Just picked up a used SVT 610HLF yesterday. It seems to be in really good shape. Got it from the original owner who thinks he bought it around '05. A few imperfections in the tolex but under the grill looks immaculate! As I'm coming from an 810E, of course I have a question about the horn. I plugged my setup in (Fender Standard Jazz / Sunn 1200s / no pedals). I have used it many times with with the 610 at shows where it was the backline cab and it has sounded amazing... better than the 810 even, which is why I picked it up. My question is... with a tube driven sound (not a super intense one by any means), the amp not turned up to stage volume and the horn set to -4db, would it be normal for the grime in the high end to be punching through the 6 drivers? Honestly, my first reaction was "uh oh is there something wrong with the horn/crossover?" but as I brought the master up, the drivers buried it and made it sound more at home. The previous owner showed it to me with an SVT 4-Pro plugged in and it sounded great. Maybe I was worrying over nothing?