Search found 485 matches

by emrr
Sun May 13, 2018 8:00 am
Forum: Build
Topic: Wayne's Mic Pre photos (By Joe Neil aka Bruno2000)
Replies: 9
Views: 24372

Re: Wayne's Mic Pre photos (By Joe Neil aka Bruno2000)

I sure hope Joe's equipment continues to be used in a next chapter. He built so many cool pieces.
by emrr
Fri May 11, 2018 12:03 pm
Forum: The Peabody Lounge
Topic: RIP Joe Neil
Replies: 13
Views: 3025

Re: RIP Joe Neil

This was the first of Joe's builds to get my attention.

viewtopic.php?f=7&t=282
by emrr
Fri May 11, 2018 8:43 am
Forum: The Peabody Lounge
Topic: RIP Joe Neil
Replies: 13
Views: 3025

Re: RIP Joe Neil

Great remembrance Wayne.
by emrr
Thu May 10, 2018 9:43 pm
Forum: The Peabody Lounge
Topic: RIP Joe Neil
Replies: 13
Views: 3025

Re: RIP Joe Neil

Wow, Wayne, that's a long run. I always loved seeing what he was working on, and enjoyed talking to him. I've no idea what happened.
by emrr
Thu May 10, 2018 4:19 pm
Forum: The Peabody Lounge
Topic: RIP Joe Neil
Replies: 13
Views: 3025

RIP Joe Neil

It's just been pointed out that Joe has left us, hate to see you go, Joe. RIP

https://www.legacy.com/obituaries/name/ ... =188613421
by emrr
Thu Apr 19, 2018 8:09 am
Forum: Pro Audio Design
Topic: Dielectric Absorption
Replies: 48
Views: 12290

Re: Dielectric Absorption

clipped in near the tube cathode. Physically near, but in series with the grid in the drawing, the one other reference I checked was a direct heated circuit and there the battery is in series with a resistance between ground and grid, not in series with signal. I haven't messed with these circuits ...
by emrr
Mon Apr 09, 2018 5:57 pm
Forum: Pro Audio Design
Topic: Dielectric Absorption
Replies: 48
Views: 12290

Re: Dielectric Absorption

Found the Mallory grid bias cell and holder. I get a brief 0.3-0.4V reading. 2M4 DCR and climbing. I don't trust those readings.

Image

Image
by emrr
Thu Apr 05, 2018 10:29 pm
Forum: Pro Audio Design
Topic: Dielectric Absorption
Replies: 48
Views: 12290

Re: Dielectric Absorption

In the 90s, my hamfest tool kit contained a 9V battery and a simple DMM to characterize unknown film caps found in the wild. The basic procedure was to charge the unknown cap for five counts, short it for one count, and then measure the recovery voltage. After some training with known samples, the ...
by emrr
Wed Apr 04, 2018 9:12 am
Forum: The Peabody Lounge
Topic: RIP Frances Lloyd
Replies: 4
Views: 1527

Re: RIP Frances Lloyd

Nice to see the history of it.
by emrr
Wed Apr 04, 2018 9:07 am
Forum: Build
Topic: Redco Audio Wire and Cable
Replies: 6
Views: 2550

Re: Redco Audio Wire and Cable

Yep. I ordered one of three panels from the, got it in about 2 months. Ordered the final two later, they'd not kept the design even though I'd told them there were more coming, and I've got nothing.