audio-talk

Fascinating.

I think I can safely say I've had a surfeit!

Just got back from a camping trip in Essex (Moto Guzzi club Essex branch do) that's 3 times I've been to Essex in a week

Two thoughts - 1. If the valves are that precious, maybe some sort of soft start up, a series resistor will probably be enough. 2. Common mode rejection choke type filter where it goes into the amp, lots of suitable CM ferrite chokes and caps on RS site. Google for info about CMR filters.

I'm pretty sure I copied the output cap/resistor detail from the WAD Phono 2/3 design where they used an ecc83 as a cathode follower. OK, so just on the basis the designer can't know what's going to happen to the amp in service, so any kind of screened lead, short-circuit accidents, who knows. So l...

Good lord this goes back a while. :D 3. What is the 1k phono series output resistor doing? I see this is the same arrangement as the WAD Phono but wondering can I remove and what is the risk? Not sure in this case, but in the transistor/op-amp world, it may be provided as some sort of short-circuit ...

Have sent you a PM.

Ed, I didn't read it like that at all. I read it as, just an explanation for anyone jumping into the thread with no clear idea what it's all about.

Info only.

If only for triode mode, has anyone tried tying the screen grid to the signal grid?

Try quotes for fully comp. I've actually found those to be cheaper than just 3rd party. There's probably some twisted logic behind it, but I can't fathom that. Chris I know the answer. Used to use TPFT a long time (old motorbikes), went to renew at some time latterly, seemed even more expensive, th...

How did Paul / Nick heat theirs? (Open question)

I would say, no.

That's what I was thinking of.

So I'm not sure it needs improving.

The noise of the air conditioning system in the foyer of my Renault dealer

It's a bit nippy too

As sublime as Thomas’ OB’s sounded, (And they did - highlight of the weekend for me) those phase plugs did make me think of the Korova Milk Bar... Seems a good spot to say thanks guys, had a great weekend and there wasn’t one single system played that made me think of the kit and forget the music. ...