I picked up an old Randall 35w practise amp a while back. I took the grill off the other day and one of my kids accidently put their foot through the speaker cone (don't ask!). What I'm thinking of doing is making a new housing for the head as a standalone and wiring up a 1/4" socket on the back panel so I can connect it to an external speaker box. First off, the combo doesn't tell me the ohms of the speaker it had - anyone want to have a guess? On that basis, would it be as simple as plugging in an external PA monitor with say a single 10" speaker be okay? I know I could just replace the speaker but it seems like a fun project to do it this way. Out of interest, could I even plug my single 15" speaker box into it? It's an 8 Ohm, 200 watt SWR. What would be the impact on the sound of a 35w head driving a 200w speaker?