I have a '91 300E. I installed a top SONY ES CD head unit with a 10 CD changer in the trunk.

In addition, I have 4-channel 400 watt Blue Thunder amp. in the trunk too. The amp. has a direct power link to the battery. The amp. is linked only to the two rear and the two door speakers. The front one's go only on the headunit.

The MB has the delux speaker option. The stock amp in the rear (is that the only one?) has been bypassed.

I have two problems:

1. Varying engine whine out of only the rear speakers--HELP;

2. If playing the sterio high for more than 1 hour, the amp overheats and shuts off. My thinking is that the ohm level is too low on the front speakers and that over works the amp. Do these door speakers have an amp built-in the door unit? How can I fix this????!!

Neither the whine nor amp shut-off is cool or impressive to the ladies. PLEASE HELP ME!! My sanity is at stake!

Esquire
HELP