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Amp and Stereo hooked up, no sound coming from the sub

I hooked up my sub to an amp and had it working for several days. It stopped working and i noticed that the ground wire no longer sparked when it touched metal, i stripped it down away and it worked again. About a week later, i got the same problem but this time when i stripped the wire down, it didn't help. I got a 4k watt amp and a 15" Eclipse. The amp turns on but there is no sound from the sub

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It sounds as though either the sub or amp is blown. When an amp blows quite often the light will still light, but the internals are trashed. The only surefire way to tell whats going on is to use a Digital Multi-meter to check the impedance of the sub, and the voltage at the amp. You can get a multimeter as cheap as $10 at most autoparts stores, Radioshack, Sears, etc...
Also, always post brand names and model numbers, because more info equals more help.

Posted on Aug 04, 2008

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I have a stock stereo and two subs with an amp in the trunk. Also two alpine speakers in the rear. Whenever I turn my balance to the left my subs don't play. What's wrong?


Hello.... I am sorry to hear you are having problems. The reason for this is that since you have a stock stereo, the shop (or person) whom installed the amp and subs used a line out converter. What this part does is allows the connection of RCA cables to the factory head unit. Almost all bass signals are always in stereo, so since you were only hooking an amplifier for just subs, you can actually just connect to just one of the rear speakers instead of connecting to the right and left. Just makes the install a little quicker. There is nothing wrong with this as I usually do the same thing in our shop. However, if you are going to be using the balance control, then you will need to go back to the shop and have them hook the converter up in stereo (to both rear speakers). Hope this helps!

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1 Answer

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IF YOU HAVE THE SAME AMOUNT OF CABLES AS SPEAKERS HOOK THESE UP TO YOUR AMP THEN SUB TO SUB OUT PUT ON YOUR AMP WITH A SUB CABLE OR PHONO THAT REACHES FROM AMP TO SUB.SET AMP TO ALL CHANNEL STEREO OR MODE THAT SENDS STEREO TO ALL SPEAKERS,ALSO SET SPEAKER SIZE IN SETUP OF AMP TO SMALL AND SUB OUT PUT TO SUB ONLY.YOU SHOULD GET MUSIC AROUND THE HOUSE.IF SOUND IN SAY BEDROOM IS NOT AS LOUD AS BATHROOM USE THE TEST TONE TO LEVEL OUT EACH SPEAKER.

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1 Answer

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Any idea how this is all wired up?
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