Originally Posted by MiniHT
Hey RMK!, question for you.. are you saying that you calibrated everything with your processor maxed out at -12dB for your LCR? I just received my JTR shipment and have a feeling I'm going to max it out as well (really, really small room). The problem is that I will be using bare wire to connect the speakers to my Pio AVR and can't use those attenuators to bring down the signal some. The only thing I can really do is to add an external amp with gain control or an amp without gain control and put the attenuators on the RCA cables that would connect to the AVR's pre-outs. I just thought it was bad to have the speakers at whatever the max was on your AVR/Processor. I guess my question is this: If my AVR sets all/some of the speakers at -12dB (which I believe is the max on my AVR) should I do what I just said to get the levels into the "safe" range? I was also thinking I could just raise all of the trim levels the same amount in the AVR into that "safe" range and just have my "reference" at a different -dB. Example: I bump all speaker trim levels up 5dB, now my new "reference" is -5dB instead of 0dB.. 0dB currently being reference on my AVR. I know I quoted you RMK!, but anyone else with a thought or idea would be greatly appreciated. By the way, nothing is hooked up right now, so I don't know for sure if this will be the case but I'm guessing I'll have this problem due to the fact that the MLP is less than ~7ft from the LCR and about 4.5ft from the surrounds!
You basically have it all correct except for a couple of points.
First, the part about having the speakers at the max trim of the AVR doesn't matter if it is the correct trim level. That's only bad if the AVR was really trying to set the trim at -14, but was prevented by the AVR's limits from doing so.
Second, you can correct the reference level as you stated, but you have to know how many dB's you're off reference level trim to know the Master Volume correction to be at reference. For example - and assuming you're using a recent iteration of Audyssey that calibrates to reference - if the room correction sets the trim at -12 dB but the actual trim should be -14 dB, then when raising the trims by 5 dB the new reference level would be -3dB, not -5 dB. The only way to figure out how far off the trims are is to use a calibrated mic and measure the dB level at the listening position after a calibration and see how far off from 75 dB you actually are.Edited by Gooddoc - 9/8/13 at 4:28pm