Robert, I have lots of experience working on 107's and since you happen to be in San Diego then you should stop by my shop and we can talk about your options! Here is a pic of a 107 rear speaker install.. Why did you install 3.5 in speakers in the front? The location handles a 4in perfectly and they sound @ 50% better.
Scott@lajollaaudio 858-581-6545
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The Mercedes Specialists Since 1986
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