RE: Altec 1570 B output transformer

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Posted by Caucasian Blackplate (P) on July 28, 2018 at 20:24:04

In Reply to: RE: Altec 1570 B output transformer posted by autospecialty on July 28, 2018 at 18:32:13:

When you specify the "150 watts", you need to say at what frequency. A transformer that will do 150W at 20Hz is way, way larger than one that will do 150W at 100Hz.

I would wonder about the necessity of the feedback winding. The speaker secondary on the 1570 floats (perhaps for bridging?), you could ground it and take your feedback from speaker +.

Hammond, Slagle, Electra-Print, Heyboer, and Sowter could all likely wind this transformer for you. The core size might be a little bigger than what Mikey generally produces.

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Follow Ups Full Thread

Topic - Altec 1570 B output transformer - Cleantimestream 11:50:48 07/24/18 (8)

RE: Altec 1570 B output transformer - Caucasian Blackplate 16:16:38 07/25/18 (7)

RE: Altec 1570 B output transformer - autospecialty 18:32:13 07/28/18 (5)

RE: Altec 1570 B output transformer - Caucasian Blackplate 20:24:04 07/28/18 (4)

RE: Altec 1570 B output transformer - autospecialty 23:26:10 07/28/18 (3)

RE: Altec 1570 B output transformer - Caucasian Blackplate 07:09:38 07/29/18 (2)

RE: Altec 1570 B output transformer - autospecialty 08:08:46 07/29/18 (1)

RE: Altec 1570 B output transformer - Caucasian Blackplate 08:13:32 07/29/18 (0)

RE: Altec 1570 B output transformer - Cleantimestream 12:46:29 07/26/18 (0)

Follow Ups

RE: Altec 1570 B output transformer - Caucasian Blackplate 20:24:04 07/28/18 (4)

RE: Altec 1570 B output transformer - autospecialty 23:26:10 07/28/18 (3)

RE: Altec 1570 B output transformer - Caucasian Blackplate 07:09:38 07/29/18 (2)

RE: Altec 1570 B output transformer - autospecialty 08:08:46 07/29/18 (1)

RE: Altec 1570 B output transformer - Caucasian Blackplate 08:13:32 07/29/18 (0)

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