The new alpine type-s subs are quit shallow. Mounting depth 4.3 inches and they handle 300 watts rms.
check em out

http://www.alpine-usa.com/US-en/prod...g=en&tab=F

 

I'm pushing about 400 rms myself with the rockford p3 shallow mount and a rockford t500 amp. But they don't sound the greatest with rap which is alright since i dont listen to it that much. Although techno sounds awesome for some reason, go figure. Loud enough anyway that i really have to invest in some dynomat. On a seperate note looking for some good component speakers. Anyone have a suggestion ?
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I found this box
Sub Box

 

i absolutely LOVE polk momo, mb quartz, and boston acoustics. those 3 are the top 3. also, with an amp, theres this italian amp, best amp ever made (not only my opinion, but many, many car audio gurus's as well), i forgot the name. but its fairly pricey. otherwise, id stick with a phoenix gold or an MTX amp. polk momo, mb quartz, and boston acoustics is the way to go. jl absolutley SUCKS *** at door speakers. rockford is also pretty good. i like alpine too. pioneer is def. not a sub or speaker id go for. infinity is good as well!

 

anyone looking for any kind of car stereo should go to onlinecarstereo.com. they have any thing and everything you need at an average of 45% off MSRP.

syn65 look into some boston acoustics

 

I have a 10" JL audio W3 and I didn't have to do any mods! Just the custom box and amp under the drivers seat and it sounds really good!! But it is installed in my 2005 and I am not sure the difference between it and a 2004!

 

i like crutchfield.com

crutchfield has great customer service and good rates with warranties too. just return if borken. you get one back in exchange.

 

I got 2 10's under my 02 back seat,which sound good,the guy at the stereo shop said to put foam inside the box,
not sure why or what it will do.Mine sounds good so im not gonna mess with it

 

I have 2 Alpine Type Rs subs with the custom fiberglass boxes made for under the back seat and they sound really good, plus I didnt have to raise the seat.

 

Do you have 12's or 10's becuase i have 1 type R 12" in 2cu ft ported box that replaced the rear driver side seat. My plans are to get another type r and build a 4cu ft box firing towards the driver seat. My one sub right now makes every interior panel rattle so i want another one to make it so i can't hear the rattling. haha