I bought this sub brand new and installed it in a custom built box that I made myself. It sounded great but the box I built was a little too big for just the one sub so I decided to change and go with 2 jlaudio w3's which was more appropriate for the box size. I didn't want to build another box and it was easier to do this. This sub is in like new condition and was used for maybe 2 weeks just to and from work. This sub is MASSIVE for a 10" subwoofer. it is almost 40lbs and sounds the best out of a lot of subs I have heard. Just check the user reviews for this sub, it is worth the money. I am willing to get rid of it for a cheap price compared to what I paid because it is just sitting around at my house. I have the original box and will be shipped with it.
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| Free Air Resonance (Fs):
|
30.6 Hz |
| Electrical “Q” (Qes):
|
0.578 |
| Mechanical “Q” (Qms):
|
7.647 |
| Total Speaker “Q”
(Qts): |
0.537 |
| Equivalent Compliance (Vas):
|
1.28 cu. ft. / 36.1 liters |
| One-Way, Linear Excursion (Xmax)*:
|
0.9 in. / 23 mm |
| Reference Efficiency (no):
|
0.171% |
| Efficiency (1W/1m)**:
|
84.3 dB SPL |
| Effective Piston Area (Sd):
|
59.8 sq. in. / 0.0386 sq. m. |
| DC Resistance (Re):
|
2.75 ohm |
| Nominal Impedance (Znom):
|
3 ohm |
| Thermal Power Handling (Pt):
|
750W |
| Driver Displacement:
|
0.09 cu. ft. / 2.5 liters |
| Net Weight: |
30 lbs. / 13.6 kg
|
Reviews of W7 Subwoofer Drivers:
“Simply put, the JL Audio 8W7 is the best damn 8-inch subwoofer ever made.”
“...if you're looking for big audiophile sound in a package that
requires a small amount of power and space, the JL Audio 8W7 isn't a
good choice, it's the only choice.”
– Paul Sonoda, Car Sound and Performance, June 2004
"Astonishing engineering. This speaker is the cleanest, tightest, most accurate thing I've ever gotten (excited about)."
"Meet the woofer they will all be measured against… This is the
most magnificent piece of acoustic engineering I've ever seen in my
entire life."
"Fast Cars Rating:
10" (out of 10)
"…this speaker will do cataclysmic wave fronts — that happen at
the front of the bass hit, something that is utterly profound."
– Fast Cars (UK) – Spring, 2002…on the 10W7
"You'll be amazed at the sound produced — it's smooth, deep and
musical but can also be played to hurt… You've simply got to hear the
new W7…"
"You'll need to buy two or even three subs of a similar size to
make the same (output) and you probably won't have room for them."
– Redline (UK), March, 2002
"Five Stars" (out of five)
"This gives an all round performance of such high quality on every
level that bettering it will be very hard to achieve."
"The reward for this entire endeavour comes in the audition. Bass
is tight, fast and musical at whatever sound level you choose. It
really does pack the punch and easily shakes the walls, but never
sounds out of control."
"If you want quality and quantity and have the ancillaries to
support it, the 10W7 or its bigger brothers will take you as close as
it currently gets to ultimate bass."
– Peter Hawkins, Total Car Audio (UK), April/May 2002
"The 12W7-3 delivers a very impressive sense of power that's
absolutely addictive on this type of material." (Jennifer Warnes'
"Ain't no cure for love")
"It's a totally seductive and completely absorbing engulfment in bass."
"So, what do we have here? We have an extremely impressive technological tour de force, that's what."
"The 12W7-3 has more peak-to-peak linear suspension travel than
any subwoofer I've tested so far (Xsus of more than 3 inches). The
motor also has more stroke than any other subwoofer I've tested (Xmag
of 26.3 mm, which is over 2 inches peak-to-peak).
– Tom Nousaine, Mobile Entertainment (USA), April/May 2002
"The new subwoofer reference"
"Listening to recordings of acoustic bass material leaves us with
no wishes for improved reproduction and large organ pipe notes reveal a
low bass that could not possibly be any fuller. The W7 reproduces
rock and jazz with merciless precision, bass drums have the correct
size and perfect impact, and these qualities are not diminished as
volume is increased. Hard techno beat attacks really bring the W7's
special dynamic qualities to light, even fat, brutal synthesized bass
blasts cannot exceed this woofer's reserve capabilities… A
"Killerwoofer"."
"The W7 is a woofer which has it all. Not only are its ingenious
technical solutions impressive, but also its sonic abilities which
leave no desire unfulfilled. Without exaggeration, one can call the W7
one of the best woofers of all times."
"…the W7 is made for people who cannot escape the fascination of a truly exceptional loudspeaker."
– Car&HiFi, March/April 2002 (Germany)