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Made in Rochester

Rochester NY is the area where I grew up and have worked for thirty or so years.  While I have worked at a few companies that produced products using vacuum tubes, the ones I include here are audio and radio manufaturers.  The first one comes from the big yellow box - Eastman Kodak.  Here's an 8 watt amplifier from a 16mm movie projector, circa 1960:

Closeup of label:

Bottom:

Schematic

Another Kodak projector amp (this one has magnetic recording/playback) :

Schematic

Here's a 20 Watt per channel stereo amplifier from Stromberg Carlson, model ASP-422:

Closeup of chassis (bias test jacks and fuse aren't original):

One of the previous owners must have worked for S-C, since there were several factory prints with it.
Factory Specifications
Power transformer and output transformer specs
Schematic and service notes are below.

A spec sheet for the mythically rare 6DY7 tube (used nowhere else I know of...)

Here's a Stromberg Carlson Radio from 1940 - model 405:

Inside this fancy cabinet is a fairly basic All American Five circuit, though it appears to be built to Stromberg's high quality standards.  The dial is calibrated in kilocycles and meters - it's AM broadcast band only.

The current owner bought this in California.  To his surprise, the pushbuttons were marked with Rochester area
stations, so it was coming back home after all these years.

Another Stromberg Carlson amp, model ASR-120 from a console that also had an AM/FM simulcast tuner, which would date it to the early 60s.   Here's  a schematic.  (7199 driver tubes were replaced with 6U8.)  And underneath:


 


I found this 1940 Stromberg Carlson model 420H at an auction. Pretty basic circuit wth no RF stage, but it does have an eye tube.

 

Here's a variable capacitor made in Rochester by Precise Manufacturing, maybe 1930 or so - the oddly shaped plates are for "Straight Line Tuning":


 

Another Stromberg amp - the ASR-433.  I had one of these about 30 years ago (it might have been an ASR-333)...

The ASR-333 is similar, without the magnetic phono preamp.   Schematic and service info is below.

Two radios needing a little work....

1946 Stromberg 1101H - needs dial glass and a bit of paint...


1955 Stromberg EP-2 portable.


A hamfest buy - AU-32 PA amp.  Gave it to my brother to use as a bass guitar amp.

This ASR-444 amp looks familiar... the preamp section is identical to the ASR-433 above.

Horizontal mounting was needed to get the output tubes under the cover.

Put on your asbestos gloves before you reach for those speaker terminals!

Underneath - the "bumblebee" caps must go!

This is the "correct" output tube - unfortunately, I only have one, and it's weak, so a motley assortment of 6L6GCs will have to do.

This might be the ONLY all solid state product Stromberg Carlson ever made - an FM multiplex decoder.

Stromberg "Roadkill"
The receiver below was found by the road on garbage day... an SR-406.  With the RARE rack mount panel...

It's pretty crusty, so I don't feel any guilt in stripping it for parts... the 6L6s and 12AX7s tested good...

Roger Jones from Toronto sent this photo of his AR-411:

The logo on top:

A neighbor sold this Stromberg ASR-333 amp on eBay, and gave me these pictures:

And here's a matching SR-445 tuner:


This saddle shoe of a radio is a 1942 Stromberg model 900H.

Found this 1957 Stromberg SR-407 AM/FM receiver at the AWA swap meet.  Wood case
is pretty good, but could use a touch-up.


 

1931 Stromberg radio brochure, and 1940 radio/TV brochure and a 1949 brochure: Low-res (500K) and Hi-res version (3.3 MB), all from Mik Long (DjVu format)

Here's a 1947 Stromberg brochure, a 1957 or so  hi-fi brochure, and a 1962 or so brochure. All are DjVu format.

Mid '50's console brochure, and a a two-page one on that newfangled idea - stereo.

