Question about Kenwood KDC-X590 CD Player

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No Sound I installed a Kenwood KDC-MP438u into my 94 BMW connected all the coresponding wires with the adapter, the unit turns on, it plays the cd's even plays from the usb device, but no sound comes out. So i switched to the stereo's tuner and the radio works, produces sound. So i thought there was a problem with the unit itself so i returned it and got a new one of the same model. Tryed to install again and STILL it doesn't work. Any ideas?

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  • ehtml Oct 03, 2008

    Also the Demo function of the unit is off.


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Same problem as above (installed in a Chrysler Cirrus with original amp and speakers and pre-out not used); I applied solution 1 above prior to seeing this site, and still very weak, tinny sound. With tuner on, it sounds great except for maybe just a slight lack of extra bass. Hopefully new speakers will fix that problem.

I plan to reset, disconnect - connect (car battery) and reset again; and also recheck connections.

Connections must have been Okay, since balance and fader functions are normal. Will reply later.

Posted on Oct 19, 2008

  • tackroc Oct 20, 2008


    I have a suspicion that when the tuner is in use; the radio internal amp is on because the power antenna is in use. However; when switching to USB, AUX or CD, the antenna retracts and removes power from the internal amp. Unforetuneately, the supplied user manual is not very clear.

    Any ideas or suggestions?

  • tackroc Oct 21, 2008

    From tackroc (KDC-MP438U)

    Having seen other comments on other generic installation web sites, I disconnected the blue motor antenna control wire, and hooked my car's antenna to the to the blue power control wire (I am not using an additional amp, just the OEM amp). This causes the antenna to stay up whenever the unit is not in standby but allows the internal amp to remain on. Maybe not the ideal solution, but now I do not need to add on another amp, and it sounds great. Can't wait to finish upgrading my speakers.

    Good luck!


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Go to standby hold m-log button tell menu comes on display press up on volume control tell amplifier comes on display pess left on volume control tell display says amp on. the built in amp on the stereo turns of and on to provide better sound quality to the pre-amp out puts

Posted on Oct 18, 2008

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