Has anyone else installed a Eminence 820H in their Champ 600? I bought one a couple of months ago to replace a Jensen c8r in a new cabinet I had built for mine. The circuit is pretty much stock except for new tubes (I have tried JJ and Tungsol 12ax7's, and GE and JJ 6v6's) and I found it hard to warm up to the tone. Seems to lack a lot of the brights (although lows are very strong) when playing my Tele with Fender OV 52 pickups. When dimed it sounds great but it sounds muddier when playing at cleaner mid volumes even with bridge pickup . I'll admit the c8r may be a tad bit too bright but that can be tamed with the guitar tone knob. I guess my question is if the darker tones are characteristic with the 820h in Champ 600's ? I realize you can use EQ pedals but I'm pretty much a plug and play player. Any other users have experience with this amp and speaker ?