Originally Posted By arbitrageur


I am currently operating under the impression that the EQ is applied to each source channel and then the crossover is applied.


Correct. EQ is applied to each channel, then the crossovers are applied.

Originally Posted By arbitrageur


That means that a +3db bump at 30hz on the front left channel will be passed to the sub if using a crossover (small speaker setting), but a +3db bump at 30hz on the sub EQ will only be applied to the LFE channel source.



Correct.

Originally Posted By arbitrageur


I think "Sub Trim" on the "LFE Trim" menu is for managing the sub gain in modes where channels are summed below the crossover, as occurs with All Channel Stereo and with the "Bass Augmentation" modes.


Sub trim, in the LFE Trim menu, can be somewhat redundant as it affects the whole subwoofer channel - this allows you to use your main subwoofer channel trim to calibrate the system properly and then tweak for your personal tastes via the sub trim in the LFE Trim menu. This way you don't need to remember where the subwoofer trim should be set for proper calibration because you've tweaked it so many times for different content or sources. Assuming the system was channel balanced, you can just adjust the setting in the LFE Trim any time you wish and when you want to go back to calibrated, you would just zero it out.