Originally Posted by pdxrealtor
Alright buddy. No problem.
Don is right. IF you mean the channel levels MCACC sets during calibration, then it turned YOUR sub down by that amount because it means your sub volume is too high for the sub to properly match the rest of the channel levels. particularly if this is a large sub, small room or close location situation. If your sub has a volume control, then turn it down a bit and re-run MCACC. Ideally, the sub volume should be set so that the level is near 0.0 dB, plus or minus. This is a preamp level adjustment, no different than all the rest and nothing unique to Pioneer. All systems, including Audyssey, do this. It's called level matching, I think Audyssey calls it level gain matching or something similar
There is no automatic 10 dB cut in the LFE output unless YOU manually set it that way in the LFE/Sub output preset located in the Audio Parameters menu. The factory default setting is 0 dB. you can choose to cut in 5 dB increments if the bass level is too hot in a particular soundtrack.
can't take a specific room-sub-sub location situation and draw a general conclusions about how a system works...
and typical for it to set a -10 dB cut? sorry, no.
I've had various Pioneer Elite AVR's set my 2 subs to -1.5, 0, +0.5, and even -7. It depended on where I set the sub volumes and if I had an external sub EQ in the loop or not
and it also depended on how Pioneer tuned MCACC outputs that particular model. one of my early flagship Elites set my fronts to +8dB, then the SC-09 flagship reduced all levels by 6 dB, and the latest SC-68 also set my fronts to 2 dB but in each case, the relative level differentials between channels stays the same.Edited by ss9001 - 8/5/13 at 4:18am