Panagiotis Peponis Posted July 17, 2014 Report Posted July 17, 2014 Hello guys! today i installed my sub and amp.the problem is i have properly connect my sub and amp and set the gain withe the DMM but the sound of the sub is way to low.even at max gain it barely sounds.i tested the sub with another amp i have in my car and works fine.
Jessica Posted July 17, 2014 Report Posted July 17, 2014 Let me check my magic 8 ball..... Better yet, what amp, what sub? some more details would be nice. or i could do the 8 ball thing. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13
Panagiotis Peponis Posted July 17, 2014 Author Report Posted July 17, 2014 the sub is a magnat bs30 and the amp sony xm1s
Jessica Posted July 17, 2014 Report Posted July 17, 2014 are you sure you dont have one coil wired backward? Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13
Jessica Posted July 17, 2014 Report Posted July 17, 2014 i see you tried it on a different amp, so i would check your LPF on the sony, where do you have it set? Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13
Panagiotis Peponis Posted July 17, 2014 Author Report Posted July 17, 2014 its a single voice coil. the lp filter is set to about 90 hz
MaxVolume Posted July 17, 2014 Report Posted July 17, 2014 Identify. Isolate. Eliminate. If the sub played reasonably on a different amp, then the issue is associated with the original amp. Having said that, it doesn't necessarily mean the amp is bad. There could be some settings on the original amp that are incorrect, the wiring to the amp/sub could be incorrect, or maybe the amp is just bad after all.
Panagiotis Peponis Posted July 19, 2014 Author Report Posted July 19, 2014 i tested the whole system with different amp and it worked so there is something with the amp.although the gain is set to max stil when play a test tone the output voltage is low so the sub doesnt get enough power. (the lp is set at about 80 hz , subsonic filter on and no bass boost, there arent any other settings available) . Today i checked the fuses and seem good.but i notice that even with one fuse (the amp has two in total) the amp works .then remove the other one and insert the first one and still works. in both tests the output was the same.it seem like only the half of the amp works and produces doing the voltage calculations at about 140 watts instead of 290
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