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Alpine CDA 9885 sub problem

Old 02-28-2014, 06:42 PM
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Alpine CDA 9885 sub problem

Hey guys, hope someone can help me. I hooked and amp and sub up to my Alpine CDA 9885. Sub sounds good when I am listening to a CD. As soon as I switch to the tuner the sub shuts off. Anyone have a clue what could be causing this? Any help would be greatly appreciated. Thanks for looking.
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Old 02-28-2014, 06:46 PM
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do you still get sound through the speakers
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Old 02-28-2014, 06:48 PM
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Yeah, just the Sub stops working.
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Old 02-28-2014, 06:51 PM
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I have read all kinds of people having the opposite problem. Usually their subs don't work in CD mode because they hook to the power ant. wire instead of the remote turn on. I can't find anyone who is having the same problem I am.
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Old 02-28-2014, 06:54 PM
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sounds alot like a bad head unit , or wiring problem , it might be the tunner portion of your cd player and gone bad which would make sense why its not allowing you to get bass , or just could be due to a wiring problem , its very odd that the stereo plays through cds without issues , so im thinking that its the tunner portion of your cd player thats gone bad , or a wire was misused somewere


I would pop it out and check the wires , do you have another head unit you can try

Last edited by luke99; 02-28-2014 at 07:03 PM.
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Old 02-28-2014, 07:03 PM
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I just went out and looked. When I switch to tuner the amp itself shuts off. Should I try splicing the power antenna wire with the remote turn on? Everything else works fine, just the amp shuts off in tuner mode.
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Old 02-28-2014, 07:04 PM
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did you ever get bass from your sub from the radio
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Old 02-28-2014, 07:06 PM
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you shouldnt have to splice the wires at all , the factory wiring harness should have a antenna turn on for you match up with , you dont want to be cutting into the other wires I would check all your wires and see how they match up
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Old 02-28-2014, 07:06 PM
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No. I just put the amp and sub in this afternoon. Tested it with a CD and then had to run somewhere. Switched to tuner and the amp shut off.
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Old 02-28-2014, 07:07 PM
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Comes back on as soon as I turn it back to CD.
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