Question about Alpine Ktp-445 Head Unit Amp Power 4ch Amplifier Ktp445
A whine comes out of the speakers when you power unit on...only when connected to the power pack. there is no difference in power between the power pack and the head unit. is the unit defective?
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Posted on Jan 02, 2017
SOURCE: Alpine CVA-1004
lol i had the exact problem that you are having with my alpine. The solution is taking the blue cord that was inside the vehicle (forgot what cord it was) and actually connecting it with the other blue cord thats different makes the factory amp read the cd player and ta-da it works. crazy isn't it
Posted on Apr 04, 2007
You need to run the RCA cables from the head unit to the sub for the audio signal, and possibly a turn on wire (the blue one on the back of the head unit), unless the sub has an automatic power feature.
The sub also needs power and ground wires attached, but those do not connect to the head unit. Power should be run directly from the battery with an inline fuse, and ground should go to the nearest good ground point (Trunk latch, seat bolt, etc).
Posted on Mar 28, 2009
SOURCE: No sound from my 9855 alpine
There is an option in the unit itself to turn off the internal amplifier. If you push the 'menu' button, then go to the setup/settings menu, and then i believe it was under the 'general settings' tab. there's a option called INT IC or something. Make sure that is turned on.
Posted on Jun 01, 2009
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