A strange issue last night that was easily resolved. I had dropped both my L1's to preset 56 to check sound in new venue. I switched back to 57, but one must not have clicked the entire way.
What was happening was that every few minutes that L1 would automatically go through the soft restart that you get when switch presets. I noticed that the unit wasn't putting out lows anywhere near what it should for 57. So I ticked back down a few and then returned to 57. Bass returned and all was well afterwards.
Just thought I would pass it along in case anybody else runs across it.