Originally Posted by mastermaybe
I don't think anyone has a problem with anyone questioning anything. Perhaps its the tone, tenacity, and veracity of the questioning that gets some folks perturbed.
For instance: until someone tests a Cap GP and finds otherwise, I do not find much reason to doubt the 127db @ 1 meter 20hz spec.
mojomike hit 126+ in his room with less than 1/5th of the rated peak output of the powered cap. That's less than 1/5, gang.
Now granted, this was indoors- on content, not a sine wave, but after adjusting for 5 times the power and dropping out room gain, it would appear (to me anyway) that the spec seems viable, at this point.
Spending a lot of time debating what's sure to be, at most, a few db's seems daft to me, but it's not my forum or time, so there you go.
If I remember correctly, Mike's Cap showed a 10dB drop from 60Hz to 20Hz in-room FR (similar to the un-EQd response JP posted, I believe 12dB down for 15Hz tune).
I believe a PB13 has built-in EQ for a flat response (-3dB at tune).
The Cap with this FR will show a strong advantage playing program material with significant 60Hz content, such as FOTP Mike used for that 126dB reading:
Here's the PB's 15Hz tune FR:
And Mike's Cap:
And Un-EQd FR from Jeff (see red line for 15Hz tune like Mike has):