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75 db calibration

post #1 of 5
Thread Starter 
Hi all

I rely on Pioneer's MCACC to calibrate speakers, including level matching. I see the channel levels are around 0 & I usually listen at -25 to -30 db in the master volume. However, I see threads where it's advised to keep the master volume at 0 dB & then adjust individual channel levels to make it 75 ( or 85 ) all around. People would then listen at -5 to -15 dB below reference.

Is there any difference between the two? Let's say channel level at -10 and volume at -15 vs channel level at 0 & volume at -25

Thanks

Jay
post #2 of 5
Thread Starter 
no comments yet?
post #3 of 5
75 dB calibration is only guarateed to correspond to 0 dB on the volume knob for THX certified equipment. For all other equipment, 75 dB calibration may occur at 0 dB or some other volume setting selected by the manufacturer. Also, some AVRs require 0 dB on the volume knob to correspond to 75 dB for certain signal processing functions. The bottom line is, for best performance, you should calibrate your equipment as per the manufacturer's instruction.
post #4 of 5
Thread Starter 
Thanks. I have never ever put the volume knob at 0 dB - however, I have set up speakers using MCACC, which is , I believe, Pioneer's recommended way of speaker calibration
post #5 of 5
I think you are reading threads that are meant for speaker level matching while not using the AVRs auto setup. For these, folks would be using a SPL meter to level each speaker. You should be fine using the instructions of the Pioneer.
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