Explainette record player / projector

[radiotvnut]

Here's an Explainette "30-50" filmstrip projector / record player that looks to be from the late '40's. I think these were used by schools and salesmen in order to view filmstrip's and for listening to the audio soundtrack that came with said film. During my school years, we still used filmstrip's; but, the soundtrack was usually on cassette.

The amp uses 3-tubes (12AT7, 12AU7, and 50B5, along with a selenium rectifier). The cartridge is a near-dead flat metal crystal ten pound tracking model with a "nail" needle. The turntable is direct driven and is currently running at 33 1/3 rpm. I don't know if this unit will run at 78 rpm; but, if it will, I can't find how to change the speed.

One interesting thing I discovered is that the unit will hold a 16" transcription record.

As far as the projector portion, the bulb is burned out; but, I'm not too worried about that at this time. I don't even know if a bulb is still available for this unit; and, even if it is, it's probably expensive.

This unit was made by Operadio and I think they later made the Dukane brand of projectors.

Here's a video I made of the unit:
http://www.youtube.com/watch?v=nw5TTyr3Yjg