Audio Transformer Blueprints

website with  xfmr print downloads>

https://vacuumbrain.uk

ok we slogged through about 13,000 posts and came up with about 110 links to transformer tear downs,

some were unusable because they linked to the closed down vacuumbrain.com site, but we managed to salvage  the following links,  sorry they are not in any type of order,

Music Man HD OPT
https://groupdiy.com/index.php?topic=63730.msg806843#msg806843
Egnater Tweaker 88 Power XFMR
https://groupdiy.com/index.php?topic=64493.msg816686#msg816686
Carvin X-100 OPT
https://groupdiy.com/index.php?topic=65062.msg824417#msg824417
Acoustic 164 OPT
https://groupdiy.com/index.php?topic=65090.msg824778#msg824778
Sovtek Mig 50 OPT
https://groupdiy.com/index.php?topic=66259.msg839022#msg839022
Ampeg Reverb Rocket 2 OPT
https://groupdiy.com/index.php?topic=66866.msg848010#msg848010
Manley Vari-Mu Input Transformer
https://groupdiy.com/index.php?topic=67531.msg858209#msg858209
Carnhill VTB9046
https://groupdiy.com/index.php?topic=61039.msg773090#msg773090
Neve EQ Inductors
https://groupdiy.com/index.php?topic=61022.msg772937#msg772937
Marshall Drake Pwr Choke
https://groupdiy.com/index.php?topic=61090.msg773903#msg773903
Echoplex Power Transformer
https://groupdiy.com/index.php?topic=61170.msg774892#msg774892
Sears Silvertone 1474 OPT
https://groupdiy.com/index.php?topic=61283.msg776258#msg776258
Melodium E 40 ES
https://groupdiy.com/index.php?topic=67907.msg862950#msg862950
Ampeg Portaflex Power XFMR
https://groupdiy.com/index.php?topic=61830.msg783306#msg783306
Peavey 5150 OPT
https://groupdiy.com/index.php?topic=62249.msg788638#msg788638
Tascam Portastudio Pwr XFMR
https://groupdiy.com/index.php?topic=62417.msg790950#msg790950
Schaller KV-40 Pwr XFMR
https://groupdiy.com/index.php?topic=62462.msg791521#msg791521
Magnetone Varsity OPT and Pwr XFMR
https://groupdiy.com/index.php?topic=63391.msg802913#msg802913
Carvin X Series 3 OPT
https://groupdiy.com/index.php?topic=58251.msg741169#msg741169
Sears Silvertone 1484
https://groupdiy.com/index.php?topic=59899.msg760438#msg760438
Fender Tremolux 1959 Tweed OPT
https://groupdiy.com/index.php?topic=60266.msg764482#msg764482
Marshall Mk. 2 Fifty Watt OPT
https://groupdiy.com/index.php?topic=60904.msg771506#msg771506
Peerless 16402
https://groupdiy.com/index.php?topic=35658.msg437757#msg437757
UTC LS-68 Hybrid
https://groupdiy.com/index.php?topic=35694.msg438204#msg438204
Freed Scully 280
https://groupdiy.com/index.php?topic=35874.msg440410#msg440410
Western Electric 94E
https://groupdiy.com/index.php?topic=35859.msg440271#msg440271
UTC Ouncer O-8
https://groupdiy.com/index.php?topic=35975.msg441730#msg441730
ADM Output XFMR
https://groupdiy.com/index.php?topic=35939.msg441227#msg441227
Triad HS-35 Innerstage
https://groupdiy.com/index.php?topic=35991.msg441941#msg441941
Freed 6L6 OPT
https://groupdiy.com/index.php?topic=36092.msg443247#msg443247
Freed 38166 Lang PEQ
https://groupdiy.com/index.php?topic=36225.msg444957#msg444957
Peerless 15067 70.7 OPT
https://groupdiy.com/index.php?topic=36434.msg447533#msg447533
Peerless K-049-D Input XFMR
https://groupdiy.com/index.php?topic=68751.msg875250#msg875250
UTC A-23  600 to 4/8 Spk
https://groupdiy.com/index.php?topic=36294.msg445836#msg445836
