Audio Systems: Kenwood car stereo volume fads after time, output impedance, 4 ohm speakers

Question
-Do you mean they are cross-connected at the speaker itself? If the wires are exposed then they may be grounded, right?  How do i know if they are cross-connected?  Sorry, but I want to be sure of the fix. Jason Smith
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Followup To
Question -
I have a Kenwood KDC-116s car stereo/cd player. When I play the music pretty load for a period of time, the volume will lower and will not increase no matter how high i raise it. this problem does not seem to happen when the radio is kept at a moderate level. Now i am not maxing out the volume button.  When this happens, I will switch to radio and nothing improves, I can still barely here the music. When i turn the radio off and wait a few minutes the music can be heard fine like nothing was wrong, but if I raise the volume again, it takes a much shorter time to have the volume lowered. I don't have any external amps with it. What could be causing this and what can I do about it?
Answer -
jason,
Most likely you have one or more of the speaker wires crossed connected. When you have the speaker wires crossed connected or if you have speakers that have lower impedance(ohms) connected to the stereo, it will cause the amps in the stereo to over heat and shut down. Check the speaker wires to make sure that none are cross connected or grounded out.]

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net

Answer
Jason,
Sometimes people installing stereos themselves will connect one of the speaker return lines to the wrong speaker or they may connect two return lines together. Most high powered stereos will have speaker feeds (+) and return lines (-) none of these wires can be connected to any other wire except to the required speaker, ie-rt front (+) and rt front(-)to the right front speaker only! If the output impedance of the stereo requires 8 ohms for each speaker you cannot connect the speaker lines to 4 ohm speakers. Also none of the feeds and returns can be grounded to the radio case or chassis of the vehicle or the amps will fail or shut down due to over heating.


TOM,
T&D ELECTRONICS
tdeser@zoominternet.net