Question about NAD C320 2-Channel 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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Posted on Jan 02, 2017
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
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
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
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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