Triad A-57-J Line to Line
https://groupdiy.com/index.php?topic=36285.msg445760#msg445760
UTC 65959
https://groupdiy.com/index.php?topic=36224.msg445333#msg445333
Microtran M-4919
https://groupdiy.com/index.php?topic=36409.msg447331#msg447331
Chicago Transformer TA-10 Input
https://groupdiy.com/index.php?topic=36407.msg447302#msg447302
Kenyon T-6 Input
https://groupdiy.com/index.php?topic=36383.msg447020#msg447020
Kenyon T-3 Input
https://groupdiy.com/index.php?topic=36341.msg446528#msg446528
Cinemag Custom Input
https://groupdiy.com/index.php?topic=36324.msg446312#msg446312
Western Electric 186-E OPT
https://groupdiy.com/index.php?topic=36509.msg448500#msg448500
UTC H-70 Choke
https://groupdiy.com/index.php?topic=36493.msg448358#msg448358
Newcomb TR-91 Input XFMR
https://groupdiy.com/index.php?topic=36473.msg448188#msg448188
UTC CG-133 Innerstage XFMR
https://groupdiy.com/index.php?topic=36464.msg448010#msg448010
Hexa Filar XFMR
https://groupdiy.com/index.php?topic=36436.msg447542#msg447542
JBL Model 5901 Input XFMR
https://groupdiy.com/index.php?topic=36425.msg447475#msg447475
Stancor WF-21 Input XFMR
https://groupdiy.com/index.php?topic=36416.msg447388#msg447388
Stancor HF-40 Bridging
https://groupdiy.com/index.php?topic=36303.msg445921#msg445921
Haufe Teardowns
https://groupdiy.com/index.php?topic=36529.msg448649#msg448649
Triad JAF-31 Line to Line XFMR
https://groupdiy.com/index.php?topic=36513.msg448535#msg448535
Telefunken V72 Choke 
https://groupdiy.com/index.php?topic=36618.msg449841#msg449841
Insulation Materials
https://www.eis-inc.com/electrical-insulating-material-insulation-paper-and-film/c-ph2112
UTC HA-100X
https://groupdiy.com/index.php?topic=35743.msg438922#msg438922
UTC 65959
https://groupdiy.com/index.php?topic=36224.msg445333#msg445333
UTC A-26 Output XFMR
https://groupdiy.com/index.php?topic=35639.msg437637#msg437637
UTC GR-815 (A-20)
https://groupdiy.com/index.php?topic=55127.msg703622#msg703622
Ampeg Gemini OPT
https://groupdiy.com/index.php?topic=56321.0
Western Electric 5124 6L6 OPT
https://groupdiy.com/index.php?topic=56148.msg716509#msg716509
HP 400D Power XFMR
https://groupdiy.com/index.php?topic=56210.msg717176#msg717176
Masco MA-808 OPT
https://groupdiy.com/index.php?topic=56251.msg717637#msg717637
Ampeg Gemini 2 OPT
https://groupdiy.com/index.php?topic=56577.msg721734#msg721734
Fender Twin Reverb Choke
https://groupdiy.com/index.php?topic=56542.msg721389#msg721389
Triad HS-29 Innerstage XFMR Tests
https://groupdiy.com/index.php?topic=57092.msg727527#msg727527
Fender Vibro Champ OPT Antique Electronics
https://groupdiy.com/index.php?topic=50425.msg638924#msg638924
Fender Princeton Reverb OPT Antique Electronic
https://groupdiy.com/index.php?topic=50957.msg646928#msg646928
UTC A-39
https://groupdiy.com/index.php?topic=51616.msg655866#msg655866
Crimson Audio CT-2385  API OPT
https://groupdiy.com/index.php?topic=51638.msg656131#msg656131
Pro Co DI XFMR
https://groupdiy.com/index.php?topic=51666.msg656446#msg656446
Telefunken V72 Choke Rewind
https://groupdiy.com/index.php?topic=51676.msg656638#msg656638
Telefunken V72 pwr Xfmr
https://groupdiy.com/index.php?topic=51693.msg657296#msg657296
UTC LR-878  RCA BA73 Preamp Transformers
