I have the 2B's running through a B&K ST-202 and my Pre is a CX-1000. I was listening to some Dire Straits today and noticed some distortion at about the 10 o'clock position on the volume dial on the CX. I have heard some slight distortion at higher levels but cut it back right away...was just testing the waters so to speak..this only happened once and I don't listen to these at those levels anyway.
At the time of the distortion I was using a 1200 MK5 TT and a DL-301 Mk2 cart. Here is a vid of the distortion and i'm curious as what to check. I have played my RT800's much louder than this with no distortion...to the point of pain. These are the original mid-drivers but have performed a TL mod recently....about 300 hours on the caps.
The 2B's sound great, I made sure everything is connected correctly when I replaced the caps...sure as heck hope so. Just seems to be excessive excursion on the woofers for the given volume.