45 SET

[IslandPink]

I just went passive with a very good last cap on the PS ( did |i mention that it's a Black Gate WKZ ? )
I thought about this and concluded that by 200Hz , almost all of the demand will be taken up by the final cap.

[simon]

Hmmm, wise words I think.

[IslandPink]

There's a lot in here, page 3 is where I made the decision about the power supply -
https://www.audio-talk.co.uk/phpBB3/vie ... r&start=30

Later on somewhere around page 7 or 8 is where I had a U-turn about the driver and went for a pentode.

[Nick]

Yep, my suggestion would be simplicity. A lot of the problems that we have all these complex solutions for just don't exist for a 45.

[andrew Ivimey]

Bugle was dead good but ... thinks... the 45se with the triode of an ecl82 and the pentode as ccs for the 45 - that was my fave rave.

Where on earth did it come from!?

[pre65]

Bugle was dead good but ... thinks... the 45se with the triode of an ecl82 and the pentode as ccs for the 45 - that was my fave rave.

Where on earth did it come from!?

Gordon Rankin ?

You sold it to me, I sold it to Mo (remember him ?) and I believe he had it modified, but I forget the details.

[simon]

Well I'd just about made my mind up to build a Bugle but I do have some ECL82 somewhere, have either of you got the circuit per chance? I'd be interested to see the CCS.

[andrew Ivimey]

Was it a 'Rankin'? ... coming back to me ..... Mo used px4s and one went 'spung'. ( know the feeling) however I will have notes somewhere; like Bugle it may have originated in 'Sound Practices'.

Simon, I haven't got time this weekend. I too have some gorgeous ecl82s and enough 45s so I'm tempted myself. Can't remember the psu details at all tho'.

[simon]

I'll have a further Google and see if I can find it Andrew, but no probs, when you get chance would be appreciated.

(I remember Mo badgering you for the 45PP but don't recall you ever building ECL82 45.)

[Nick]

I have a 45 amp somewhere in the historical pile that is Mo's I will drag it out.

[Nick]

This one

[andrew Ivimey]

As Phil said, I passed it on to him! Who passed it on to Nick...

[andrew Ivimey]

Erm.... that one looks familiar; the pio caps but I don't remember the curves - dunno tbh but I did have a massive pio phase.

[simon]

Blimey there looks to some serviceable stuff there! Can't see any ECL82s though?

[pre65]

That looks like the one folks.

It came to me sans output transformers, and I fitted the James ones (6123HS ?) that still seem to be on it.

I can see (what look like) one ECL82.