I have a 2ohm DVC Alpine Type R 12" hooked up to a 750s SoundStream amp. It's wired to 1 ohm which the amp is stable at on a high current setting. The headunit is a Pioneer. Sometimes while listening to music the sub will start rumbling really hard and I will have to cut the stereo off. The headunit has a setting to turn the subwoofer on and off but cutting it off from there dosn't stop the rumbling. It will only quit when the unit is off. Usually when I cut it right back on it will start doing it again. If left sitting for a while (like over night) it will not do it when I turn it on again then. At least not for a while. Everything is hooked up correctly as far as I know. I am pretty knowledgable about car audio and I've never had a problem like this with a system before. I was thinking it might have to do with the fact that I have no trunk liner right now and the amp is sitting directly on the same metal it is grounded to but I'm not sure if that really makes a difference. I've bolted amps down to metal parts before and had no problem so I don't know. If anyone has a clue what may be going on please let me know what I should check. Thanks in advance.
2007-01-22 16:55:56 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Car Audio
The resistance of either the power line, the return line, or the power source of your amplifier (i.e., the car battery itself) is too great for the amount of current you're trying to source. A large capacitor placed across the battery might help, but first place a fast-acting voltmeter across various points in your system's DC lines and see if, for example, you're getting significant voltage drop across a connector or a stretch of wire. The voltage across the battery terminals should be steady and solid. Assume nothing: there's something wrong, and it could be truly weird, like an internally-corroded terminal or a wire that's not as thick as advertised. Even fuses play tricks. Good luck, and wear ear protection.
2007-01-22 17:28:45 · answer #1 · answered by 2n2222 6 · 0⤊ 0⤋
bad ground, a buddy had the same problem running two amps (totalling 1750 watts), 4 subs and 2 6x9's. he used 12 gauge wiring and spliced that into more 12 gauge for the amps.
if turning the gain down stops it, then that is the problem.
2007-01-23 23:10:09 · answer #2 · answered by Calvin D 2 · 0⤊ 0⤋
Your amplifier is the problem area. by potential of switching the sub-off on your HU, and it nevertheless does it, that exhibits to me that this is the amp. I do imagine your grounding for the amp is causing the rumbles. try re-grounding the amp and then isolate the mounting floor. this can reslove any floor loop issues.
2016-10-17 02:51:38 · answer #3 · answered by ? 4 · 0⤊ 0⤋
it is possible it may be the head unit. if its like mine, when i change tracks or change radio stations, i get a slight rumble out of the sub. just a thought.
2007-01-23 03:20:44 · answer #4 · answered by john m 3 · 0⤊ 0⤋
the only thing i could think of is mayb ur connections r not right so jus double check them it could also be ur rca cables try using a different set of rca & check it out from there
2007-01-22 19:40:03 · answer #5 · answered by fiekiej 1 · 0⤊ 0⤋