I have a Visonik V800XD running a 15" Eclipse sub.. well I did. About 2 weeks ago I fiberglassed the inside of my custom sub box. When I turned my system back on then it worked for about 30 secs. and then it shut off. I checked how everything was hooked up and everything seemed ok (at this time I switched the + and - going to my sub because I don't know which is which, is red + or -?) However when I checked under the hood I found that I blew the fuse. Ok not a big deal so I replace it and when it turns on this time it just makes the sub go up and down to it's own beat making a really muffled sound. I took out the fuse and called it a night. After not having a system for 2 weeks I tried to see what was wrong yesterday. I took my sub out and hooked up another sub and it was ok for a while and then the fuse blew again. I checked today for any cuts in the power cable that might be grounding it but I can't find any (doesn't mean they aren't there but I want to get more info before I take the whole thing out of my car). So my question is this... Is my amp messed up or is it my wiring somehow? Thanks for your help guys, sorry for making you read that long post.
97 RS- Runs, but never driven 2000 Subaru Outback- Daily Driver
#5202, "RE: Help with sysytem" In response to Reply # 1
youve just got to narrow things down a bit by conducting some tests, then you can determain what might be causeing the problem and hunt it down. try this:
1)unhook the speaker wires that lead to the sub AT THE AMP (not at the sub). tak another speaker (it doesnt matter what you use) and hook it up directly to the amp using new speaker wire. (make sure the amps controls are altered to handle the speaker, so dont but a 4" speaker on an amp set at 80hz low pass and pumping 500 watts of power, LOL). see if it works correctly. if so, you know theres a problem with either the speaker or the wire inbetween the speaker and the amp.
2) unplug the RCA inputs (from the headunit) at the amp. now check for voltage between the + and - power terminals on the amp with a multimeter. make sure the voltage remains steady at at least 12.5 volts (13+ with the car running). if its not there might be a small short in the power wire somwhere causing the low voltage to the amp to do strange things, while at the same time causeing the fuse to blow.
have you tried using the subs in someone elses car? if you built the enclosure WAAAAY too big, its possible they overextended and the voice coil is begining to fail, which shorts out the amp outputs. this is very unlikly, especially on two subs in a row, but you never know. if all else fails, stick another amp in its place as suggested earlier, although i would be hesitent to do it right away with unpredictible and possibly volitile wiring.
if you look at the problem logically, you can determin that there HAS to be a short somwhere, thats the only reason why your fuse would blow at the battery. youve just got to narrow down wether its pre, post, or inner-amp.
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if all else fails, stick another amp in its place as suggested earlier, although i would be hesitent to do it right away with unpredictible and possibly volitile wiring.