Bottlehead Forum

General Category => All things MagneQuest => Topic started by: thekak on January 11, 2022, 10:52:50 AM

Title: Looking to buy BCP-15 and EXO-45 or EXO-46
Post by: thekak 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!

Title: Re: Looking to buy BCP-15 and EXO-45 or EXO-46
Post by: Paul Birkeland on January 11, 2022, 11:37:22 AM

https://bottlehead.com/product/iron-upgrade-kit-for-s-e-x-kit-2-0/ (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.

Title: Re: Looking to buy BCP-15 and EXO-45 or EXO-46
Post by: Paul Joppa 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.

Title: Re: Looking to buy BCP-15 and EXO-45 or EXO-46
Post by: thekak on January 11, 2022, 06:18:33 PM

Thank you for the suggestions! I already stumbled on the Sowter OPT.