is the following true? i found this while poking around the SVS site:
Most importantly, from a sonic standpoint, is significantly greater internal enclosure volume than most other subs (yet still in a well proportioned cylinder). This allows us to make our products tremendously efficient. Some subs require equalization to run strong down low, often about 6dBs below 30Hz, sometimes many times more than that! There is nothing wrong with this approach to producing good bass, but it does significantly cut effective amp power. Each 3dB boost of broad-band bass roughly halves the effective power of any given amp. So with a 6dB boost down low, a 500-watt amp acts very much like a 125-watt amp. If you are starting with a 150 watt amp? Well, you can do the math. This explains why many commercial subs need megawatts to perform well. Again, our subs run very flat to their tuning points with no equalization, (though it can be added if you want to tweak your SVS's too). In short, if you use a 300-watt amp with a CS sub you get 300 watts used, with no power spent in an effort to flatten or lower the response of the sub. Looking at this another way, if you own a sub using this much equalization you must push its driver with a full 500 watts of power (with the accompanying heat and stress on both driver and amp) to equal 125 watts with an SVS design. Needless to say 125-watt amps are relatively inexpensive and plentiful compared to 500 watt ones. And to a limited degree, the more clean power an amp can deliver the greater the bass impact. As little as 100 watts with any of our SVS CS "passive" subwoofers will drive most folks out of a room if you're so inclined! No wonder our 300 watt-ish PCi subs blow HT critics away with so "little" power.
