I gigged a Schroeder 610L for more than three years. We all hear things, and describe things, differently so keep in mind that my ears tend to be off compared to many on this board.
I think the 610L was fairly evenly voiced, at least there was no low mid hump. I found it to be very mid-mid heavy (400-600hz or so), and there was a boxy quality to the mids that was hard to eq away IMO. I don't think that cab has any lining at all, which may explain that. It handled everything I throwed at it, no sweat. Loud as heck.
Probably too small box for 6 10s, and besides being loud it kind of defeats the purpose of Schroeder cabs somewhat, ie small, light and loud.
Never had a problem with it, very light for a 6x10. I sold it mainly to get an even lighter cab, and I missed something in the mids. Not that there wasn't enough mids, but there is a certain calmness (is that a word?) I like that just wasn't there IMO.
Jorg S. was great, excellent communication.
Great cab for loud, agressive tone!