https://groupdiy.com/index.php?topic=51844.msg659062#msg659062
Telefunken V74 OPT
https://groupdiy.com/index.php?topic=52025.msg662277#msg662277
Telefunken V72a OPT
https://groupdiy.com/index.php?topic=52024.msg662273#msg662273
Telefunken V72a Plate Inductor
https://groupdiy.com/index.php?topic=52033.msg662432#msg662432
Telefunken V72a Pwr XFMR
https://groupdiy.com/index.php?topic=52064.msg662883#msg662883
Telefunken Bv14155 OPT
https://groupdiy.com/index.php?topic=52046.msg662667#msg662667
Allen AC1331 Input XFMR
https://groupdiy.com/index.php?topic=52404.msg668136#msg668136
Allen AC1323 OPT
https://groupdiy.com/index.php?topic=52460.msg668892#msg668892
Neumann U-87 BV-13
https://groupdiy.com/index.php?topic=57351.msg730838#msg730838
Marshall Pwr Supply Choke Drake T-100
https://groupdiy.com/index.php?topic=61090.msg773903#msg773903
Ampeg V4 OPT
https://groupdiy.com/index.php?topic=57835.20
Triad HS-52 OPT
https://groupdiy.com/index.php?topic=58139.msg740019#msg740019
Triad HS-50
https://groupdiy.com/index.php?topic=58230.msg740896#msg740896
UTC H-23
https://groupdiy.com/index.php?topic=68766.msg875393#msg875393
UTC M-1433
https://groupdiy.com/index.php?topic=68722.0
UTC Y-6431
https://groupdiy.com/index.php?topic=55073.msg702982#msg702982
UTC Ouncer O-9
https://groupdiy.com/index.php?topic=15050.msg174987#msg174987
UTC A-25
https://groupdiy.com/index.php?topic=9325.msg114257#msg114257
UTC A-48
https://groupdiy.com/index.php?topic=14219.msg165167#msg165167
UTC LS-140
https://groupdiy.com/index.php?topic=35773.msg439639#msg439639
UTC A-24
https://groupdiy.com/index.php?topic=35712.msg438439#msg438439
Triad HS-56
https://groupdiy.com/index.php?topic=58093.msg739559#msg739559
Triad A-200-P
https://groupdiy.com/index.php?topic=19184.msg224124#msg224124
Triad 108
https://groupdiy.com/index.php?topic=60266.msg764568#msg764568
Fender Blues Jr OPT
https://groupdiy.com/index.php?topic=68868.msg877108#msg877108
Fender Bluse DeVille OPT
https://groupdiy.com/index.php?topic=69570.msg888153#msg888153
Supro Sahara
https://groupdiy.com/index.php?topic=65729.0
Stancor WF-21
https://groupdiy.com/index.php?topic=36416.msg447388#msg447388
Peerless 15036
https://groupdiy.com/index.php?topic=65681.msg839031#msg839031
Western Electric 197-A
https://groupdiy.com/index.php?topic=35635.msg437741#msg437741
Stancor P-8130
https://groupdiy.com/index.php?topic=60150.msg763099#msg763099
Altec/Peerless 16402
https://groupdiy.com/index.php?topic=55035.msg702415#msg702415
Acoustic 164
https://groupdiy.com/index.php?topic=65090.msg824778#msg824778
Willesden EM 20014 Transformer Standon Herts England
https://groupdiy.com/index.php?topic=67951.msg863802#msg863802
Western Electric 618 B
https://groupdiy.com/index.php?topic=35586.msg437238#msg437238
McMurdy 2001
https://groupdiy.com/index.php?topic=19156.msg223804#msg223804
BV 14155
https://groupdiy.com/index.php?topic=52046.msg662667#msg662667
Webster Electric WST-419
https://groupdiy.com/index.php?topic=36499.msg448449#msg448449
Newcomb TR-139
https://groupdiy.com/index.php?topic=60055.msg762012#msg762012
Freed 32035
https://groupdiy.com/index.php?topic=35874.msg440410#msg440410
Webster Electric WST-419
https://groupdiy.com/index.php?topic=36499.msg448449#msg448449

