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Originally Posted by MZL
+1 to a "front stage" car audio set up for exactly the reasons that you mention. My only comment is that the approach works best with high quality front speakers & a moderate subwoofer. In stock systems w/o subs, the rear speakers often produce more bass or since the high frequencies are off axis, seem like they have more bass. Hence, folks often "need to" use way too much rear fill to make stock systems sound full range.
Moving cars are certainly less than quiet sound rooms. Tires are a huge factor & simple way to combat excess road noise. Dynamat type products & stiffening the mounting locations for front door speakers can make major improvements to system performance.
I endorse these recommendations heartily. If you can feel the vibration from your door speakers in door, inside or out, you are losing sound quality as random and/or cancelling vibration. Think of the rigidity of the best home box speakers. You may not be able to match that standard, but the closer you get, the better the sound. In the 80s I used a dynamat type product and fiberglass fill in front doors, to advantage. There are probably better techniques, today.
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Absolutely -- even systems that are modest in scope (i.e., budget) can sound "good" with money spent in the right place - sound deadening and a good install is a multiplier of the quality you'll get from well-spent money. There are a few good articles on proper sound deadening - which I would say consist of using something like dynamat (really anything that can reduce resonance/vibration), a closed cell foam (think of something like a mattress pad), and a layer of mass loaded vinyl (a lead sheet, or something to produce the same effect). Basically, you want to be able to reduce vibration, rattles, resonance - and since you can't go in and fuse these kinds of materials to the chassis and other body panels, you have to add it on. If you've had the pleasure of driving a Lexus LS or other quiet, solid luxury car, that's the aim (well, to be honest, I'd probably invest in some deadening to an already quiet car).
Whatever you can do to reduce noise intruding into the cabin, the more you will hear your music and won't need to turn the volume up to counter the noise!
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