1953 or so Stromberg Custom 400 series brochure (SR-401, AR-410, AR-425) (DjVu)

1958 hi-fi catalog with Stromberg's first stereo amplifier - Lo-res DjVu (600 KB) and Hi-res DjVu (Big file- 9.6  MB)

1960-61 Stromberg stereo catalog - Lo-res DjVu (1.1 MB) and Hi-res DjVu (Big file- 12.8 MB)

1962 Stromberg stereo brochure, "Styled by Federico" - Low-res DjVu (750K) and Hi-res DjVu (6.5 meg)

The Shrine of the Ancient and most Excellent Stromberg Carlson AP-55
And one for the AP-80, and another for the APH-1050

"There is Nothing Finer than a Stromberg Carlson" - and only ONE car was fine enough to deserve a Stromberg Carlson radio from the factory... This one!

Many Stromberg Carlson radio models are pictured at Radio Attic and at AntiqueRadios.com's Gallery

A 1931 Stromberg service manual (DjVu format).   20's - 50s Stromberg info from Riders (pdf) and Beitmans (DjVu)

1937 Stromberg parts catalog: pages 1-30, pages 31-50, 1938 parts and tools (DjVu), and 1939 addendum

I've scanned most of the Sams folders I have for Stromberg (except TVs - only by request... at the bottom)  Everything I have is listed below - though some remain to be scanned.  If you have any I don't have, (some missing ones are shown in gray) I'd be happy to get a scan or a loan to add it.  Also, I have some Canadian Stromberg schematics from the Radio College of Canada books, 1920's to 1948, which will be added eventually too (at least those that aren't duplicates of US models).

When the schematic is shown separately, it's usually a paste-up of multiple pages - i.e. BIG!  Right click, Save As..., open in a graphics program.  Many are bigger than the maximum picture size for Internet Explorer (display as box with an "X") - no problem in Netscape or Firefox.
 
 

Prewar ('20s -'42) Stromberg-Carlson Service Information
Most are in DjVu format; schematics are .gif or .tif files.  Stromberg publications are prefixd "S-C".
Model Year
1A, 601, 602 1925 Poster of early models
10 - 26 pre '31 RTI manual 
19, 20 1931 S-C Eng. Data  Schematic
48, 49, 50, 51 1933 S-C Eng. Data  Schematic
60 1934 S-C Engineering Data Op. instructions
58, 61-84 (Canadian) 1935 RCC schematics
70, 72, 74 1935 70 Series Manual Model 74 Brochure Hi-res (3.5meg)
75, 95 (Canadian)1940RCC Schematics
80 1936 S-C Eng. Data  Schematic (tif)
84 1936 S-C Eng. Data  Schematic (tif)
125 1937 S-C Eng. Data  Schematic
130 1937 S-C Engineering Data
140 1937 S-C Eng. Data  Schematic (tif)
150 1937 S-C Eng. Data  Schematic (tif)
154 (Canadian) 1940 RCC service data
160 1937 S-C Eng. Data  Schematic (tif)
1801937S-C Instructions
225 1938 S-C Eng. Data  Schematic (tif)
228 1938 S-C Engineering Data
229P 1938 S-C Engineering Data
230, 231 1938 S-C Eng. Data  Schematic (tif)
235 1938 S-C Eng. Data  Schematic (tif) Solder Nuggets 1-36
240 1938 S-C Engineering Data Solder Nuggets 1-30
245 1938 S-C Eng. Data  Schematic (tif) Solder Nuggets 1-37, 1-38
250 1938 S-C Eng. Data  Schematic Solder Nuggets 1-31, 1-35
255 1938 S-C Engineering Data Solder Nuggets 1-32, 1-33
260 1938 S-C Eng. Data  Schematic Solder Nuggets 1-34
320 1939 S-C Engineering Data
325 1939 S-C Engineering Data Solder Nuggets 2-2
335, 336 1939 S-C Engineering Data Solder Nuggets 2-3
337 1939 S-C Engineering Data Solder Nuggets 2-6
340, 341 1939 S-C Engineering Data
345 1939 S-C Eng. Data  Schematic Solder Nuggets 2-7
350 1939 S-C Engineering Data Solder Nuggets 2-8
360 1939 S-C Engineering Data
370 1939 S-C Eng. Data  Schematic (.tif)
400 1940 S-C Eng. Data  Schematic
402 battery radio 1940 S-C Engineering Data
4051940Riders pages
410, 411 1940 S-C Engineering Data
412 1940 S-C Eng. Data  Schematic
420 1940 S-C Engineering Data
425 FM radio (40 MHz) 1940 S-C Engineering Data
430 1940 S-C Engineering Data Solder Nuggets 3-1, 3-2
435 AM / 40 MHz FM 1940 S-C Engineering Data
440 1940 S-C Engineering Data
450 1940 S-C Engineering Data
4551940S-C Engineering Data
480 1940 link: schematic
500 1941 S-C Eng. Data  Schematic
501 1926 Schematic (thanks to Brent Miller)
505 FM radio (40 MHz) 1941 S-C Engineering Data
509 1941 S-C Engineering Data
515 AM / 40 MHz FM  1941 S-C Engineering Data Schematics: AM  FM
520 1941 S-C Engineering Data
530, 535 1941 S-C Engineering Data
585 1941 S-C Engineering Data
6001942S-C Engineering Data
635-645, 734, 744, 846 pre '31 RTI manual  NRI booklet on 635 - 638
9001942S-C Engineering DataRiders pages
920 1942 S-C Engineering Data Instructions
925, 1025 1942 S-C Service Notes link: 1942 Beitmans
951, 952, 972, 992 (Can.) 1939 RCC Schematics (pdf)

