so i have a few mosfet boxes that I homebuilt. i hooked the single up to the double and ended up getting 300Wpep ssb and 80RMS swingin over 250w on AM using a low drive PC 122 with abt 18w ssb and 3 swingin about 12 AM. theoretically 100W ssb and 60AM from that singlebanger driver is too much for the double which is correct without any kind of cooling, so i was heating the sinks of the double up getting longwinded. SO I decided to build a 1x2 with forced air. problem is the mosfets aren't that great or something's choked up here and im only getting 150w, 50rms with a 30w DK. the DK is fine, but theres really not enough swing in this thing. driver uses LC L match on input and output. I suspect it is being choked between the stages, and maybe the output tuning cap should be tweaked idk. its a head-scratcher. the main difference in terms of the mosfets involved is that the single and double have older stamped erf9530s and the 1x2 has newer ones with no restamp and the original letters just sanded off.