Bill,
00, 05, 55 and 58 all work well, but like Eddie, when I have the occasion to use the L1 Standard, I use 00 and make the adjustments on the PSR-3000 mixing console in the global EQ section.
Good Luck,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)