Sheep said:
I think he was just showing what the Ultra is capable of. The EP600 didn't perform as well as the Ultra in an Anechoic enviroment.
SheepStar
The SVS was never tested in an anechoic environment by anyone but a gent named "jakeman", who did so at Axiom's headquarters in October.
A true anechoic setting is a VERY difficult one for subwoofer testing.
A lot of guys were taking the tests done by Audioholics on the Axioms subs and comparing them to those done by others on the SVS subs, and making judgements based on that.
The SVS subs were all measured using the groundplane method, @ 2 meters from the acoustical center.
Here is what the EP-600 looks like using the same type of measurement :
Note the 600 remains totally linear @ 100 dB from 18 to 100 Hz.
Here is the one test on an SVS PB12-Ultra/2 by Ed Mullen. These figures represent max output levels from the SVS, again taken @ 2 meters. Note the figures are amp limited to 30 Hz, so it really will not "go louder" at any of those frequencies:
16 Hz: 89.5 dB
18 Hz: 100.7 dB (8.4% THD amp limited)
20 Hz: 102.8 dB (9.4% THD amp limited)
22 Hz: 104.9 dB (7.7% THD amp limited)
25 Hz: 106 dB (6.2% THD amp limited)
30 Hz: 109.5 dB (7.9% THD amp limited)
40 Hz: 113.1 dB
50 Hz: 112.2 dB