I am starting to get desperate on how to solve this which is why I get to you guys now!
I taped a show almost 3 weeks ago and when editing afterwards I noticed that the recording lacked lows everywhere (kick drum being almost gone). I was thinking the mics just didn't catch up much bass from the show. However when I taped another show 1 1/2 weeks later it was the exact same thing and the show had many lows coming from the guitars and bass so I started to get suspicious. I tried different things in Audition, including phases correcton because it showed 0 balance at the Phases analysis. Then I thought of cutting one channel to see if anything changes and I was surprised to hear that the playback is very fine as usual, on both channels when playing them seperate. Putting one mono channel back to two channels is not a problem either, the same great sound comes out, however if the two channels are playing back together, it is the same odd no lows and way too many highs thing. I tried playbacking on 2 different notebooks with Realtek + Conexant HD onboard chips, almost 0 difference.
My rig is as follows: AT853 w/ lowsensmod > SP-SB11 (no bass roll off) > Sony PCM-M10 (24bit/48kHz)
At first I was thinking that something went wrong with the M10 and saving the recorded signals but I highly doubt that now after I just tried recording deeper sounds with different setups which would be the rig listed above, then minus the battery box into the M10. I did the same going into the Mic In of one of the 2 notebooks (with and without battery box) and it was the exact same. When playing back one mono channel, the outcome is great as usual, when playing back both channels, the nightmare remains
The last show I taped before that first weird recording happened was less than 2 weeks prior. Next show I plan to tape is in almost 2 weeks so I hope I can find a fairly fast solution.
I hope anyone here can help out.
Thanks in advance