I have the same speakers but I'm running them w/o an amp.

 

Yep- no mods. Took stock speakers out put new Polk's in. Yes they sound much better(more efficient). The only "mod" I made was to take the metal bracket off the back of the tweeter and glue it to the new Polk tweeter.

 

I highly recommend getting a quality aftermarket HU.
You're not getting the full quality out of the speakers w/ stock radio.
You'll be surprised what an aftermarket HU could do even w/ stock speakers.
Like Woodson said, check out the Electronics forum.
Tons of great information there.

Dan

 

I'm very happy with my Polk Db components, though I had to do a little trimming not a big deal.

 

kenwood head unit and alpine type r speakers; this is such an improvement over oem that i don't think i'll go with the 100 watt amp i was thinking of installing

 

the sensitivity should be an issue if youre using the stock head unit and no amplifier. sensitivity measures the dB output per Watt input, and without a separate amp, it will really affect what sounds best.

if you're not amplifying it, youll get more sound out of the infinity reference or a comparable product because it has a very high sensitivity.

if you are amplfying it, speakers like high end polks sound great. but to me, high end polks on the factory system would sound underpowered. i don't know if polk has a higher sensitivity line of component speakers. crutchfield usually has those specs.

 

they upgraded the stereo in this car from the factory? boy it must have been real crap originally. so i just put rear speakers in and it is better, behind the seats, inthe little air vents,there is room behind them for speakers.

 

Alpine head, Alpine speakers, plus amp

 

I also went with the Alpine Type-R components. Had to do major surgery on the stock baskets to make them fit...the magnets were huge. You can do anything with a dremel. It's almost as fantastic as duct tape. I can actually here music with the top down, yea.

 

Polk does - they are called the Db series(aptly named) They are 92db efficiency rating(similar to the Infinity speakers). The Db's are also quite reasonable. I got my 6500 components for $100. The new version is the 6501 and goes for around $120/set on EBay.