Amp Help - BMW Forum

bimmer3214 · 06-20-2006, 04:53 PM

So my stereo was working on my way to work this morning fine. everything just perfect. about 6 hours later when i leave work my subs arent working. So i think they are disconnected or something so i just drive home. I get home look and they are connected. I look at the amp everything is working fine green light. everything elumenated. So i check fuses, which are all fine. then i check the speaker wire. ALso fine i switched out about four times. Then im like shit it must be my speakers so i try to hook up different speakers to the amp. No luck. tried with about a hundred different peices of wire no luck. so then i think rca wires. everything is fine with those. I even took out my HU to make sure they were in the right places. everything is connected and all fuses are good. No sound from any speakers or any speaker wire. Is it blown. Someone help fast i hate driving without base.

RexKing86 · 06-20-2006, 07:13 PM

are your subs hooked up in series or parallel? Idk for sure, but I knoe doing it one way causes an amp to die quicker... sorry that was vague.

da_bull · 06-20-2006, 10:07 PM

Get a voltmeter, check the power and remote lead for 10 volts or more. Use the amp's ground to ground your meter (that'll check to make sure you havent lost ground). If that is good, hook up a known good speaker to only one channel (left or right doesnt matter) to see if the amp is still good. I am betting on one (or both) of your speakers are blown and it took out your amp with it. It is very common. A lot of times when a speaker blows you cant turn off your amp fast enough to keep damage from happening. Sorry to be the bearer of bad news. Good luck...

bimmer3214 · 06-20-2006, 11:09 PM

so a 980 MAx watt amp can take out 2 1500 max watt Type-r's i thought they were super under power. but ill check it out tomarrow. thanks for the help. oh and iv already hooked up like three different good positivly good speakers and none have worked.

bimmer3214 · 06-20-2006, 11:19 PM

well its not the subs i just tried them cuz i got scared. they still work. so is the amp just fried. i Had them hooked up like on a two channel amp. positive on left side negative on right side. then i had a wire running from negative to positve on subs and then the wires from the amp hooked to one and negitve to another. i think thats parallel

da_bull · 06-21-2006, 05:23 AM

Quote:

Originally Posted by bimmer3214

so a 980 MAx watt amp can take out 2 1500 max watt Type-r's i thought they were super under power. but ill check it out tomarrow. thanks for the help. oh and iv already hooked up like three different good positivly good speakers and none have worked.

Its distortion, not power that destroys speakers. Underpowering a speaker is actually worse than too much power. I can kill one of your speakers with 10 watts, if that ten watts is distorted. More power controls the speaker better.

The problem is our cars are built so well to isolate sound coming from the outside of the car keeping the interior quiet, that its hard to reproduce bass. They are built to shroud out low frequency road noise as you travel. We want the low frequency bass, hence you have to turn the subs up a little.

Here is a series vs. parallel diagram:

bimmer3214 · 06-21-2006, 07:17 AM

ok i had a series not parallel. but my speakers arent blowen they work just fine.

da_bull · 06-21-2006, 05:34 PM

just for something to keep in mind, not a big deal but anyways...when wired in series, if one speaker comes disconnected or blows up, the other wont play due to lack of a continuous wire.

bimmer3214 · 06-21-2006, 07:57 PM

yes i know that its happen like a million times. haha. i ckecked that its good speakers work fine. I tried different speakers know to work on both channels and hooked up like i had the subs hooked up and nothing. There is power to the amp green light saying its good everything eluminated but no sound. Does this mean its blown? Or can there be nothing liten up if it is blown? i just need to know if its blown or not

da_bull · 06-21-2006, 09:33 PM

When the green light comes on, on a lot of amplifiers that just means you have power at the remote lead, not neccesarily that the power chips are turning on and operating as normal. see if you can borrow a buddies amp, hook it to one speaker. This will let you and I know if the RCAs are still good. I'm betting on the amp being blown.

bimmer3214 · 06-21-2006, 11:05 PM

ok thanks Da bull you have been a big help. i wanted a new amp anyways and this is just a reason to go buy one.

da_bull · 06-22-2006, 05:14 AM

lol, there ya go, new audio stuff FTW...