Sorted A to Z
 

indigenous said:

Sorted A to Z

Acoustic 164	https://groupdiy.com/index.php?topic=65090.msg824778#msg824778
Acoustic 164 OPT	https://groupdiy.com/index.php?topic=65090.msg824778#msg824778
ADM Output XFMR	https://groupdiy.com/index.php?topic=35939.msg441227#msg441227
Allen AC1323 OPT	https://groupdiy.com/index.php?topic=52460.msg668892#msg668892
Allen AC1331 Input XFMR	https://groupdiy.com/index.php?topic=52404.msg668136#msg668136
Altec/Peerless 16402	https://groupdiy.com/index.php?topic=55035.msg702415#msg702415
Ampeg Gemini 2 OPT	https://groupdiy.com/index.php?topic=56577.msg721734#msg721734
Ampeg Gemini OPT	https://groupdiy.com/index.php?topic=56321.0
Ampeg Portaflex Power XFMR	https://groupdiy.com/index.php?topic=61830.msg783306#msg783306
Ampeg Reverb Rocket 2 OPT	https://groupdiy.com/index.php?topic=66866.msg848010#msg848010
Ampeg V4 OPT	https://groupdiy.com/index.php?topic=57835.20
BV 14155	https://groupdiy.com/index.php?topic=52046.msg662667#msg662667
Carnhill VTB9046	https://groupdiy.com/index.php?topic=61039.msg773090#msg773090
Carvin X Series 3 OPT	https://groupdiy.com/index.php?topic=58251.msg741169#msg741169
Carvin X-100 OPT	https://groupdiy.com/index.php?topic=65062.msg824417#msg824417
Chicago Transformer TA-10 Input	https://groupdiy.com/index.php?topic=36407.msg447302#msg447302
Cinemag Custom Input	https://groupdiy.com/index.php?topic=36324.msg446312#msg446312
Crimson Audio CT-2385 API OPT	https://groupdiy.com/index.php?topic=51638.msg656131#msg656131
Echoplex Power Transformer	https://groupdiy.com/index.php?topic=61170.msg774892#msg774892
Egnater Tweaker 88 Power XFMR	https://groupdiy.com/index.php?topic=64493.msg816686#msg816686
Fender Blues Jr OPT	https://groupdiy.com/index.php?topic=68868.msg877108#msg877108
Fender Bluse DeVille OPT	https://groupdiy.com/index.php?topic=69570.msg888153#msg888153
Fender Princeton Reverb OPT Antique Electronic	https://groupdiy.com/index.php?topic=50957.msg646928#msg646928
Fender Tremolux 1959 Tweed OPT	https://groupdiy.com/index.php?topic=60266.msg764482#msg764482
Fender Twin Reverb Choke	https://groupdiy.com/index.php?topic=56542.msg721389#msg721389
Fender Vibro Champ OPT Antique Electronics	https://groupdiy.com/index.php?topic=50425.msg638924#msg638924
Freed 32035	https://groupdiy.com/index.php?topic=35874.msg440410#msg440410
Freed 38166 Lang PEQ	https://groupdiy.com/index.php?topic=36225.msg444957#msg444957
Freed 6L6 OPT	https://groupdiy.com/index.php?topic=36092.msg443247#msg443247
Freed Scully 280	https://groupdiy.com/index.php?topic=35874.msg440410#msg440410
Haufe Teardowns	https://groupdiy.com/index.php?topic=36529.msg448649#msg448649
Hexa Filar XFMR	https://groupdiy.com/index.php?topic=36436.msg447542#msg447542
HP 400D Power XFMR	https://groupdiy.com/index.php?topic=56210.msg717176#msg717176
Insulation Materials	https://www.eis-inc.com/electrical-insulating-material-insulation-paper-and-film/c-ph2112
JBL Model 5901 Input XFMR	https://groupdiy.com/index.php?topic=36425.msg447475#msg447475
Kenyon T-3 Input	https://groupdiy.com/index.php?topic=36341.msg446528#msg446528
Kenyon T-6 Input	https://groupdiy.com/index.php?topic=36383.msg447020#msg447020
Magnetone Varsity OPT and Pwr XFMR	https://groupdiy.com/index.php?topic=63391.msg802913#msg802913
