I dunno. I've used this amp with nothing but newer speakers(mesa booge
hartke,and sonic) over a 6 year period and I've had really good results.
This is the first speaker I haven't been able to dial in a sweet sound with that amp.
If the 2000s were made today it would be advretised as a 200w amp.
It can hold its own against a swr sm 400 , Gk rb 400, or a hartke 5000
On second thought, it can kill and rb 400