Here’s a Heyboer.
https://shop.amppartsdirect.com/collections/transformers/products/marshall-style-50w-output-transformer-apd-8023h-by-heyboer-transformers
He’s been a Marshall/Strat guy for years. He was a rock guy from the early ‘60‘s British Invasion bands. Replaced Eric Clapton in the Yardbirds after Eric left to play with John Mayall. Played with Jimmy Page in the Yardbirds as well and the Yardbirds eventually became Led Zeppelin after Jeff...
My 1987x is not clean past 1 on the high treble channel. At 3 or 4 it was very loud, maybe even louder than my 2203 on 3. It sounded great, no pedals needed for me. But I got complaints about the volume and always had to wear earplugs. I did eventually use an attenuator, a Weber Mass 100 but the...
The Vintage 30 is a 60 watt speaker, it’s not the same as the ones in the 1960av, 1960bv or the 1936v which is a 2x12 cabinet. The Celestion Vintage is a 70 watt speaker and is voiced differently. That’s what appears to be in those Jubilee cabs. They are not Vintage 30’s...