Apologies if this has already been posted. I fail at Google Anyway, I understand that when you combine speakers of the same type and spec there is ~3 dB volume increase and also when you double wattage. However, when you do this coupling how does this affect the low end response? I mean lets say we have two cabs. One is a 210, the other is a 112. Both are using he repsective Eminence DLII speakers. The DLII 2512 has a power handling of 250 watts RMS and 99.9 dB sensitivity, frequency response of 48 Hz to 4 kHZ. The DLII 2510 can also handle 250 watts RMS, but has a sensitivity of 97.3 dB and a frequency response of 65 Hz to 4 kHz (all info from usspeaker.com). On paper the DL 2512 would seem the way to go, if we were talking about single speakers, but when you combing the 2 10's the sensitivity goes up to ~100 dB and power handling to 500 watts RMS. Does the low frequency response stay the same? My gut tells me, no, but I don't have the technical background to know why.