transformers – Preservation Sound https://www.preservationsound.com information and ideas about audio history Wed, 12 Nov 2014 12:29:46 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 UTC “R” Series universal replacement transformers of the 1940s/50s https://www.preservationsound.com/utc-r-series-universal-replacement-transformers-of-the-1940s50s/ https://www.preservationsound.com/utc-r-series-universal-replacement-transformers-of-the-1940s50s/#comments Tue, 11 Nov 2014 00:19:12 +0000 http://www.preservationsound.com/?p=8232 UTC_r58_transformer_boxWhile searching through my output transformer shelf for a suitable reverb-driver transformer for the basket-case Kalamazoo Reverb 12 I recently rehab’d, I was glad to find this ancient NOS UTC R-58.   Inside the box was a near-disintegrated wiring sheet for the entire UTC ‘R’ line.  If you find yourself with any of the following units, here is what you need to know to implement it in your piece.  Apologies for the poor condition of the paper, this is the best we got!  INCLUDES: UTC R-27, R-28, R-38, R-38A, R-59, R-60, R-58 output transformers, UTC R1, R2, R3, R4, R5, R11, R12, R13, and R54 power transformers; and UTC R23, R24, R25, R26, R27, R28, and R29 ‘varitap’ interstage and input transformers.

DOWNLOAD A PDF: UTC R-SERIES TRANSFORMERS

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