I appreciate the all the comments. I agree with Jim that we could get into an endless discussion about how graphs should influence a purchase decision. So we'll just make some final comments.
Depending on the method of measurement, the results will be different. Let's let Jim get his hands on the Speedwoofer and see what he has to say.
As I mentioned above, we came up with our specs based on outdoor measurements. The one in spyboy's post came from a close mic measurement. Then the question is, how was the SVS measured and who supplied it? Also, I don't know how the crossover was set during testing, but our subwoofer absolutely does not roll off above 80 Hz (that would be ridiculous).
The question was raised about what makes our subwoofer worth the price. After all, you can certainly get a 12 woofer in a sub with a great looking response on paper for the same or less. When we designed our sub, our goal was speed. We wanted to have a sub that didn't have the overhang and general sloppyness of the ones we experienced (and we listened to a lot of them). We chose an enclosure size that we felt would be acceptable to most. In that particular size, a 10 gave us the best combination of bass and detail. We could have used a 12 and it wouldn't have cost us much more, but we achieved the best performance with a 10. The fact that it's a 10 shouldn't be the determining factor for the price. Some people will pay more for a REL 10 sub or $2,400 for a JL Audio 10 sub.
So, what makes ours a great deal for the price (other than the sound, which we've covered)? Here are a few items:
1. 375 Watt Analog Class A/B amplifier. This is an honest RMS rating (actually it puts our closer to 400 watts). This amplifier costs considerably more than the Class D amplifiers that are used in the other subs. It also weighs a lot more and we pay for free shipping.
2. Wireless remote control of both volume and crossover frequency. Our customers tell us that this is huge. Different sources sometime require adjusting the sub's output. Who likes to continually get it and walk to the back of their sub? When they do, they are making an adjustment they should be making from their listening position. Our wireless remote sensor is not built into the subwoofer like most. That's because if you place the sub out of sight, the remote won't work. Instead we have a box that has the remote sensor and motorized controls for both frequency and volume. The volume knobs have blue LEDs so you can see the levels from across the room. The box attaches to the sub by a black 6 foot cat 5 cable (included). So you can place the sub anywhere. You just need to be able to see the little box.
3. The enclosure is finished in high gloss black piano. This is very labor intensive. If we chose to use just a wood finish or vinyl, we could have saved a lot. It is internally braced. The enclosure is gorgeous and comes with 2 sets of spikes for both carpet and hard floors.
4. Heavy duty woofer with cast aluminum frame and large magnet structure.
Even though some comparably-priced subwoofers may have some of these features, I haven't seen one that has all of them. In the end, it's the sound that counts. We've been very fortunate to have crossed paths with many audiophiles and satisfied home theater fans who agree with our point of view. The fact that we provide a risk-free guarantee where it costs the customer nothing to try our products (we even pay return shipping) and we don't get returns, to us speaks the loudest.
Thanks for reading all of this.