Ampeg Portaflex B-15-N Bass Amp
I wrote this page originally to help me sell my classic Ampeg B-15-N Portaflex (flip-top) combo bass amplifier. I've sold the amp, but I leave this page around for Ampeg fans who might want to take a look at it.
I sold the amp because I'm not a tube amp kind of guy; these days I'm more of a small and lightweight amp kind of guy, and I haven't used it much since the early '80s when I bought a Polytone Mini-Brute III, and I have since moved on from that. I hope it's having a better life than it did in my basement!
It has serial number 059675, which according to The Unofficial Ampeg Page, seems to imply a 1967 manufacture, though the page's author told me it might have been late 1966. I got it new in mid-1967 and sold it on 2002-01-30.
Here's a schematic of a 1968 B-15-N, which has got to be pretty similar to this amp.
Full frontal nude.
It still works, and the head sounds great.
The back of the head.
A look inside the cab.
This is the back of the speaker magnet. As far as I can tell, it says:
The "137 628" part seems to indicate that the speaker was manufactured by CTS in 1966.
Here's the dolly. It's not in great shape, but it exists!