DRIP ELECTRONICS ULTRA BRITISH HELP THREAD

[MidnightArrakis]

To the best of my knowledge based on what David Garen told me, Cinemag has all the suitable historically accurate transformers. These quotes are from a few months ago so I assume are out of date. At the time of these quotes all 8 transformers could be had for under 1k (915.04) not including shipping. This is what I plan to use:
2x CMMI-7C ($76.31)
2x CM-9661A-H (high-nickel laminations - $164.34)
2x CM-13102 ($62.65)
2x CM-16402 for $154.22.

Hope this is helpful.

I am a bit confused!!! Are these CINEMAG transformers for the ALTEC 436C Compressor? Or, for the REDD47? Can you let me know?

I am interested in building the ALTEC 436C and any information/parts/schematics that you may have on this unit will be very highly appreciated. THANKS!!!

/

 

[Roel]

Hi Roel, Was wondering if you would be willing to share your front panel design? Curious how the project is going for you?

Hi, sorry for the latency...
But I didn't get an e-mail about this post.

I can upload the PDF but not the FPD-file (Front panel design)

The project sits on the shelf because of no-time-at-all-for-now. The last thing I was trying to accomplish is to get the voltages right but they were all off, even the psu-voltages. Another problem is that there is no support what soever so I don't know where to start looking for solutions so it will be a proces of time to get it to work. I will have to find me someone nearby who is a crack in these schematics (because there is no schematic!) and could help me out...
I will post the endresult when I get there, for sure, but when? I don't know...

If you want the fpd-file, I could e-mail it or so...

 

[Tubemooley]

Wow. This is great. Just found this thread. I have the Ultra British boards. I bought all 8 Sowter trannie's for Christmas 2019 right before the covid set in. I have the Hammond power transformer and tube sockets and most of the tubes except for the 6386's (yikers, not cheap). I was compiling my BOM for all of the passive components and the few transistors. I have not purchased a case yet but I did extensive research on that. I know I had already looked at the Bud Industries cases mentioned above and they looked promising (proper size). That's was Spring 2020 during the shutdown here in USA. I am swamped right now but I would love to build these PCB's. I never thought about using Cinemags. I bet those CM-16402 outputs are smokin'. Dana.

 

[Dcarrow555]

I am a bit confused!!! Are these CINEMAG transformers for the ALTEC 436C Compressor? Or, for the REDD47? Can you let me know?

I am interested in building the ALTEC 436C and any information/parts/schematics that you may have on this unit will be very highly appreciated. THANKS!!!

/

So sorry for the late reply!! The “ultra British 2019” project implements an amp stage based on the redd47 and a comp stage based on the 436. To hopefully answer your question, these transformers are meant to cover both the redd47 and 436. There are 8 I/O transformers in total… I’ll see what I can dig up specifically about the 436 transformer spec. I want to say cinemag did a lot of work to match these to the originally used by Altec