Manley Vari-Mu Input Transformer	https://groupdiy.com/index.php?topic=67531.msg858209#msg858209
Marshall Drake Pwr Choke	https://groupdiy.com/index.php?topic=61090.msg773903#msg773903
Marshall Mk. 2 Fifty Watt OPT	https://groupdiy.com/index.php?topic=60904.msg771506#msg771506
Marshall Pwr Supply Choke Drake T-100	https://groupdiy.com/index.php?topic=61090.msg773903#msg773903
Masco MA-808 OPT	https://groupdiy.com/index.php?topic=56251.msg717637#msg717637
McMurdy 2001	https://groupdiy.com/index.php?topic=19156.msg223804#msg223804
Melodium E 40 ES	https://groupdiy.com/index.php?topic=67907.msg862950#msg862950
Microtran M-4919	https://groupdiy.com/index.php?topic=36409.msg447331#msg447331
Music Man HD OPT	https://groupdiy.com/index.php?topic=63730.msg806843#msg806843
Neumann U-87 BV-13	https://groupdiy.com/index.php?topic=57351.msg730838#msg730838
Neve EQ Inductors	https://groupdiy.com/index.php?topic=61022.msg772937#msg772937
Newcomb TR-139	https://groupdiy.com/index.php?topic=60055.msg762012#msg762012
Newcomb TR-91 Input XFMR	https://groupdiy.com/index.php?topic=36473.msg448188#msg448188
Peavey 5150 OPT	https://groupdiy.com/index.php?topic=62249.msg788638#msg788638
Peerless 15036	https://groupdiy.com/index.php?topic=65681.msg839031#msg839031
Peerless 15067 70.7 OPT	https://groupdiy.com/index.php?topic=36434.msg447533#msg447533
Peerless 16402	https://groupdiy.com/index.php?topic=35658.msg437757#msg437757
Peerless K-049-D Input XFMR	https://groupdiy.com/index.php?topic=68751.msg875250#msg875250
Pro Co DI XFMR	https://groupdiy.com/index.php?topic=51666.msg656446#msg656446
Schaller KV-40 Pwr XFMR	https://groupdiy.com/index.php?topic=62462.msg791521#msg791521
Sears Silvertone 1474 OPT	https://groupdiy.com/index.php?topic=61283.msg776258#msg776258
Sears Silvertone 1484	https://groupdiy.com/index.php?topic=59899.msg760438#msg760438
Sovtek Mig 50 OPT	https://groupdiy.com/index.php?topic=66259.msg839022#msg839022
Stancor HF-40 Bridging	https://groupdiy.com/index.php?topic=36303.msg445921#msg445921
Stancor P-8130	https://groupdiy.com/index.php?topic=60150.msg763099#msg763099
Stancor WF-21	https://groupdiy.com/index.php?topic=36416.msg447388#msg447388
Stancor WF-21 Input XFMR	https://groupdiy.com/index.php?topic=36416.msg447388#msg447388
Supro Sahara	https://groupdiy.com/index.php?topic=65729.0
Tascam Portastudio Pwr XFMR	https://groupdiy.com/index.php?topic=62417.msg790950#msg790950
Telefunken Bv14155 OPT	https://groupdiy.com/index.php?topic=52046.msg662667#msg662667
Telefunken V72 Choke Rewind	https://groupdiy.com/index.php?topic=51676.msg656638#msg656638
Telefunken V72 Choke	https://groupdiy.com/index.php?topic=36618.msg449841#msg449841
Telefunken V72 pwr Xfmr	https://groupdiy.com/index.php?topic=51693.msg657296#msg657296
Telefunken V72a OPT	https://groupdiy.com/index.php?topic=52024.msg662273#msg662273
Telefunken V72a Plate Inductor	https://groupdiy.com/index.php?topic=52033.msg662432#msg662432
Telefunken V72a Pwr XFMR	https://groupdiy.com/index.php?topic=52064.msg662883#msg662883
Telefunken V74 OPT	https://groupdiy.com/index.php?topic=52025.msg662277#msg662277
Triad 108	https://groupdiy.com/index.php?topic=60266.msg764568#msg764568
Triad A-200-P	https://groupdiy.com/index.php?topic=19184.msg224124#msg224124
