You would have found this amp in a movie theater projection booth. Used as an amp to send music from a phonograph out to the house as people were waiting to see the movie. The projectionist also had a microphone plugged into it so he could talk to the audience in case the film broke and he needed a few minutes to get things up and running
I can't help but think how, for what this would have fetched on ebay from some audiophile, you could've then grabbed like 2 or 3 old Hammond (AO-35 or AO-44 or similar) reverb amps and made 2 or 3 different guitar amps out of them, though there is a limit to what you can do with those without completely rewiring the tube sockets and rebuilding the entire signal path from scratch, whereas these old PA amps are basically already clean-ish guitar amps and with those separate preamp tubes for each mic input, it would actually be rather easy in the future to cascade the phono stage into the first mic input stage, then into the second, and get a monster of an amp out of this thing, all in a day's work, so I guess it's worth it.
Yes, someday in my spare time I should attempt to route the phono and mic inputs as you suggested. The amp is already loud, that would make it insanely loud. It would be great I bet.
@@stratokev2 So, let's say you cascade phono to mic 1 to mic 2, you already have a volume control for mic 2, it would act more or less as your master volume, so you could at least squeeze it a bit before the phase inverter, giving you tons of front end gain and controllable volume.
Dude you make me nervous.. do me a favor. Next time you have Chinese food. Save your chop sticks. It will save your life. Probing around in high voltage with out a chop stick.. remember the one hand rule
You would have found this amp in a movie theater projection booth. Used as an amp to send music from a phonograph out to the house as people were waiting to see the movie. The projectionist also had a microphone plugged into it so he could talk to the audience in case the film broke and he needed a few minutes to get things up and running
Thank you!
I can't help but think how, for what this would have fetched on ebay from some audiophile, you could've then grabbed like 2 or 3 old Hammond (AO-35 or AO-44 or similar) reverb amps and made 2 or 3 different guitar amps out of them, though there is a limit to what you can do with those without completely rewiring the tube sockets and rebuilding the entire signal path from scratch, whereas these old PA amps are basically already clean-ish guitar amps and with those separate preamp tubes for each mic input, it would actually be rather easy in the future to cascade the phono stage into the first mic input stage, then into the second, and get a monster of an amp out of this thing, all in a day's work, so I guess it's worth it.
Yes, someday in my spare time I should attempt to route the phono and mic inputs as you suggested. The amp is already loud, that would make it insanely loud. It would be great I bet.
@@stratokev2 So, let's say you cascade phono to mic 1 to mic 2, you already have a volume control for mic 2, it would act more or less as your master volume, so you could at least squeeze it a bit before the phase inverter, giving you tons of front end gain and controllable volume.
Dude you make me nervous.. do me a favor. Next time you have Chinese food. Save your chop sticks. It will save your life. Probing around in high voltage with out a chop stick.. remember the one hand rule
Thank you!