I am helping my son hook up a amp and subwoofers to his head unit. I am not getting much sound out. Very low volume. I made the following measurements at the amp: voltage going to amp with engine off - 12.5 V voltage going to amp with engine on - 14.6 V I made the OHMS of the speakers not connected to the amp. I expect 4 OHMS. I measured 3.7 and while I was measuring them they would go 3.7, 3.6, 3.5, 3.4 and than back to 3.7 OHMS. It wasn't a solid reading. The amp is an Audiobahn A8000T and the speakers are JL Audio 12wd4. The head unit is a sony or something? I have tried wiring the amp with speaker level inputs and RCA. Neither produce any volume to speak of. I know the head unit is not producing much in the low frequencies and my son does need to geta head unit with RCA subwoofer output. Any suggestion why I am not getting much sound? Thanks, Gary
hmmmm...so is the amp powering up? maybe the fader setting is not set to what ever channel you are useing for the amp. also is the gain turned up at all? also some times with radio's when your useing the rca outs you have to go into the menu to turn on the output.
Oh and also the ohms (impedance) changes with diffrent frequences in music.it goes up and down.thats normal.
Yes, the amp powers up just fine. When I was using speaker level inputs to the amp I was just taping off the rear speakers. The rear speakers were still connected and being driven by the head unit. They rear speakers sounded just fine. When I was measuring the OHMS of the speaker setup there was nothing conected to them. I would of expeted their OHM reading to be rock solid?
The gains and level are set mid way to high. A new piece of information is, the entire system started working 100% yesterday when my son went to use his car. He did notice that the head unit looses its lights (I assume power) occasionally for a split second.
