Sorry, there are no reviews for this products. Below are reviews for
similar products.
db212-2 
"The db212-2 is easily the best-looking
subwoofer enclosure I have ever seen."
"...the attention to detail in [the bass port] execution is the best
I have seen to date."
"With bass-heavy tracks from Chemical Brothers and
Moby, the bass was loud and aggressive. The
enclosure, which is relatively small for a pair of
12s, excels at producing mirror-shaking bass."
"It cranked out an incredible 136.33dB in my WRX. That’s
hands down the loudest subwoofer enclosure
I’ve ever had in my car."
"I won’t hold back in saying that I am totally
impressed with the design and construction of
this enclosure. It is easily the best I have ever
come across. The intricate and detailed interior
treatment and even the simple fact that the vent
is on the same plane as the woofers really adds
to the value. The enclosure works great and the
proof is in its ability to get loud. Very loud.
If cruising the streets with the bass cranked
is your game but you aren’t made of money,
then check out the Polk Audio db212 enclosure.
It’s an impressive, great-looking bass system."
Dave MacKinnon
Performance Auto & Sound magazine
2005 Annual Issue
[Click here to see the full review]
"No doubt about it, the [db212-2] enclosure looks awesome."
"With only 1 Watt into 2 ohms, the db212-2 delivered an impressive 103.9 dB at 30Hz. With 500 Watts supplied, the db212-2 delivered a peak SPL of 127.4 at 50Hz."
"From 30Hz on up the system was very impressive."
"The woofers did not sound strained in any of my tests-a result of excellent enclosure design by Polk Audio....[who] tuned the db212-2 for great sound quality. The bass ounded smmoth and well controlled. A really well built, pre-built enclosure."
Paul Sonoda
Car Sound & Performance
September 2005
[Click here to see the full review]
SR104 
"...this woofer hit so hard I honestly thought someone had kicked the back of my seat - is that hard enough for you?"
"The SR104 reproduced the bass line with accurate detail on a level I rarely get to experience. Not only is it lightening fast and detaled, but it also offers excellent low frequency extension."
"[the SR104] offered a sense of warmth and size that sounded more like a 15-inch subwoofer."
"a truly stunning sounding subwoofer."
Dave MacKinnon
Performance Auto & Sound
Annual 2006
http://www.polkaudio.com/downloads/sr_review.pdf[Click here to see the full review]
SR104-DVC 
"...this woofer hit so hard I honestly thought someone had kicked the back of my seat - is that hard enough for you?"
"The SR104 reproduced the bass line with accurate detail on a level I rarely get to experience. Not only is it lightening fast and detaled, but it also offers excellent low frequency extension."
"[the SR104] offered a sense of warmth and size that sounded more like a 15-inch subwoofer."
"a truly stunning sounding subwoofer."
Dave MacKinnon
Performance Auto & Sound
Annual 2006
http://www.polkaudio.com/downloads/sr_review.pdf[Click here to see the full review]
