Originally Posted by shadyJ
I'm know I'm going to take flak for this, but I think the VTF3 will have more oomph than the PB12.
At the risk of being branded a fanboi, I'd guess a significant reason for this is the limiter of the PB12.
Looking at the basic CEA2010 results, from 20Hz to 125Hz, the PB12 averages 107dB of output and 6.4% THD+N. With 2 ports open, the EX manages averages of 110.9dB and 13.13% THD+N. With 1 port open, the EX manages 109.9dB and 14.3% THD+N.
Looking at the maximum drive sine sweeps vs distortion, you see a similar pattern: in its maximum sweep (110dB level), the PB12 sees a maximum distortion level of a tad over 10% from 20Hz to 125Hz right around 25Hz. The EX with 1 port open peaks over 20% around the same spot in its 110dB sweep; with both ports open, distortion goes off the chart as the EX approaches 20Hz on the 113dB sweep, and exceeds 25% at 20Hz on the 110dB sweep.
Of course, if you look at the lower drive levels, ie the 105dB and 100dB marks, the PB12 performs quite well versus the EX. In the 105dB drive test, the PB12 stays under 5%THD from 20Hz to 125Hz. The EX cannot manage that little feat under either mode (1 port or 2 ports open) on the 100dB sweep!