to @wswright20, @jl35, & @fastfreight
Thanks guys. very excited. my friend who i am getting them from is a reviewer and super knowledgeable. he played for 40 years with the Philadelphia orc. and has a great and keen sense of hearing. plus he has a beautiful system based on Quad speakers. this will be my fourth generation of REL speakers (S3, S5 /SHO, S812, and now the new ones). I suspect (famous last words) that these will be my end game subs :).

