I now have the SECA 40 watt boards, a limited run of 12, 4 of which I will be using myself.

The circuits and BOM will be available as soon as I have checked them against each other.

James - two of the boards are ear-marked for you. Do you have Colin's notes on the build - not sure if he also lost these.

As a note the speakers at my house are Infinity RS3Bs, I took out the original cross-over and rebuilt using all new components but excluded the mid/tweeter pots and fuses. They were re-wired with some prototype speaker cable. I also changed the base-boards as they were not in a good state, at some point I may have a look at the bracing (or lack of it). Now if someone has some RS2Bs they want to let go......

I will come up with some prices and details of any components I can help supplying.

Back to James's amplifier - I could listen to it until the cows come home - it was a pity he had to take it home with him.

If wanted I can start a new thread to help anyone wanting to build these beauties.

More details when I have them - and some pics of the boards.

I found the copy of the notes I did for James so I will send them to Alan.

I have these custom made toroids that I was going to use for another project which I have now ditched. They are currently custom made 350Va on a 500Va iron. and the secondaries are 15-0-15v. For the new 40W SECA they need to be 22-0-22. So I am sending them off today to be adjusted. However whilst they are being re wound I have asked for them to be changed to 500Va - Bonkers I know but I have always had a thing for big toroids, as if these aren't already big enough.


However, the toroids would need to be completely rewound and use a higher flux density - so they would no longer be audio grade if I wanted 500Va, I can get them to around 425VA and they will still be audio grade (but not as good as the 350Va TM897A I have now), and the need to completely rewind them as thicker primary wire will be required.

Not entirely sure what to do, Im sure Colin will just slap me on my bald spot and tell me to leave the rating at 350Va and the fact that they are custom made using excellent quality materials rather than what you can pick up off the shelf, and they are on a 5Va iron , I should leave as they are and just have the secondary voltage increased to the 22v needed.

🐂🐂🐂

Wrong thread 

Hi James, I missed your call I tried to ring back but you had gone silent mode. Is all OK I do not understand this last part of this thread, I am home today with a few wee problems, so call me.

This thread really is going far and wide, still amazes me how the internet pulls the widest spectrum of people together.
I have been carrying out a few upgrades to my system and the more i do the more I realise whole thoroughly satisfied I am with this amp. I liked having the only amp of its kind in existance, but I'm glad you went to the trouble to make more boards available to others.

It is sad to say this for me.

Molly James wife want to sell all of James kit including the first 40W SECA I designed.
James made his with a little help from me, it was fun to see him progress so well, Molly has some bits to make a second but the first is for sale. When I sea her on the 10th of May at a celebration of James life I will arrange for photos.
If anybody would like to buy this unique amplifier please contact me.
EWA will be making a 50W version of this amp which will more but this 40W Sovereign SECA and it twin will be rare and precious.

All the monies from the sale of James kit will go to help support Molly and James daughter Chloe.
They are both being very brave along with James family with spiritual support.

You can send me e-mail's direct this will mean I see you response early.

Many many thanks.

Col

Also his DDAC came on Monday so Molly says.
Shame he is not able to build it like he did other kits some whilst in hospital, he had charm, my stay hospital I could no have even have a PC. He got soldering iron tools what charmer he was.