If you have the luxury of moving your SUB (or SUBs) around the room you should check for the spot with the flattest SUB response for each SUB before tuning overall levels. I recommend experimenting with the built in MC21 tones for the bass region from 20hz to 200hz to check the best blend of main to sub to find the right crossover point and slope. ![]() In theory the same cross over slopes and frequencies should work for both 2.1 and 5.1 but I found that not to be the case. Changing the slopes and crossover region will create different peaks and nulls. You may need to play around with Room Correction Bass redirection crossover slopes and frequencies between stereo and 5.1/7.1 zones to match the characteristics of your main speakers with the Sub(s). You should also turn the SUB AMP volume up on the SUB if LFE level is too low so you don't push MC21 into clipping protection.īaseline LFE meter reading before correction can be upto 10db over your mains without any digital correction (trim) because you can always pull the LFE back down with trim. Set the level on your lowest measured channel so the meter reading is 75db and then use either PEQ offset or Room Correction offset to get the other channels down to match your lowest channel reading on the meter.Īfter Dirac or EQ adjustments you'll need to come back and re-check volume level again to trim channels down to the lowest speaker reading on the meter.įor the 5.1/7.1 zone all channels should read 75db on the meter including the LFE when using the built-in MC21 Volume 5.1or7.1 channel Level Calibration.ĭigital level adjustment should always be down as a preference where possible to avoid clipping further down the signal chain. You want to trim all other channels down to the lowest level channel so you don't introduce clipping. Use the MC21 built-in 5.1/7.1 volume level calibration first on the 7.1 zone and check for the speaker with the lowest level. The 7.1 zone is set for movies and multi-channel Audio. Here's my findings using MC DSP room correction bass management on LFE for 2.1 music and 5.1 music vs 5.1/7.1 Movies in 2 different zones. Maybe I get it wrong, but for me:Ĭrossover -> 200 Hz and Routing -> Move bass to subwoofer (recommended) => no bass 200 Hz and Routing -> Copy bass to subwoofer => bass No crossover (play all frequencies) -> Copy bass to subwoofer => same as 200, which is expected as the bass is copied.Īs I run WASAPI, Windows (Realtek) shouldn't screw anything up, or? I tested both 1) (no upmix + bass management) and 2) (upmix + bass management) according to the Wiki, but the problem with no bass from the subwoofer remains except for the choice "copy bass to subwoofer". ![]() ![]() This is confusing and could be more clear in MC, I think. Subwoofer in Output Format is the "old way" and Room Correction is the "new way". Searching around the forum indicates there is a lot of confusion about what "Output format" and "Room Correction" do with bass management, see and.
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