Hey Mike, I have an all original August of 1962 B15N. Most likely your amp is a B15N as this was the most common in the day. If so I believe the amp pushes 28 watts peak! The B18 was close to 40 watts. As far as over or under driving anything blah,blah,blah. I've had a 400 watt Fane 8 ohms in her and I'm currently using a 50 watt Jensen 16 ohms. I've recently acquired a 20 + year old JBL D-140 F at 16 ohms that I will install soon and I have run the amp for about 1 1/2 -2 hours with the aforementioned speakers and no adverse affects. Price wise I agree the acoustic or behringer would be ok or even a used Peavey. Don't expect huge volumes and it will take a dump if you put a low B into it. But the tone is so brown and warm and wonderful it is worth the time and money to fix it. I used to use mine while my kids watched TV, I could wale away and not disturb the bucolic nature of the nabe. If you come across an old cabinet and want to get a more authentic sound, I would recommend US Speaker and look for the old amp style vintage speakers.Eminence and Fane come to mind. Low wattage stuff. Usually under a hundred bucks. Dr Bass could build you a cabinet that would allow you to flip and stow the head. Hope this helps.
