as a fellow Theater 4 owner, mightI ask how much R13 you had in your speakers originally and what you ended up with? I varied from Wayne's directions and used heavy felt carpet underlayment as a base for 1 1/2" of dacron fiberfill on 3 sides of the cabinet. Although this sounds good to my ears I always have a nagging suspicion that maybe the fiberglass would sound better. I have an insideous tweaker's affliction!

Glad yours are sounding good now - they're great loudspeakers and mate well with the Paramours!

Garland