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In Reply to: David bogen company posted by nvinyl66 on March 14, 2007 at 07:43:46:
I've never seen it mentioned, but looking at old schematics it appears there was a seperate company named "Challanger" that Bogen bought.
Hence Bogen's Challanger models.
Follow Ups:
I have a less than working challenger in the basement. I could post a few pics in the next day or so if anyone's interested.
I kind of took it away from topic.
The guy asked about HiFi, and Challangers seem to all be low powered Mic and monitor amps.
I shouldn't have speculated who bought what.
In 1947 and 1949, David Bogen Co. is at,
663 Broadway NY
In 1949, Challanger Amplifier Corp. is at,
663 Broadway NY
In the early 50's Bogen is on 29'th Ave.
I don't know if that's just offices or what.
But I swear I've seen a schem or amp that had,"Challanger *By* Bogen".
Pictures are always cool, but the OP was asking about the freaky circuits with freaky tubes ;-)
Challanger was making some battery powered, and ACDC stuff in the forties.
A SE 6L6 amp 6A @ 6VDC, and a PP 6V6 with turntable on top 14A @ 6VDC.
I'm just going to have my own mini trivia thread here.
I looked closer at some schems last night with them at the same address, but seperate company nanmes..
Challenger was using the same in-house part #'s.
I looked at a Challenger 807 PP amp and the OPT is T256.
On a 1949 Bogen 807 PP the OPT is T256-1.
I don't understand the system, but they are definetly sharing more than office space.
Hello there,I purchased a Bogen 807 based amp made in the 40s for National Theater Supply recently that I'm trying to identify, in hopes of eventually finding a service manual and/or schematic. It's interesting that the possibility exists that it may be a Challenger design or implementation.
Wondering if you could take a quick look @ these pictures at the link below to determine if any of the schematics you have would be for it? I'd be happy to pay you by some means for a copy of a service manual/schematic if you have it. (Bogen, now in Ramsey NJ, replied and noone there was able to identify the amp or help me with a manual or schematic.)
Thanx very much,
Steve
I don't have one to match the picture!
You might try posting numbers from the transformers.
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