I have a Sunn SB200 that I have been crankin'through since I bought it new back in 1985. Problem is, the single 15" stock factory speaker is shot. I would like any info or input as to what to replace it with.I was thinking either a JBL or Peavy Black Widow. I play a G&L L2000e with no effects. RotoSound strings. Simple blues stuff. Any help out there? Norm?