Triad A-57-J Line to Line	https://groupdiy.com/index.php?topic=36285.msg445760#msg445760
Triad HS-29 Innerstage XFMR Tests	https://groupdiy.com/index.php?topic=57092.msg727527#msg727527
Triad HS-35 Innerstage	https://groupdiy.com/index.php?topic=35991.msg441941#msg441941
Triad HS-50	https://groupdiy.com/index.php?topic=58230.msg740896#msg740896
Triad HS-52 OPT	https://groupdiy.com/index.php?topic=58139.msg740019#msg740019
Triad HS-56	https://groupdiy.com/index.php?topic=58093.msg739559#msg739559
Triad JAF-31 Line to Line XFMR	https://groupdiy.com/index.php?topic=36513.msg448535#msg448535
UTC 65959	https://groupdiy.com/index.php?topic=36224.msg445333#msg445333
UTC 65959	https://groupdiy.com/index.php?topic=36224.msg445333#msg445333
UTC A-23 600 to 4/8 Spk	https://groupdiy.com/index.php?topic=36294.msg445836#msg445836
UTC A-24	https://groupdiy.com/index.php?topic=35712.msg438439#msg438439
UTC A-25	https://groupdiy.com/index.php?topic=9325.msg114257#msg114257
UTC A-39	https://groupdiy.com/index.php?topic=51616.msg655866#msg655866
UTC A-48	https://groupdiy.com/index.php?topic=14219.msg165167#msg165167
UTC CG-133 Innerstage XFMR	https://groupdiy.com/index.php?topic=36464.msg448010#msg448010
UTC GR-815 (A-20)	https://groupdiy.com/index.php?topic=55127.msg703622#msg703622
UTC H-23	https://groupdiy.com/index.php?topic=68766.msg875393#msg875393
UTC H-70 Choke	https://groupdiy.com/index.php?topic=36493.msg448358#msg448358
UTC HA-100X	https://groupdiy.com/index.php?topic=35743.msg438922#msg438922
UTC LR-878 RCA BA73 Preamp Transformers	https://groupdiy.com/index.php?topic=51844.msg659062#msg659062
UTC LS-140	https://groupdiy.com/index.php?topic=35773.msg439639#msg439639
UTC LS-68 Hybrid	https://groupdiy.com/index.php?topic=35694.msg438204#msg438204
UTC M-1433	https://groupdiy.com/index.php?topic=68722.0
UTC Ouncer O-8	https://groupdiy.com/index.php?topic=35975.msg441730#msg441730
UTC Ouncer O-9	https://groupdiy.com/index.php?topic=15050.msg174987#msg174987
UTC Y-6431	https://groupdiy.com/index.php?topic=55073.msg702982#msg702982
UTC A-26 Output XFMR	https://groupdiy.com/index.php?topic=35639.msg437637#msg437637
Webster Electric WST-419	https://groupdiy.com/index.php?topic=36499.msg448449#msg448449
Webster Electric WST-419	https://groupdiy.com/index.php?topic=36499.msg448449#msg448449
Western Electric 186-E OPT	https://groupdiy.com/index.php?topic=36509.msg448500#msg448500
Western Electric 197-A	https://groupdiy.com/index.php?topic=35635.msg437741#msg437741
Western Electric 5124 6L6 OPT	https://groupdiy.com/index.php?topic=56148.msg716509#msg716509
Western Electric 618 B	https://groupdiy.com/index.php?topic=35586.msg437238#msg437238
Western Electric 94E	https://groupdiy.com/index.php?topic=35859.msg440271#msg440271
Willesden EM 20014 Transformer Standon Herts England	https://groupdiy.com/index.php?topic=67951.msg863802#msg863802

Click to expand...

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check:

https://www.audiofaidate.org/forum/viewforum.php?f=24
this is our library space where we saved many intestesting contribute of the past, now disappeared in other sites and still alive here.
the language is not a problem anymore thanks to automatic translators, anyway most of the contributors can reads and write in English too.