For sure my subs are very capable there amazing . The concern is 0 is reference on my 80.3 and it sets it past that at + 5 and then it has me lower my subs to a very low setting almost off . Why doesn't audyssesy just have me raise the sub Gains a little more so it doesn't turn the trim level "sub gain" on my pre-pro past reference levels to compensate for it .
Zero on the MASTER VOLUME is reference only AFTER the speakers and subwoofer have been calibrated to , uh, make zero on the master volume reference. SO the calibration on the individual channels (the actual number) just needs to be whatever is right. Different speakers have different sensitivities. And if you sit twice as far from your speakers as another person, they will test up to six dB quieter even if they are the exact same speakers. The calibration needs to be whatever it needs to be.
Setting the sub's own volume control so it is at 75 dB with the particular test sound simply makes it easier for the receiver to dial the subs in to the correct calibration. Nothing more and nothing less. If the sub is calibrated correctly, unless there are unusual circumstances it literally does not matter if the sub channel level is zero, minus ten or plus ten. Makes exactly zero difference. Because you're just trying to get the sub to the "correct" level so that it will be at reference at zero on the master volume Although there are plenty of people who like to get their subs into plus or minus three dB or so on the sub channel, whether they really really need to or not . . .
If your subs happen to have linear volume controls they are exactly as loud at 1/10 volume as the same sub with a log volume control would be at one half. Where the sub's volume controls are set means nothing unless you know an awful lot, not only about that potentiometer, but the gain structure of the sub itself. Differences between SPL in pre-EQ and post EQ conditions typically has a lot to do with the EQ itself. A nice ten or fifteen decibel peak in anarrow range in teh bass will make the subs test much higher without EQ (pre autosetup) than post EQ.
Edited by JHAz - 7/2/13 at 6:56pm