Bottlehead Forum

Bottlehead Kits => Legacy Kit Products => Paramount => Topic started by: gsharri on September 03, 2022, 01:54:47 PM

Title: How to identify output transformer wiring
Post by: gsharri on September 03, 2022, 01:54:47 PM
I recently purchased a pair of Paramount 300b amps. I am not sure how the output transformers are wired (4,8, or 16 ohms). Is there a manual or diagram available?
Thanks
Scott
Title: Re: How to identify output transformer wiring
Post by: Paul Joppa on September 03, 2022, 06:00:28 PM
Yes, there is a short (one page) document on that transformer. I have attached it in PDF form. It shows the wiring for a 4-8-16 ohm switch using a 2-pole 3-throw switch.
Title: Re: How to identify output transformer wiring
Post by: Paul Birkeland on September 03, 2022, 06:29:03 PM
This is the most likely configuration.
Title: Re: How to identify output transformer wiring
Post by: gsharri on September 06, 2022, 08:05:15 AM
Thank you both!
I purchased these from Gig Harbor Audio last week. Erik, there, told me they had been "modified by Paul at the factory" but didn't say when that occurred. Would that be one of you?
Scott
Title: Re: How to identify output transformer wiring
Post by: Paul Birkeland on September 06, 2022, 08:35:43 AM
Yes, I changed them to use the 6LU8 after using them for a few years.