MI> It's very rare to find a deck that really, truly has POWERFUL,
 MI> QUALITY internal amps.  There are some amps rated 30x2 that are
You mean they EXIST?!  Wow.. :)
 MI> larger than a deck that claims tostuff 30x4 in along with all the
 MI> radio, tape and CD hardware.
Hm.. looked at the manual for my deck (Clarion DRB4275 CD head unit)... it 
claims 30x4 PEAK, 18x4 RMS, at 1% THD :(  I thought my amp had high 
distortion (the amps I've been looking at claim anywhere from 0.1% down to 
0.01% THD)
 MI> Yes they would, although they're generally not recommended for
 MI> high-end systems; their shape is far from "friendly" when it comes to
 MI> accurate audio reproduction.  6x9s are an abomination designed to
 MI> squeeze more speaker into wide but shallow rear decks of most cars in
Oddly.. a lot of people keep trying to talk me into putting 6x9's in for rear 
fill, and I keep saying "What are you, crazy?" and give them basically the 
same explanation.. and they call me crazy. .
 MI> the 60s and 70s.  For a quality system, you're likely going to be
 MI> doing a custom mounting job anyway, rather than just bolting them
Not ALWAYS.  In mine, I have Alpine 6.5's bolted into the factory (door) 
locations.  Though not really by choice :)  I might wind up making some 
cutouts in the front bottom corners of the doors for them so they'd be by the 
floor.  Though I do have my tweeters mounted on the kickpanels.
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