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 Post subject: Re: Bell Amplifier Restoration Finished
PostPosted: Aug Mon 05, 2019 3:25 am 
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Joined: Apr Sat 04, 2015 6:15 am
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Location: Dos Rios, CA. region
All looks showroom floor worthy, Steve, very nice!! :) I may have an all octal mixer amp to spare for next summer's project :?: if interested, though it wouldn't be a Bell from Columbus...I've only come across their Hi-Fi before
-Kent


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 Post subject: Re: Bell Amplifier Restoration Finished
PostPosted: Aug Mon 05, 2019 3:39 am 
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Joined: May Sun 13, 2012 8:12 pm
Posts: 12516
Location: Central PA 16801
hi kent,

thanks

send me some pics sometime of the mixer amp.

do you still have my email address ?

steve

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 Post subject: Re: Bell Amplifier Restoration Finished
PostPosted: Aug Mon 05, 2019 4:19 am 
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Location: Dos Rios, CA. region
Yes, I retrieved the address from old PM's so have it handy....
What I can think of off the top of my head that's all octal, art deco style and nice are:

1956 RCA MI-13299-A Deluxe Amplifier (50 watts 807's, 4 channels w/ mic input transformer capability and 6SF5's for pre's, already rebuilt by a friend over ten years ago, probably needs a rehabbing...I restored the cab over the years and still have photos of it's horrendous condition when I received it from southern Indiana ...
Operadio 1A140 (6V6G p/p) Nice, untouched except for tube testing and wrangling
Rauland 1916 "Green Gem" as above,...


There may be more... (I'll have to look around)

Also have many nice octal preamplifier mixers for recording (more than I can possibly ever use :cry: )
A "Newcomb KX-6A" for example..
If possibly interested in those, too, I can send photos to your email as well...

All this year I've been attempting to build a pair of compressor/expanders for remastering my original recordings
from old octal circuits from mid thirties through the 50's....right now my plan is building a circuit with 1612's in P/P from QST, 1945.,
I referenced from the RCA Radiotron Designer's handbook 4th Ed, 1952., into the metal cases of a pair of Altec 352A parts unit's...


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 Post subject: Re: Bell Amplifier Restoration Finished
PostPosted: Aug Mon 05, 2019 9:15 pm 
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Joined: May Sun 13, 2012 8:12 pm
Posts: 12516
Location: Central PA 16801
thanks,

steve

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 Post subject: Re: Bell Amplifier Restoration Finished
PostPosted: Aug Wed 07, 2019 2:47 am 
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Joined: May Sun 13, 2012 8:12 pm
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Location: Central PA 16801
just when I thought i had the shop all cleared out and began packing things up this weekend...

look what found me, honestly...

a 1943ish Thordarson Amp.

steve


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 Post subject: Re: Bell Amplifier Restoration Finished
PostPosted: Aug Wed 07, 2019 3:03 am 
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Joined: Apr Sat 04, 2015 6:15 am
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Location: Dos Rios, CA. region
There you go! I have the same model I believe unrestored electrically a 31w25. (EDIT: Or the larger 31W50?)
These are very nice amplifiers with excellent iron, I have lots of info on them, will scan and send soon to your email
All octal!! 8)
Now I guess I can tell you I may build a all Sylvania Loktal :!: tube compressor at some point in the future from same era circuit as these Thordarson models
as well as a Thordarson 31K11? similar circuit compressor from same line as these amplifiers (1940 to 1948?)


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 Post subject: Re: Bell Amplifier Restoration Finished
PostPosted: Aug Wed 07, 2019 3:14 am 
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Joined: May Sun 13, 2012 8:12 pm
Posts: 12516
Location: Central PA 16801
excellent. yes, all OCTAL.

:lol: keep the locktal stuff away from me :evil: .

tom bavis is probably finding me a scan of the sams, but i will gladly ALSO :) accept whatever you have on this amp.

you can email it or mail me a CD, whatever you want to do. i will PM you my email address.

between you and Tom, i hope to have more than i need for September 8) .

thordarson amp restoration thread seen here with more pics:

viewtopic.php?f=13&t=363006

steve

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