 
Postwar ('46 -'62) Stromberg-Carlson Service Information
The Sams Photofact(R) folders (pre-'64) are out of copyright, so they can be copied freely.  Most folders are in DjVu format; schematics are .gif files.  Stromberg publications are prefixd "S-C".
PHOTOFACT is a registered trademark of Sams Technical Publishing LLC.
Model Year
85-SE (Edsel) car radio 1958 S-C Service Data Sams folder 402-8
87-SE (Edsel) car radio 1958 S-C Service Data Sams folder 403-7
541, 552 / 662 (Canadian)  1946 RCC Schematics (pdf)
553, 561 (Canadian) 1946 RCC Schematics (pdf)
674, 694 (Canadian) 1946 RCC Schematics (pdf)
752, 761 (Canadian) 1946 RCC Schematics (pdf)
863 (Canadian) 1948 RCC Schematics (pdf)
872 (Canadian) 1948 RCC Schematics (pdf)
1020, 1120  1946 S-C Service Notes (See 1220)
1100H AM radio 1947 S-C Service Notes Sams folder 20-31
1101H AM radio 1946 Sams Schematic    Riders pages Sams folder 2-9
1105 battery radio 1947 Sams folder 18-29
1110 AM / SW radio 1947 S-C Service Notes Sams folder 18-30
1121 AM / FM radio  1946 Schematic  Instructions Sams folder 10-31
1135 AM / FM 1946 Sams folder 23-26
1200/1400 AM radio 1949 S-C Service Notes Sams folder 57-20
1202 AM / Phono 1949 S-C Service Notes Sams folder 55-21
1204 AM / FM radio 1947 Sams folder 34-22
1210 AM / FM 1948 Sams folder 37-23
1220 AM / SW / Phono 1948 Schematic Sams folder 50-19
1235 AM / FM Phono 1948 Sams folder 49-23
1406 1949
1407 1949 S-C Service Notes Sams folder 58-23
1408 1949 (See 1210)
1409 AM / FM Phono 1949 S-C Service Notes Sams folder 62-20
1500 AM radio 1951 Sams folder 132-15
1507 console radio 1951 Schematic Sams folder 133-13
1608 console 1951 Schematic Sams folder 150-12
2051 radio / phono (Canadian)195?RCC schematic
2061 (Canadian)195?RCC Schematic
AE-426 preamp 1958 S-C specifications Sams folder 384-15
AF-501, 502 1958 Sams folder 385-11
AF-601 1959 Sams folder 469-20
AF-631 1958 Sams folder 422-15
AF-681K console 1959 Schematic Sams folder 464-18
AM-441, AM-442, FM-443 1961 (see SR-445)
AP-428 mono amp 1957 S-C specifications Sams folder 365-14
AP-437 mono amp S-C Schematic
AP-60 mono amp 1955 Sams folder 273-14
AR-37 mono amp 1951 link: Rider's PA manual Sams folder 128-14
AR-37A mono amp 1952 Schematic Sams folder 175-15
AR-410 mono amp 1953 Custom 400 series brochure Sams folder 194-12
AR-411 mono amp 1957 Sams folder 381-15
AR-415 mono amp 1958 Sams folder 420-9
AR-419 mono amp 1957 Schematic Sams folder 379-14
AR-420 mono amp 1955 Sams folder 301-10
AR-425 mono amp 1953 Custom 400 series brochure Sams folder 199-12
AR-430 mono amp 1959 Instructions   S-C svc. notes  1
AR-431 mono amp1959
AR-432 mono amp 1959 Schematic Sams folder 468-14
ASE-434 stereo preamp 1961 Schematic Sams folder 517-13
