2012 | Behringer Music

1 Answer

Hi, I get very intermittent hissing/crackling from the left channel of my NAD C370. I've replaced the speaker wire and the wire that I'm using for bridges on my AE Evo 3 speakers which seems to have...


Could be caused by a burnt resistor in the channel of the main power amp. You should be able to see it. It might have been caused by the faulty speaker wires.

Oct 07, 2017 | Audio Players & Recorders

1 Answer

Losing the right channel


usually this would indicate a dry joint inside or some other temp related intermittent fault, component problem. Take it to a tech and tell them what happens

Sep 17, 2009 | NAD C370 2-Channel Amplifier

2 Answers

Channel 2 crackles


Make sure your speaker wiring does not come close to the 12v power cable running for your amplifier. If your amplifier's 12v power cable runs on the drivers side of the vehicle, run your speaker cables on the passengers side and make sure your tweeters have a high pass filter to stop any pickup of engine sound (When you are driving you *WILL* notice it at high RPM. a HPF (High Pass Filter) will also stop those nasty hissing sounds on S's.

Feb 11, 2009 | Alpine PDX-4.100 Car Audio Amplifier

1 Answer

Speakers crackle, then sporadically stop


Sounds like an amplifer fault. Many of these Midi system use a large black IC attached to a metal heatsink. They control both the power amp and pre amp on both channels. When they go wrong they can cause all sorts of effects,
If you can repair things I would look at that. If not get ready for a large bill. If it's the IC some are expensive, it does most of the work!

Jan 25, 2009 | Sony CMT-HP7 CD Shelf System

1 Answer

NAD C370 Right channel distortion


Sounds like you have lost the power amp transistor(s) or IC for this channel.

Aug 29, 2008 | NAD C370 2-Channel Amplifier

2 Answers

No output from left channel after crackling sound


Marantz SR 5200/6200 lost audio or crackling on left or right channel except in mode s-direct is now fixed !
The root cause is a defective inegrated circuit on DSP board (the one with digital inputs). To fix it change the chip CS4391 by a new one or better by the improved version CS4392. On my device a capacitor was cut close to this IC : replace one 1uF after changing the IC. For any question search me with my callsing "F5RCT"; i have a spare IC for the one who is able to change it !
I'm amateur radio and engineer

Jul 08, 2007 | Marantz SR-4200 Receiver

1 Answer

After a while the system starts crackling and eventually sound deteriorates to thundering in speakers


Hi, I have exactly the same prob and I belive that it is in the amp module?! I am going to take mine in for repair as my other sony HT amp has just give up the ghost, (STR-DE435), it has a protector prob and is probably not worth repairing, although it is a great amp. If anyone knows the solution to this prob it would be great to hear it!!!

Nov 21, 2006 | Sony DAV-SA30 System

Not finding what you are looking for?
NAD C370 2-Channel Amplifier Logo

197 people viewed this question

Ask a Question

Usually answered in minutes!

Top NAD Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5190 Answers

The Knight
The Knight

Level 3 Expert

74482 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a NAD Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...