I have an old Crate BX-80 with the stock 80 watt 8 ohm Eminence 15. It sounds like crap. Want to install a Celestion 4 ohm but don't know if the BX-80 amplifier can handle a 4 ohm load. Most amps have no problem with 4 ohm loads but I cannot find anything on line to verify. Does anyone here have the answer?