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  #31  
Old 07-24-2010, 05:13 PM
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'40's GE 78 rpm childs phonograph. Needs a cartridge and drive mechanism repair.


Early '60's Arvin w/ AM radio. VM built changer.


Dynavox 16" transcription player. Very cheaply made. While rebuilding the amp, I managed to break one of the tube sockets. Like I said, this is a very cheaply built player.


Trav-Ler mid '50's hi-fi w/ BSR changer. This one had a squealing amp that a recap didn't fix; so, I got mad and stripped the chassis down. With the aid of a schematic, I plan to rebuild the amp from the ground up.



'40's Crosley radio/78 rpm phonograph. Someone, who bought this at a yard sale, brought it to me for repair. When I gave them an estimate, they couldn't decide if they wanted it fixed and said they'd get back with me. I offered to buy it from them if they decided not to fix it, which they said they'd probably take me up on. Then, they dropped off the face of the Earth. That was over 5 years ago; so, I guess it's mine now (for free).

Last edited by radiotvnut; 07-24-2010 at 05:49 PM.
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  #32  
Old 07-24-2010, 08:42 PM
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OMG!
I have that exact model Dynavox!
You are right. What a piece of junk!
I installed a 35Z5 rectifier in place of selenium where they had old paper filter can.
I put in a pair of 35C5 audio outs in place of the 50 volt tubes.
Are you aware those are NOT wired in PP? They are in almost exact parallel.
The output transformer is not center tapped. It's tapped near the bottomfor the other output tube, and, mis matched.
The 12AX7 tubes aren't wired correctly, and, they put resistors accross volume controls because resistance was wrong, then, they put a resistor in series with hot wire of cartridge.
It doesn't get louder. Just more distorted.
What a piece of junk!
I think I'll have to re design amp just to make it usable....
Bill Cahill
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  #33  
Old 07-24-2010, 11:30 PM
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Quote:
Originally Posted by Bill Cahill View Post
OMG!
I have that exact model Dynavox!
You are right. What a piece of junk!
I installed a 35Z5 rectifier in place of selenium where they had old paper filter can.
I put in a pair of 35C5 audio outs in place of the 50 volt tubes.
Are you aware those are NOT wired in PP? They are in almost exact parallel.
The output transformer is not center tapped. It's tapped near the bottomfor the other output tube, and, mis matched.
The 12AX7 tubes aren't wired correctly, and, they put resistors accross volume controls because resistance was wrong, then, they put a resistor in series with hot wire of cartridge.
It doesn't get louder. Just more distorted.
What a piece of junk!
I think I'll have to re design amp just to make it usable....
Bill Cahill
I actually never made it to any sort of circuit analysis before breaking a terminal off of one of the ultra cheap tube sockets. That little set-back PO'ed me to the point of just putting it away for another day. I'll probably end up doing to mine what you may do to yours and redesign the amp for better performance. Most of these cheap players have a schematic pasted inside the cabinet. Not this one! Had I known how cheap it was, I would have never bought it off ebay. This was obviously a model that was geared towards people who could not afford a Newcomb.
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  #34  
Old 07-25-2010, 09:48 PM
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Here's an early '50's Zenith AM radio/cobramatic record changer.



Here's a late '40's Silvertone console radio/78 rpm record player/wire recorder. Yes, I know I should have gotten the broom out of the way before taking the picture.



Next, is a circa '57 Philco mono console record player. The amp is a PP-6V6 design. The original changer was a Philco branded Webcor; but, it was destroyed by the time I got this player and I substituted a VM changer. Fortunately, the hole was cut to accept a VM or a Webcor changer without modification; so, I suspect some of these units may have come with VM changers. One day, I hope to find the correct Philco branded Webcor to stick back in this player.

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  #35  
Old 07-26-2010, 02:21 AM
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I have the Sams for that Philco/Webcor changer somewhere - model M37 I think
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  #36  
Old 07-26-2010, 03:31 AM
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That doesn't look like a Webcor changer to me. Looks like a VM 1200 series.....
Bill Cahill
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  #37  
Old 07-27-2010, 05:06 PM
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Here's a Webcor Musicale that uses a PP-6V6 amp and a GE variable reluctance magnetic cartridge.


Next, is an early '50's RCA.


Last, is a rather unusual institutional phonograph. It is a Benjamin/Lenco and uses a stereo magnetic cartridge with the two channels tied together for mono and a lightweight tonearm. The amp is solid state and it also has a microphone input. This is the first institutional player that I've owned that had what would be considered a hi-fi turntable attached to it. I have seen some pictures of some older Bogen tube units that used a Lenco TT with a GE variable reluctance cartridge; but, have never actually had my hands on one of these players.

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  #38  
Old 07-28-2010, 01:30 PM
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Ok,

I do like to post pictures...

Picked this up off the bay a few months ago. Mid-1950's D & R turntable made in Santa Barbara California. Not to many arouund, pretty unique all the way around. I need to get a cartridge yet and preamp, probably start ramping this project up as the tempeture falls...

I shot these pics while unpacking, the motor is hanging from isolators as it must of shifted in transport. I will replace the gromets but I was able to reassemble so all is fine for now.
Attached Images
File Type: jpg 20070101_04_03.jpg (75.3 KB, 43 views)
File Type: jpg 20070101_04_02.jpg (74.8 KB, 38 views)
File Type: jpg 20070101_21.jpg (83.8 KB, 27 views)
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  #39  
Old 07-28-2010, 03:00 PM
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Nice TT! The tonearm was built by Rek-O-Kut and the turntable itself also looks like a Rek-O-kut.
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  #40  
Old 07-28-2010, 07:38 PM
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Yes it is a Rek-O-Kut S160 tone arm, it was standard fare on many of the D & R turntables. There are actually holes drilled for a 2nd (12") arm, I would like to add something nice in the future.

I have found very little information on them, check out the link below. This is the 12B model.

http://www.jamesvanarsdale.com/DandR/
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  #41  
Old 08-06-2010, 11:44 AM
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Smile

More proof of my insanity.......




Convinced, yet?
I have more proof, it not.......
Bill Cahill
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  #42  
Old 08-09-2010, 10:18 PM
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I love those Edison cylinder players... Most of the ones I see look alot more worn
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  #43  
Old 08-10-2010, 12:52 AM
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I like those as well and hope to find one some day.
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  #44  
Old 08-13-2010, 02:31 PM
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Well, I am not a serious collector of record players, when I spotted this little Emerson "Wondergram" in a junque store, I first thought it was a flip-lid tube radio from the 40s-50s, similar to others that Emerson produced... Pix 1

Upon closer inspection, I discovered that it was not... Pix 2

The Wondergram plays both 45 and 33 RPM records, and was made in England by Baird*. Anybody else here have one?

jr

*also stamped "A Camp Bird Product" on the bottom.
Attached Images
File Type: jpg DSCN0951.jpg (62.4 KB, 38 views)
File Type: jpg DSCN0952.jpg (53.8 KB, 54 views)

Last edited by jr_tech; 08-13-2010 at 03:11 PM. Reason: add camp bird id
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  #45  
Old 08-13-2010, 06:45 PM
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Well, admittedly, I've never had a burning desire to own one, but, they are unique.
There have been several on e bay, and, they do sell. Not for a whole lot, but, they definately DO sell. They are interesting.....
Thanks for the pix. showing how it works. How do they sound?
Battery operated?
Transistor, I presume?
For an obvious toy, they are quite interesting.
A unique design of its' day.
Bill Cahill
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