ASP-422 stereo power amp 1960 S-C Schem   S-C svc notes   Instructions Sams folder 511-13
ASP-80 stereo power amp 1961 S-C Schematic (See ASR-880)
ASR- 110, ASR-120 1962 ASR-110 schem  ASR-120 schem Sams Folder 609-9 (pdf)
ASR-220A, B 1962 Instruction card Sams Folder 577-14
ASR-220C 1962 Sams Folder 584-12 (pdf)
ASR-333 1961 S-C Schematic Sams Folder 520-12 (pdf)
ASR-433 / 444 stereo amps 1960 Schem  S-C svc notes, instructions Sams folder 487-14
ASR-444 stereo amp 1960 S-C schematic   Instructions Sams schematic
ASR-660, ASE-6, ASP-60 1961 Factory specification   Instruction card Sams folder 573-14 (pdf)
ASR-880, ASE-8 1961 Schematic  Instruction cards  Factory QC spec Sams folder 557-12
AWP-8 battery SW radio 1956 Schematic   Ad Sams folder 307-14
BP-1 battery radio 1954 1954 ad Sams folder 259-14
C-1 AM clock radio 1951 Sams folder 153-14
C-3 AM clock radio 1955 1954 ad Sams folder 271-14
C-5 AM clock radio 1955 Sams folder 283-12   1   2   3   4
C.A.R.7 Ford/Edsel car radio 1959 Sams folder 458-15
C.A.R.9 Ford/Edsel car radio 1959 Sams folder 455-17
CSA-1, CSA-2 amplifier 1959 S-C installation instructions Sams folder 460-20
EP-2 battery radio 1955 1954 ad Sams folder 270-16
FM-443A FM tuner1962S-C schematic
FR-503, -504 1957 (see SR-407)
FR-506, -507 1957 Installation   Instructions (see SR-406)
FR-711 AM / FM / phono 1958 Schematic Sams folder 417-13
HFRP AM radio - phono 1956 Schematic Sams folder 319-12
HiFi Et 1955 Schematic (Beitmans) Sams folder 263-14
IM-60MX, IM-61PB car radios1962Schematic
MPX-2 / MX-477 FM mpx 1962 Instructions Sams sch. 584-svcr
PF-530, -535 phono 1958 Sams folder 423-21
PR-500 TT, base, arm, cab. 1962 Instructions
RF-465 Speaker1958S-C Specifications
RF-471 speaker 1958 S-C specifications
RF-473 speaker1957S-C Specifications
RF-483 speaker 1960 Instructions  from Jon at  RochesterBuyer
RP-721, 741, 761, 781 1962 (see ASR-120)
RS-506 / RS-516 speaker 1962 Instructions
RX-462 crossover 1962 Instructions picture
SF-682, -692, SFR-684, -694 1960 (see ASR-433)
SR-130 AM / FM tuner 1962 (see ASR-120)
SR-401 AM / FM tuner 1953 Schematic   Custom 400 brochure Sams folder 191-18
SR-402 AM / FM tuner 1958 S-C specifications Sams folder 395-17
SR-403B AM / FM tuner 1958 Sams folder 400-12
SR-405 mono receiver 1954 Schematic  Custom 400 brochure  1953 ad Sams folder 237-11
SR-406 mono receiver 1957 Schematic Sams folder 364-14
SR-407 mono receiver 1957 Sams folder 362-12
SR-440 AM / FM tuner 1960 Schematic (see ASR-433)
SR-445 AM / FM tuner(s) 1961 Schematic   Instructions Sams folder 531-11
SR-445A AM / FM tuner(s) 1962 Schematic  Instruction card Sams folder 590-13
T-4 AM radio 1955 1954 ad Sams folder 268-14

