Search found 615 matches

by Gold
Fri Aug 02, 2019 2:39 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

I have the fader after the bridged T attenuator. 30-40 ohms is throwing off the termination and therefore the gain steps. I could put the fader before the bridged T attenuator. I suppose 40 ohms is a low enough source impedance not to cause problems. I just got some more documentation it says the to...
by Gold
Thu Aug 01, 2019 3:24 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

Dale Manquen's son Luke took over MANCO. I have a correspondence going but I'm getting less optimistic by the day. He didn't seem like he knew the answer of the top of his head. The spec sheet makes no reference to minimum series resistance. I'm still trying to get a quote for the TKD rotary faders....
by Gold
Wed Jul 31, 2019 5:17 pm
Forum: The Peabody Lounge
Topic: home improvement turns into science fair projects?
Replies: 123
Views: 6731

Re: home improvement turns into science fair projects?

I meant a Neumann lathe. It’s no more than a couple of hundred pounds. I don’t think I’d even attempt to put a Scully in there. Too heavy. Studer A80 2 tracks are fine. 24 tracks no way. The minivan also doubles as a closet. I live in a 4th floor walk up and the studio is packed. I might as well get...
by Gold
Wed Jul 31, 2019 4:47 pm
Forum: The Peabody Lounge
Topic: home improvement turns into science fair projects?
Replies: 123
Views: 6731

Re: home improvement turns into science fair projects?

I drive a minivan for much the same reason. It's a 2008 but its just coming up on 100K miles now. It's a Honda so it should make 200K without breaking a sweat. Cosmetically it's pretty rough but mechanically it's good. I've kept up with the maintenance. I end up having to move audio equipment on a r...
by Gold
Mon Jul 29, 2019 4:47 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

Maybe this deck is a different value from all the others? Talk to P&G? I don't think so. The smallest value I get on any of the decks at the top of the throw is 25Ω. On the deck I played with the smallest value I could get was 37Ω and that was very touchy. I can't consistently get that value. It's ...
by Gold
Mon Jul 29, 2019 4:08 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

I'm not throwing good money after bad. Once it's dis assembled it's easy to see the construction method. I clamped the shaft so it wouldn't move and very gently rotated the disc after loosening the set screw. 37Ω was the smallest value I got on that deck before it went open circuit. So far the small...
by Gold
Mon Jul 29, 2019 3:32 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

I played with it a little and I'm not hopeful. The smallest amount of resistance I can get on this deck, at the top of the throw, by rotating the brass disc with the wipers, is about 37Ω. This is the most accessible rear deck. If I can't even get the first deck I try to behave I'm not hopeful about ...
by Gold
Mon Jul 29, 2019 2:55 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

I'm not sure I want to become an RF-15 expert. I can see a day or two disappearing trying to fix these. I have a quote coming for TKD's. If the TKD price isn't too bad I'll just bite the bullet. I can use these elsewhere if they require a bunch of attention. Finding the sweet spot by experimentation...
by Gold
Mon Jul 29, 2019 2:15 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

I popped the back on this and took a look. I think I see what's going on. The shaft is smooth without splines. The wiper is two small fingers. The wiper is attached to a brass disc which sits above the stationary resistive track. The brass disc is held in place by a set screw that pushes against the...
by Gold
Sat Jul 27, 2019 5:12 pm
Forum: Pro Audio Design
Topic: T Attenuator Termination Kluge
Replies: 42
Views: 8298

Re: T Attenuator Termination Kluge

mediatechnology wrote:
Sat Jul 27, 2019 2:29 pm
Something just doesn't seem right about the 700Ω or 25Ω wiper resistance.
Were these new when you bought them?
I agree something isn't right. I bought them new from Dale Manquin who is no longer with us. I'm going to attempt to dis assemble one and see what happens.