Looking to buy BCP-15 and EXO-45 or EXO-46

thekak · 6632

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Offline thekak

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on: January 11, 2022, 10:52:50 AM
Hello--

See title for request.

Interested in 2 plate chokes and 2 output transformers for parafeed.

Thanks!



Offline Paul Birkeland

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Reply #1 on: January 11, 2022, 11:37:22 AM
https://bottlehead.com/product/iron-upgrade-kit-for-s-e-x-kit-2-0/

These are a 40H plate choke (close to the BCP-15), and a 4K output transformer that can be configured for a variety of different secondary impedances. 

The EXO-45 is quite difficult to find.  BCP-15 chokes are not as hard to find, but the lower current configuration with the smaller air gap and extra inductance is not so easy to find.

Sowter does have a 5K parallel feed output transformer with some nickel in the lam stack, and they could make you a 100H/40mA choke to go with it that would be lovely.

I believe Monolith Magnetics and Intact Audio could also make you appropriate iron sets.

Definitely avoid the old Sony/Akai 5K tape recorder transformers, as they will be a tremendous bottleneck in this application.
« Last Edit: January 11, 2022, 12:45:14 PM by Paul Birkeland »

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Paul Joppa

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Reply #2 on: January 11, 2022, 11:52:18 AM
The text in that article has a misprint - the driver is a 5965, not a 5963. The parts list is correct.

Paul Joppa


Offline thekak

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Reply #3 on: January 11, 2022, 06:18:33 PM
Thank you for the suggestions! I already stumbled on the Sowter OPT.