Subwoofer problem HELP!

Dejan Blanuša · Feb 9, 2019

Hello! I know it is a long shoot, but I will try anyway...

I have a car audio unit Alpine CD-E103BT. It is great, but I have one little problem. When I turn off subwoofer on that unit in subwoofer options menu, subwoofer works, but, when I turn it on, subwoofer doesn't work. Do You know what could be the problem? Sub is connected via amplifier to the head unit.

Thanx!

ckeeler11 · Feb 11, 2019

I assume you are using RCA's from the headunit to the amp? Are you using the remote wire from the headunit to the amp?

DRBOOM · Feb 11, 2019

Hey mate, so it works sometimes and when you turn on, it does not work.

Sounds like a loose remote (blue) wire issue but could also be the amplifier. I suggest you check the following:

when you turn your stereo on, check if the amplifier switches on as well, if it does not, then most likely a loose remote wire connection;
if your amp goes on and the sub does not play, then it could be a loose connection inside the subwoofer box / subwoofer connection; check that out too!
Lastly, If the problem still persists, then you may be required to check your connections behind your Alpine unit; including the remote (blue) turn on wire that goes to your amp;
If the issue still remains, then it could also be faulty RCA cable as well, use a multimeter for resistance;
use multimeter to check subwoofer wiring as well so it gives you a clean reading before you take subwoofer out;
also check RCA connections behind the Alpine head unit and the amp as well;

Its only a minor issue and hopefully you will rectify it soon mate! Good luck and let us know if its resolved.

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Subwoofer problem HELP!

Dejan Blanuša

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ckeeler11

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DRBOOM

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