Question about NAD C320 2-Channel Amplifier

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Volume level switch for automotive audio amplifier

Is there a product that will apply power to my car amplifier only when music is actually playing? The amp(s) have a sense circuit that let them operate on/off when the radio is on/off, however, I'm using a car computer that has no such output circuit. I'd like to put the sound card signal into a box inline with the amplifier and have that box control the amplifiers turning on when the volume level reaches a certain level and then stay on for a predefined delay period.

The reason for this is that the computer has no output like a car radio to turn on an amplifier so I wire the amp radio sense to accessory and amps come on with ignition switch. The computer always puts out some low level noise, be it white noise or processor RF, especially before the sound card is initialized while booting. The amps being on all the time with the ignition switch makes it annoying.

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5 Suggested Answers

  • 2 Answers

SOURCE: nad 302 amplifier

sounds to me that the vol control has lost its earth end connection So yes its a problem with the dial control You couls try some contact cleaner But better still lift of the lid and base if possible while the amplifier is not plugged into the power socket and see if you have a dry joints around the vol control pot regards Trev

Posted on Mar 14, 2007

snakehead
  • 1070 Answers

SOURCE: 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

robotek
  • 1512 Answers

SOURCE: nad s200

It is most probably a dirty speaker protection relay. gently tap the relay(the one that engages shortly after turning the amp on) when the fault is occurring and see audio returns. This should ascertain the problem. Replace it if it is a sealed type, or if it has a "lid" you can get off, burnish the contacts with a white business card, and give it a spray with contact cleaner/lubricant. Good luck and a "fixYa" rating would be great for my profile :)

Posted on Feb 06, 2008

marsrover
  • 682 Answers

SOURCE: nad 310 amplifier VERY QUIET

take audio out from tv and insert it in aux in in your amp.

Posted on Jul 15, 2008

alexhor
  • 28 Answers

SOURCE: excess clipping on nad 372 amp

Check the input from the pre-amp stage it probably has a high input gain that supposedly in only range of a millivolts 1/100ths of a volt usually 50 to 100mV, i.e. to avoid clipping of sound waves at the power amp. you have to minimize the output voltage coming from the audio/sound devices from its equalizer settings, or maybe either pre-amp stage I.C. has a leaky capacitor, or power amp stage is also defective. hope this help good day ;-)

Posted on May 24, 2009

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1 Answer

My NAD C350 plays very faintly. when I turn the volume dial to the max position, I can bearly hear the music. I can hear properly from earphones output. Thanks


Take care. First put the volume down complete. Then unplug the head phone and than try to raise the volume. Could be the headphone connector does not switch through correct. Could be the connections between the pre and power amp are not in place or not proper pushed in?
Always take care when working with amplifiers. When switching them on with volume to max, you easy can kill your speakers. Also when disconnecting the headphones on full power kan damage the loudspeakers.

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Don,t turn it over 2 then,LOL: It has developed a internal problem end is going into what is called the protect mode. You will have to take it in for repair.

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The main amplifer ICs have taken a dump. Time to go shopping!

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If your amp has ability to play 2ohms, then it will play. It will play even it dosn't have the provision. It might cause damage to the audio output at certain level if volume level is increased. My advice is to check your amp. or read the user mannual for perfact usage. Thanks

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1 Answer

Volume at 10 produces very low speaker output.!?


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1 Answer

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1-keep good ventillation around and do not block any ventillation holes with any thing.
2-check your connection cable in good condition no touching of inner conductor with any chasis.
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Hi,
Can you, or can someone you know, check for DC voltage on the speaker terminals when the amp is on, but not playing? Ideally, the meter should read 0mV with no signal, and certainly less than +/- 10mV. Anything over +/- 30mV is worth having checked out, especially if it changes as you turn the volume knob with no signal applied.

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1 Answer

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1 Answer

How to set up an intigrated amp to a 100 watt reciever


audio connection must have matching in audio level and symetrical.
1-prepare your connection cabels(better to be colour marked at connector(red for right channel- white for left chanel).
2-take pre amp right out to power amlifier right in.
3-take pre amp left out to power amplifier left in.
4-connect amplifier right out to right loudspeaker.
5-connect amplifier left out to left speaker.
6-adjust volume level and enjoyyy.

Feb 26, 2008 | Audio Players & Recorders

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