Question about Power Acoustik GOTHIC OV2-1600 Car Audio Amplifier

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Hot Amp!!! I recently upgraded to the Power Acoustik OV2-1600 amp. I have 2 5x7s and 2 1" tweeters that are running off of it. The speakers are wired into the factory wires and then I jumped off of the factory wires in the back to the amp inorder to get them to come on. So I only have one positive and one negative wire for all four speakers that are bridged on the amp. Could this be whats causing it to get so hot? Or could it be that the ground wire isnt large enough. My entire set up goes something like this...battery to cap, pos from cap to nonfused power block, from block to 2 amps(the first one I named and a 3000 watt mono), the negative goes from cap to chassis, then out of the second terminal the ground runs into a distribution block and then into both grounds of the amps. In otherwords the amps arent grounded to the chassis, they are grounded through the amp. The mono amp isnt getting hot right now, but I dont have my subs hooked up to it either. Please help!

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Re: Hot Amp!!!

Not really complex my friend. You cannot use the factory wiring in most vehicles as they use the ground as a common between the two rear speakers. Run two separate pairs of wires from the amp to the speakers and this should take care of the problem your having. Good Luck

Posted on Jun 27, 2007

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Re: Hot Amp!!!

I'm having trouble visualizing exactly how you have it set up. You said that the amps are "grounded through the amp" but I think you meant they're grounded through the cap. I don't think that's the cause of your problem, but the cap and amplifiers really should be grounded separately. There's no reason to run the grounds to the cap instead of directly to the chassis. It seems more likely to me that the problem is related to your speaker wiring. I'm not clear on how your speakers are wired either; I can see that you've kept the speakers on factory wiring, and connected the amp to the factory wires. But I don't understand how that translates to having only one set of wires for both speaker sets. We'll leave the tweeters out of it; if they're wired through a crossover, then they don't have a serious effect on the impedance. However, any way you look at it, you've got two 4-ohm speakers wired together to a bridged amplifier. Most 2-channel amps aren't designed to be connected to load impedance under 4 ohms when they're in bridged mode. If your speakers are wired in parallel, then the load impedance at the amp is 2 ohms. Having too low a load impedance is the most common cause of amplifier overheating. My advice is to re-wire the speakers so that one 5x7 and one tweeter (together with a crossover) is connected to each amplifier channel. Don't run the amp in bridged mode. Even in this configuration, I'd be amazed if your 5x7" speakers are really rated to handle 310 watts RMS, which is the per-channel power rating of your amp in 2-channel, 4-ohm mode. It sounds to me like you've got too big of an amp for the job.

Posted on Jun 26, 2007

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