Two Box 260 - Progress report
- Thread starter Basil
- Start date
That is very helpful, cheers Graham.
What're you using for the power rail cap?
BTW where are you linking the pics, they're up and down like a whores draws!
Mus, I was being serious about the "Dead" I recently D/L one of their live concerts (Oct '90, from Wembley) and you're welcome to a copy, if it's your thing, that is. That offer goes to everyone who's helped me over the last couple of weeks.
What're you using for the power rail cap?
BTW where are you linking the pics, they're up and down like a whores draws!
Mus, I was being serious about the "Dead" I recently D/L one of their live concerts (Oct '90, from Wembley) and you're welcome to a copy, if it's your thing, that is. That offer goes to everyone who's helped me over the last couple of weeks.
You mean adjusting the Hicap to 30v, I am tempted, but my 72 is 15 years old and very dear to me, so I think I'll pass on this one.
Translation: That looks really neat, any chance you could post a picture of the other side, so we can criticise your soldering!
Just my little joke.
A few days ago I dug out the old 90 pcb, and to my horror, the 317 reg was missing! Just three tiny stumps left on the board.
Incredibly, I actually found the remains of the regulator on the floor, (I know, I couldn't believe it either) and in a feat of soldering legerdemain, re-attached it...
Stone me! It works perfectly. A nice steady 24.9v, a little higher than before but that's down to the fact it's no longer powering the LED.
Takes a lickin' an' keeps on tickin'! Pity the rest of the 90 wasn't as rugged!
Jon,
Splitting the amp into two boxes (an NCC200 and Cap6 in each) allowed the use of the proper A260z transformer.
With both pairs of NCC200's and Cap6's in one box, Les thought it safer to limit the transformer to 350VA instead of the standard 260 transformer, which is 630VA, because of the limited cooling of the half width Naim boxes.
It's difficult to pin down changes as I split the amp at the same time as I fitted the new transformer but my immediate impression was of a tighter, better focused central image, especially with solo vocals and instruments and a greater sense of "ease" at higher volumes.
Splitting the amp into two boxes (an NCC200 and Cap6 in each) allowed the use of the proper A260z transformer.
With both pairs of NCC200's and Cap6's in one box, Les thought it safer to limit the transformer to 350VA instead of the standard 260 transformer, which is 630VA, because of the limited cooling of the half width Naim boxes.
It's difficult to pin down changes as I split the amp at the same time as I fitted the new transformer but my immediate impression was of a tighter, better focused central image, especially with solo vocals and instruments and a greater sense of "ease" at higher volumes.