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Any WE specialists?

75.15.166.139
Posted on April 21, 2012 at 12:15:03
roverjohn
Audiophile

Posts: 5
Location: midwest
Joined: April 15, 2012
 I picked up an amplifier the other day and I'm looking for a schematic to figure out where the inputs are and such and to see if it will require FC drivers. The nameplate reads No. 50141 and type AO-2632-1. It appears to use two 56 driver tubes but only one is marked "56". The four outputs are 2A3's and then a mercury rectifier. It kind of looks like it's stereo to me but that's why I'd like to find a schematic and know for sure. I tried to google the numbers without success so any help would be much apreiciated.
TIA,
John

 

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Are you sure it's not a PP?, posted on April 21, 2012 at 16:12:46
Frihed89
Audiophile

Posts: 15703
Location: Copenhagen
Joined: March 21, 2005
 It's rare to see parallel tubes in SE, especially older amps. I have no idea what you are looking at. I'd guess a stereo PP.

 

On second thought, posted on April 21, 2012 at 16:24:07
Frihed89
Audiophile

Posts: 15703
Location: Copenhagen
Joined: March 21, 2005



This is a webster amp, designed to drive a field coil speaker, not hi-fi speakers. However, the rectifiers don't fit your description.

 

RE: Are you sure it's not a PP?, posted on April 21, 2012 at 16:24:41
drlowmu
Manufacturer

Posts: 9730
Location: East of Kansas City
Joined: January 10, 2005
 Or a regulated power supply ??

Jeff Medwin

 

RE: Any WE specialists?, posted on April 22, 2012 at 10:21:40
Palustris
Audiophile

Posts: 2408
Location: Cape Cod
Joined: September 12, 2008
 "It kind of looks like it's stereo to me"

Why not show us some photos?

 

RE: On second thought, posted on April 22, 2012 at 12:33:34
roverjohn
Audiophile

Posts: 5
Location: midwest
Joined: April 15, 2012
 I looked again and it is a 5Z3 rectifier. I'll try to get some photos posted but it's a little hassle as I need access to my office computer. And looking at the schematic Freihed89 posted, and thank you very much for that, it appears to be a mono amp designed to use two different drivers so maybe it's out of an organ(?).
THanks for all the help.
RJ

 

RE: On second thought, posted on April 22, 2012 at 13:12:20
roverjohn
Audiophile

Posts: 5
Location: midwest
Joined: April 15, 2012
 http://picasaweb.google.com/weichin.audio/Rauland2A3#5358377017935518866

Found some picture that are not mine but...
These amps seemed to have had the rectifier changer out to 5U4 allong with some other mods.
20 watts!
Of course the likelyhood of ever finding another is about zero so this will just go on the shelf until I find someone with a CX-20 tone cabinet that wants a spare

 

Those are decent amps, posted on April 24, 2012 at 10:27:45
Alpha Al
Industry Professional

Posts: 2958
Location: N. Carolina
Joined: February 16, 2004
Contributor
  Since: December 3, 2015



I have a pair of those in my shop system and they sound great.

They were built to power field coil speakers. You can get around that by using a 250 Ohm / 20Watt resistor in place of the field coil.

The screw terminals on the side are speaker outputs. They are spaced perfectly for dual 5-way binding posts.

They also require a phase splitter because they have balanced inputs. I used Altec 15095 transformers to provice balanced input from unbalanced sources, and also a little voltage gain. I mounted the transformers in Aluminum boxes with 5-pin plugs installed so they can plug into the inputs of the amps.

 

Picture of the input balancing unit, posted on April 24, 2012 at 10:32:18
Alpha Al
Industry Professional

Posts: 2958
Location: N. Carolina
Joined: February 16, 2004
Contributor
  Since: December 3, 2015



nt

 

RE: Those are decent amps, posted on October 4, 2015 at 08:49:20
rice-gohan
Audiophile

Posts: 1
Location: British Columbia
Joined: October 4, 2015
 Hello -
Not sure if you still have these, however I am thinking of picking up a pair. Would you have a schematic of the changes you made to adopt standard speakers. Is the output tap 8 or 16 ohm? I am just starting to look around for information.
Thanks for your help.
cheers,
Chris

 

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