The 240 should be 2x40/ 2ch. rated at 11.9v. Should generate close to 50+ @14v rms. Only Rated @4 ohms bridged Mono.. Should be around 125 rms @4ohms @11.9v should do more @14v pretty sure it will run 2 ohms mono if it stays running cool with a fan. Great series of MTX. I remember a 275 running a pair of JBL 12s pretty good back in 96/97 pretty sure they were single 4ohm subs