Thanks to decent room gain, my front l/r manage to hit 32hz -3dB and 26hz -6dB. Using sine waves, I’m able to achieve 107dB @32hz at the mlp with 3.6% THD, 109dB from 40hz-60hz, and 113dB from 60hz-100hz. Above 60hz, THD is 1.3%. My sub is capable of 108dB from 23hz-25hz, 105dB from 28hz-35hz, and 108dB from 40hz-120hz. The main channels generally do not contain content much below 35hz, and the absolute max is is 105dB at reference volume, so I have more than enough headroom.
Considering there is no difference in both frequency response, distortion, and output, is there any reason to set them to small? Seems all that would be doing is adding an additional 6dB of of strain to the sub. Has anybody tested running their mains on large? What were the results?