No bass in (some? all?) games' music about fceugx HOT 2 CLOSED

low-pass filter is disabled in this version, and anyway, low-pass means that 
high
frequencies are cut, but bass are generally low-frequency sounds

maybe this is because lowpass is disabled and high-frequency sounds somehow 
cover
those bass, I don't know

Or this might be due the sound emulation quality, it was 0 (low) before, now is 
set
to 1: this should increase sound emulation accuracy but you never know, some
filtering is probably done as well

anyway, this is far over our head and would require good knowledge of the NES 
sound
chip, best solution is still to provide a way to change the settings upon user 
request

you can try changing the settings in the PC version to see what suits best, I'd 
say
that LowPass enabled and SoundQuality set to max wil provide the most accurate
emulation... with obviously increased CPU requirment

Basically, the sound is as good as it's gonna get. Not much more we can do.