audio-talk

The worst thing we had to control was pressure of argon in a 3m * 5m * 2m pressure vessel. This was on the plattens of a hydraulic press heated up to 600C (the platterns had three racks full of pid controllers and thyristor power controllers controlling the individual zones). The input valve was tin...

The TD4 controller has a "learn" mode that auto-tunes That will be using one of the algorithms I mentioned. I would let it try that and use the parameters it finds as a starting point. It will probably turn the output on and let it ramp up way past the setpoint, so make sure there is noth...

Also, given that I assume you only have a on off output (I finally read the rest of your post), 50% output is going to look like what you describe. Maybe work using more I than P in those situations, but that will tend to make the output waver around the setpoint. I would think about using some meta...

Turn I and D to 0. turn up P until it just starts to oscillate. back P down 25%. Then turn I up until it starts to overshoot. Turn down 20%. Turn up D just so you feel you are getting your moneys worth, but in my experience unless you have a fast system with a rapidly moving setpoint it won;t matter...

Unrelated loudspeaker question that occurred to me. has anyone taken a electrostatic bass panel and put it inside a sealed box or a port loaded one?

Didn't he call his butler "Scrotum" because he was his wrinkled old retainer? "Scrotum, the wrinkled retainer" was the exact quote if I remember. As always the original radio and then LP was IMHO far better than the film as to me the joy of it was its (his) use of language. That...

Silly bugger's got spiked running shoes on.

I'm perplexed how remastering a vinyl copy of one of your albums indicates thumbs up for streaming your albums ? So would I, but given that you replied to a post (I can only assume the previous post to yours was what you were replying to, given the lack of quotes in your post) that was talking abou...

I don't think Steely Dan would be to impressed . Well, whats left of Steely Dan (I assume you mean the band) seems to have no problem with the process Donald Fagen has overseen a new remaster of Steely Dan’s 1973 LP, Countdown to Ecstasy, which will be reissued on vinyl on May 26 (via Geffen/UMe). ...

I use librecad on Linux. Its not perfect, but my requirements are small.

This was a good Chick Corea tribute that has loads of references for you to check out.

Well, you could justifiably argue that all of Return To Forever would count as a Corea LP. But try working into his extensive catalog via Chick Corea The Chick Corea Elektric Band.

Does the top-end sound a bit duff, Ed ? It doesn't look like much , but I know from the current-sourced filament supply project a few years ago with Nick and Andrew that small phase rotations up there can make or break the sound. Though I am not sure how we can know that that effect in a heater sup...

Yep. I will find them. Drop me a pm with the address.

Hope it all goes well. Sound like another bit of medicinal technology that has improved vastly over the years.