on the su, I moved the crossover pretty low and the volume approximately mid way.
then I put the balance to 2 REAR. I put my bass to +2, my mid at 1.5khz and +2, my treble at 15khz and +6, my NF (NF = subwoofer) at -5 although I change this setting almost all the time as not all songs have the same bass level.
To change these settings press and hold the top leftmost "Q" button, then use the +/- folder (far right) keys to choose what setting to modify and the >>/<< buttons right above it to chang the value of that setting. press the Q button once to exit that mode.
I listen to house/prog/trance too and with these settings it's pretty good, although remember that crappy mp3s produce crappy sound.
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enry, protegemp3.com webmaster