So I found some time to work on this install recently and so far so bad.

My new component speakers (2-way Dynaudio 242GT 6.5" via Boston GT40 bridged (140w-190w per side) sound *horrible*. So bad that at first I thought maybe I had bought counterfeits (yes, I bought them on ebay, but from a seller with >9000 sales and 100% positive feedback).

But I think it may just be a particular frequency (or frequency range) that gets super excited and just gets way too loud and flabby, almost in a positive feedback loop or something. It generates some strange pressure system that makes my ears feel like I'm going up a mountain or diving under water - big pressure shift.

What I don't understand is that if there is something in the car (car door most likely) that gets super excited and amplifies a particular frequency range, I would have expected it to happen no matter what driver i had in the door. it didn't happen in my old car (same model) with some boston 65SL components and it didn't in this car with the stock 6" woofers in the door.

Anyway, not too sure how to proceed. Fiddling with the base/mid/treble controls allows me to minimize its effects (-6 on the base) but at the cost of most of the base response so maybe I need an equalizer so that I can really fine tune the frequency adjustments?

Any tips greatly appreciated.

Note: If I had the extra funds right now I would take this to the experts, but it's just not in the budget. I have a few hours a weekend to chip away at it so that's what I'll have to do. *Good* Professional installers have all my respect - this game isn't easy!