There is just no way a speaker with a 8" woofer is going to produce louder bass than a speaker with a 15" woofer. And as far as specs go, this comes straight from the DT website:
Freq. Response: 17 Hz – 30 kHz
Nominal Impedance: Compatible with 8 ohms
Rec. Assoc. Amp.: 20 – 250 Watts/channel
Driver Complement:
– Two 4-1/2" high definition cast-magnesium basket polymer upper bass/midrange drivers.
– Two 1" pure aluminum dome tweeters with silk surrounds.
– One 8" long-throw subwoofer coupled to two 8" infrasonic radiators.
Efficiency: 92 dB
Now lets look at this.
1) The frequency response is listed the same way as CV. My guess is +/-6dB.
2) There is no way a 8" woofer is going to produce a
usable 17Hz.
3) The mids are defined as "
high definition." Does this mean they work well with BR players, or they work well with HDTV?

4) They are also defined as bass drivers.

5) I have a hard time believing a 8" woofer will produce a usable 17Hz. I don't have a hard time believing a 15" woofer will produce a usable 26Hz.
1) Your GUESS is that it is +/-6dB? Your GUESS? My guess is that it is the OVERALL frequency response! This could be +/-30dB or +/-50dB unless they ACTUALLY SAY otherwise WITHOUT GUESSING! DefTech has the same issues on their website, which lists the OVERALL F.R. You have to contact them and get the actual anechoic chamber F.R., which sucks.
2) Okay, Zumbo, you cannot compare a POWERED SUBWOOFER with GAIN CONTROL to a PASSIVE Woofer!!!
Zumbo, you do know the difference between a "woofer" and a "SUBwoofer", don't you? Please tell me you do!!! A SUBwoofer goes LOWER than a woofer, hence the word SUB!
Let me give you another example. Take the NHT Classic Four tower speaker. It actually comes with a 10" SUBwoofer, not just a woofer. BUT, unless you ADD an Amplifier to this SUBwoofer (mono block amp, etc.), it is only a Passive SUBwoofer. If you look at the actual frequency response, it is about 40Hz-20kHz WITHOUT the ADDITIONAL power amp driving the SUBwoofer. But, when you add the additional monoblock amp to make the SUBwoofer a POWERED SUBwoofer, the frequency response is now 27Hz-20kHz.
3) "High Definition" means that they are made of high quality material and standards.
4) The "Midrange/Upper Bass Driver" means that the driver is capable of producing the Midrange and Upper Bass Frequencies.
5) The frequency listed on the Def Tech website is the "overall" frequency response, which I admit is ridiculous. DefTech needs to get with the program and post the +/-3dB on & off-axis response along with the graphs. The Acutual anechoic chamber of the BP7006 is 29Hz-20kHz +/-3dB @ 90dB w/m, with the microphone @ 1 meter away from the SUBwoofer driver.
DefTech says the BP10Bs have an anechoic chamber response of 30Hz-20kHz +/-3dB, but Julian Hirsch/Stereo Reivew measured 25Hz-20kHz +/-3dB and 20Hz-20kHz +/-6dB.
Anyway, so what kind of speakers and system are you using now?
Hey, Zumbo, sorry if I'm making you mad.
Peace, man!
