Question about Kenwood KDC-MP642U

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I have this deck, an 800w Kenwood amp, and a Kenwood Typhoon 12" subwoofer. I have learned all of the function to deal with adjusting the sound settings. However, when using the AUX source and the USB source, I am getting either no subwoofer output, or just amp output in general. In each source all of my settings have been adjusted to how it should sound, but still no output. Anyone with the same issue who solved this? Anything I'm missing? Wiring? Any help would be great because I'd really like to get my personal music library kickin'.

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6ya6ya
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Posted on Jan 02, 2017

  • 14 Answers

SOURCE: Kenwood kdc-mp528 amp/speaker problem???

This is a common mistake. This problem indicates that you are using the solid blue wire from the head unit to the remote turn-on on the amp. This is a power antenna wire that only receives power when on FM radio. You need to replace this with the Blue & White wire from the head unit (power control wire) to your remote turn-on on your amp. This should solve your issue.

Posted on May 12, 2007

KaeZoo
  • 156 Answers

SOURCE: Audio Output problems

Currently you have the blue wire from your Kenwood head unit connected to the blue wire in the Chrysler wire harness adapter. You need to disconnect this wire, and reconnect it to the blue/white wire coming from your Kenwood head unit instead. You probably already have the remote wire from your subwoofer amp connected there; both wires need to be attached to the blue/white Kenwood remote output. Your LHS is equipped with a factory amp. The blue wire in the Chrysler harness activates the amplifier, but it's connected to your Kenwood's power antenna activation output; therefore it's only being turned on when the tuner is selected.

Posted on Jun 04, 2007

  • 1 Answer

SOURCE: My deck doesnt have aux as a source

I enabled the AUX as a source by pressing and holding the menu button (located to the left of the volume knob) then pressing the control knob up till I found the AUX options and put it on AUX2 so I wouldn't hear the audio feedback.

Posted on Mar 24, 2008

  • 132 Answers

SOURCE: Sub Control

in standby hold menu down and scroll to rear and change it to sub

Posted on Jul 25, 2008

  • 30 Answers

SOURCE: kenwood mp638U sound system problem

try to put the remote of the facory amp to ign power

Posted on Jul 14, 2009

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Simple way to test this is to adjust the L/R balance of your deck all the way left or right and see if the amount of bass changes. If you balance all the way left and you lose your base completely then you know your amp isn't getting signal from the left channel thus if you move it all the way to the right and the bass disappears then the problem is with the right channel.

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I wish to know the correct way to connect a Schneider 800w amp Model:spa-9705. What I have is a lead from my deck(marked sub woofer - 1 x red & 1 x black) but at the back of the amp in question it has 4 x...


Hello i_starlin606,

The Schneider SPA-9705 is a 4-channel bridgeable amp. How you intend to use it and what speaker(s) or subwoofer(s) you are connecting to it will determine the appropriate hookup.

If used to drive 4 sets of normal speakers, you would connect your front channels to one set of inputs (usually 1 and 2) and the rear channels to the other set. You would not use the subwoofer outputs coming from the deck.

If used to drive subwoofer(s), you would need two "Y" adapters with a female input side and 2 male outputs. The cables marked "subwoofer" would be plugged into the female "Y" and the male ends would be plugged into the 4 channel inputs on the amp (paired as 1-2 and 3-4). The front and rear preamp outputs on the deck would not be used.

Speaker/subwoofer connections will depend of the number of individual speakers or subs, whether they have single or dual voice coils, and the impedances of the voice coils.

Hope this helps.

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