 
Stromberg Sound Equipment Service Information 
(Riders PA manual can be found at theused.com )
Model Year
various (20, 21, 22, 25)1943?Sound System Manual (amplifiers and accesories)
various1949Sound System Manual (Amplifiers)
15 1937 1937 ad
18 1939? link: Rider's PA manual
19'40sRider's PA manual
20 '40s S-C Schematic   Engineer's Manual
21 '40s link: Rider's PA manual
27 '40s link: Rider's PA manual
30 (AS-30) '40s link: Rider's PA manual
32 PA amp 1947 S-C schematic Sams folder 11-23
AM-43 1951 link: Rider's PA manual Sams folder 129-11
AM-48, 49 1951 Sams folder 131-14
AP-22 '40s link: Rider's PA manual
AP-25 '40s link: Rider's PA manual
AP-50 mono amp 1951 Sams folder 130-13
AP-54 monster PA amp '50s S-C Schematic photo
AP-55, AP-56 mono amp 1961 Sams Schematic
AP-80 mono amp 1959 Sams Schematic
APH-1030 '60s
APH-1050 '60s S-C svc. notes and schematic link: The APH-1050 Shrine
APH-1100 '60s S-C Schematic
APH-1200 '60s S-C Schematic
AU-29 PA amp 1951 Sams folder 125-11
AU-32 PA amp 1951 Sams folder 133-12
AU-33 PA amp 1951 Sams folder 134-10
AU-34 PA amp 1951 Schematic Sams folder 128-15
AU-35 PA amp 1951 Schematic   Sales Engineers' Manual Sams folder 138-10
AU-36 PA amp 1951 Sams folder 132-14
AU-42 PA amp 1951 Sams folder 137-12
AU-57 PA amp 1958 Schematic Sams folder 421-14
AU-58 PA amp 1955 Photos Sams folder 274-12
AU-62 PA amp 1958 S-C schematic Sams folder 391-13
AU-63 PA amp 1958 S-C Schematic Sams folder 386-11
AU-64 PA amp 1958 Sams folder 388-12
AV-38, AV-39 PA preamp 1951 Sams folder 126-13
AV-70 PA amp1959Sams folder 466-13
SAU-10 1962 S-C Schematic
SAU-22 (Signet 22) '60s S-C schematic from: Black Swamp Audio
SAU-33 (Signet 33) '60s S-C Schematic Sams 1350-SED *
SAU-70 (Signet 70) '60s S-C Schematic
(Any marked * are still in copyright, so I won't be posting them if I do find them...)


Stromberg Television Service Information
TV Model Year
16, 17, 116 1951 TV schematic
24 - TV / radio / phono 1951 Radio schematic TV schematic
TC-125 1950 Installation instructions
TV-125 (Ch. TV-12) 1949 TV schematic

Thanks to Paul Lefebvre, Ralph Fresh, Brian McAllister, Scott Bowen, Scott Faller, Peter Simmons, Roy Skaggs, Meade Grazier, Lynn Glanton, Fred Miller, Don Schmelzer, and Jim Dutridge for copies and scans!


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