Hi all, I just found away to add more slam with a full liquid rainbow SQ.
Get some 60's era 6n6p's. The different's is as great as a 6n1p change. I also tried some 6n6p from the 80's and the slam was not there to the same degree. I guess the Red's were making killer tubes in the 60's!
One other thing, this set of 68's I got are 1/4" taller.