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 Post subject: Wil-Kin Theatre Supply - Amplifier
PostPosted: Nov Sat 26, 2011 2:16 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 774
Location: Jackson, TN
Hi all,

I picked up this amp at a radio swap meet a few weeks ago.

Got lucky! - The transformers, pots, etc were all good! After a recap and cleaning up some old tampering, the thing works pretty well. It uses 2 - 6C6, a 6B5, and an 83V rectifier. (It came with an 80 and that seems to work fine, giving a B+ of 360V.)

I am trying to learn a little more this amp. It is labeled by Wil-Kin Theatre Supply Co of Atlanta, GA. I've learned that Wil-Kin was incorporated in 1934 and not much shows up after 1942. They sold all sorts of theatre stuff, popcorn machines, etc.

I doubt seriously that Wil-Kin manufactured this amp, particularly with the big "Laverne & Shirley" L on the sides. Does anyone have any leads on who might have manufactured it?

BTW, this is my first experience with bias cells which are used on the two 6C6 tubes. They were dead, got them wet with some tapwater, now both are working at .9 volts. Is this the correct voltage? According to the 6C6/6J7 datasheet, about 1 volt would be a reasonable bias. If I were to have trouble with these, would it be a problem to add a cathode resistor for cathode bias instead of the bias cells?

Thanks Tim

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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Nov Sat 26, 2011 3:41 am 
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Joined: May Sat 14, 2011 5:42 am
Posts: 3265
Location: Ft Worth TX
Langevin comes to mind but I'm not sure their logo and Laverne's were the same font. Samples I could find, were not. They were also vertical rack-mount chassis, not upright-box.

James Langevin and James Lansing were peers at Western Electric at the time they spunoff audio.


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Nov Sat 26, 2011 9:28 pm 
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Joined: Nov Sat 27, 2010 6:15 pm
Posts: 5432
Bias cells should be good for another couple of decades.

Must have had a really efficient horn as a single 6B5 can't do much more than 4 watts. Could have been a monitor for the projectionist room.

That pattern of the cage has been around for ages. Used by many PA amplifiers.


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Dec Sun 11, 2011 4:28 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 594
Location: Asheville, NC USA
I believe that Wil-Kin was still around in the 1980's out of Charlotte, NC. They owned theatres at one point, too. I've never seen actual Wil-Kin badged equipment, and I've never seen the interior of a Wil-Kin booth at a theatre either.

I think this is a booth monitor amplifier, too. If it was mine, I think I'd go for the 83V tube to wake it up. I've always been a stickler for original equipment in my toys.


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Dec Fri 16, 2011 3:08 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 774
Location: Jackson, TN
Well, it cleaned up nicely (plus a coat of Krylon satin enamel)

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Although it's not high powered, it sounds nice and looks cool :D

Tim


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Dec Sat 17, 2011 2:38 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 594
Location: Asheville, NC USA
Who needs high power for everything? Not me.


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Dec Sat 17, 2011 2:42 pm 
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Joined: Sep Tue 13, 2011 1:32 am
Posts: 1713
Location: Minneapolis, MN - USA
Nice - I love it! Mate that with a restored period speaker and wow! 8)

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Tom


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Dec Sat 17, 2011 2:47 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 12848
Location: Fernandina Beach, FL
Bruce McGee wrote:
Who needs high power for everything? Not me.


About 10 years ago, I got into the late 70s Power War thing. Got several Sansui 990/9090/990DB/9090DB 100 watt RMS per channel receivers. I will admit to damaging/destroying tweeters and woofers in vintage speakers not designed for that power. (I like George Wright Pipe Organ) Usually the cranking of the volume control happened after a few cold 807s :oops: . Right now, listening to "George Wright's Showtime" on half track reel-to-reel playing through an HH Scott 299 (first generation, 1959) that I restored several years ago. It is a whole 17 watts RMS per channel. So, I won't give away my Sansui but find myself using the Scott amplifiers because once restored, they just work. Very reliable and always the same. Also, the heat generated actually warms this room!

Yes, more is not necessarily better!

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Don


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Dec Mon 19, 2011 1:06 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 594
Location: Asheville, NC USA
I've got that George Wright album, too!


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Dec Mon 19, 2011 2:37 pm 
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Posts: 12848
Location: Fernandina Beach, FL
Bruce McGee wrote:
I've got that George Wright album, too!


Bruce,

I actually have most of George Wright on CD now. But watching the reels turn can't be beat!

Sorry to go OT...

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Don


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Sep Tue 12, 2017 6:38 pm 
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Joined: Sep Tue 12, 2017 6:23 pm
Posts: 1
So, I don't know about who made that, but I found your post researching something else. I live in downtown Atlanta, and there is a bar a lot of us like called "Park Bar", because it is next to Centennial Olympic Park. One side of the bar has a very very large billboard, the kind they stretch canvas over a frame for instead of putting up a solid board for. They took it down for hurricane Irma, revealing to me for the first time that side of the building, which bore the building's original paint. It read "Wil-Kin Inc.".

The company's building that sold that, Wil-Kin Inc. , is now a bar, in downtown Atlanta.

PS: Flats is nice too, but Park bar is actually behind it in these pictures.


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Sep Wed 13, 2017 12:15 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 774
Location: Jackson, TN
Thanks for posting, it's always fun to see an old puzzle piece fall into place.

Tilt one for me at The Park!

Tim


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Sep Thu 14, 2017 6:35 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4815
Location: Rochester NY USA
I have a very similar amp here on the shelf, no cage though. It uses a pair of 6J7 instead of the 6C6. No name on it, unfortunately.


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 Post subject: Re: Wil-Kin Theatre Supply - Amplifier
PostPosted: Sep Sun 17, 2017 5:20 pm 
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Joined: Sep Sat 16, 2017 2:06 am
Posts: 10
Some more information on the history of the former Wil-Kin Theatre Supply building from https://atlantahistory.wordpress.com/page/6/ (about half-way down the page).

"In the 1930’s the first floor was William Dunn’s photography studio and commercial artist Roy Felker. The second floor had Poster Exchange that did theatre advertising and poster artist Clayton H Pumphrey. In the 1950’s it was Wil-Kin Theatre Supply Inc. it was vacant for at least the last 20 years and now the fine folks at Side Bar have renovated it and opened the new Park Bar and it’s right on the Park. Yay!"


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