You should follow the 10 dB warning, as the MiniDSP has a hard limit of +/-12 dB/filter. Fixable issues over 10 dB are also very very rare. A few things you should do:
- Only use the same bands between speaker pairs (front, side, rear), as this keeps them completely in phase for a symmetrical room, making it possible to have a perfect virtual center for stereo or multi ch stereo music.
- Don't care about low frequency extension, mains don't have that signal often anyway. This will free up filters for better use.
- Don't use the EQ to correct gains. Always use auto target selection, measure again after EQ, and set gains by displaying all curves.
- Don't trust your AVR or a measuring tape for distances, always align them manually using REW's subwoofer alignment tool or even I have made a single-click multichannel delay calculator. LFE should be 10 dB over mains, but flat for crossover.
- Create a manual crossover whenever possible. This will take the 10 dB responsibility away from the system, which they usually fail.
- If you want the standard sound, use the default curve, otherwise you can test curves quickly with Equalizer APO.
