Subwoofer problem HELP!

[Dejan Blanuša]

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!

Click to read more...

 

[ckeeler11]

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]

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.