Question about Alphasonik PMA1800A Car Audio Amplifier
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Posted on Jan 02, 2017
SOURCE: Amp not putting out sound
This is not a problem that a normal comsumer should try to repair themselves. It's time to take it to a pro. It sounds like you have blown out at least one of your output channels. If you are getting any red light at all then the good news is that the power supply section of the amp is probably still good. About half of all the electronics in your amp is for the power supply section. The other half is for the actual amplifiers of the amp. Good luck, I hope it's not too bad.
Posted on Jun 14, 2007
It could be a problem with the head units remote wire (blue wire) that connects to the amp. It turns on the amp when the head unit is turned on, Check that wire for 12+ volts when head unit is on.
Be sure the amp is properly grounded,and the input and output signal (speaker) wires are connected.
You could also use a temp. jumper wire at the amp by jumping the power and remote terminals, just to see if the amp works.
Note: Do not leave the temp. jumper in place, amps are not meant to be continuously powered up. Make sure it is in a well ventilated area so as to disperse its heat.
Posted on Mar 15, 2009
Hey dude- if you dont figure out how to wire that thing up -i need one for my pma-2500a i got it from the pawn shop yo for 150 bucks !!!!!!! shwinggggg its a beast 1600 rms at 4 ohms bridged - what a steal but yea i need one so lets make a deal dude !!!
Posted on Jun 19, 2009
It depends on how you define the "best way". Driving each sub with a separate 750 watt amp will result in about 50 percent more power than having them share the output from a single 1000 watt amp. But with 2 amps, there's more wiring issues to contend with and the adjustments are more complex. The 2 750 watt amps will cost more than a single 1000. Plus if the 1000 watt amp is stable to 1 ohm, the power difference will actually be less than 50 percent because of the lower impedance. But if the 750 watt amps are also stable to 1 ohm and their outputs can be combined, we're back to 2 being better than 1.
I'd say that the simplest, most economical way is to use a single amp. If maximum power to the subs is the highest priority, and cost and wiring is not an issue, then 2 is better.
Hope this helps.
Posted on Jul 12, 2009
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