Bogen VP17X

  • Thread starter Thread starter brother rat
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brother rat

brother rat

All mics sound the same.
This was a portable turntable of 1950's vintage, I believe. The turntable is long gone now, but I have the original amplifier section and it is in decent working order. I can't seem to find a schematic (other than a photocopy that I would have to pay for). I've been playing my guitar through it a little bit. It has a 1/4" mic input and a 1/4" radio input. But I get a lot of odd noise through it and it makes a feedback type of sound at high volume. Any way I can alleviate or remedy that? I can generally follow a schematic, but I am far too inexperienced to come up with solutions. And I have virtually no experience with tube amps anyway. I can list the tubes it has, if that helps (5Y3 GT, 6V6 GT, 6V6 GT, 6SL7 GT, 6SJ7 GT, 6SC7 GT). That is what is printed on the chassis next to each tube.
Any help would be appreciated.
 
I have nothing to contribute, so don't let me hijack the thread, but when I saw "Bogen" I just had to look...

Back in the mid-60's we used Bogen amps for our home built band PA's back before "packaged" PA system existed. Then the Shure Vocal Master came along...

Now back to your regularly scheduled message...
 
As I understand, Bogen made some decent quality stuff. How well did that equipment perform for you as a PA?

I guess a couple of better questions that should be in my original post would be:
Should I look into replacing all of those tubes right off the bat? Could that be what's causing the noise?
And, my aim is to use this as a guitar amp. So what modifications should I make to better suit it to that purpose?

I might be able to draw up my own schematic. We'll see.
 
Well, the Bogen's were better than the Radio Shacks or "jukebox salvage" we previously used, but they were really designed more for things like school PA's and things like that. And since our cabinets were mostly Radio Shack speakers in home-built boxes, let us say that the quality was somewhat less than optimal.

But all we were really trying to do was have the singer be louder than a 40-watt Fender Super Reverb...
 
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