Search found 2036 matches

by angelodp
Thu Nov 30, 2023 11:16 pm
Forum: Garage Talk
Topic: where are my glasses
Replies: 6
Views: 2106

Re: where are my glasses

La vecchia e brutta
by angelodp
Thu Nov 30, 2023 4:29 am
Forum: Garage Talk
Topic: where are my glasses
Replies: 6
Views: 2106

Re: where are my glasses

How about the 'where is my iPhone' as you hold it in your hand....done that one?
by angelodp
Sat Nov 25, 2023 9:44 pm
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

Ok so back to this amp. Just to be clear this schematic is not exactly what I have. The amp has two inputs with 6AU6-A's as the pre-amp stages. I have converted one of the preamp stages (the 6AU6) to triode operation. The screen is to the anode with a 100R, suppressor G to the cathode, and I have a ...
by angelodp
Tue Oct 17, 2023 5:12 pm
Forum: Garage Talk
Topic: Figured some of yall might enjoy this
Replies: 10
Views: 3068

Re: Figured some of yall might enjoy this

1972 at Max's, was invited to the show. Later backstage they asked what I thought. Like an idiot I complained that it was all too loud and could they dial it back. Skunk gave me a look like he could "kill me". But it was exciting and great.... just very very loud.
by angelodp
Mon Oct 16, 2023 11:03 pm
Forum: Garage Talk
Topic: Figured some of yall might enjoy this
Replies: 10
Views: 3068

Re: Figured some of yall might enjoy this

Cbass, love SD. More of my checkered past..... I went to junior high with Walter, he was a child prodigy. He came to school one week and could play all of the Beatle songs we were all listening to. Cut to my college days and a buddy of mine was throwing a dance party and Walter showed up with the so...
by angelodp
Thu Oct 12, 2023 10:45 pm
Forum: Garage Talk
Topic: I like this guy.
Replies: 8
Views: 2565

Re: I like this guy.

http://www.frets.com

I am sure you have seen Frank Fords work over the years. Talk about jig making.
by angelodp
Wed Oct 11, 2023 7:33 pm
Forum: Garage Talk
Topic: I like this guy.
Replies: 8
Views: 2565

Re: I like this guy.

Good stuff thanks.
by angelodp
Mon Oct 09, 2023 8:52 pm
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

Hmmm, just tried the MV there and not sure I love it. Seem to be getting blocking distortion... from the preamp section as I try to dial in a nice breakup. This being a PA system, this could be a futile effort.

Thanks Steve for your input.

A

PS yes your drawing was very helpful
by angelodp
Mon Oct 09, 2023 7:42 pm
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

sluckey wrote: Mon Oct 09, 2023 6:54 pm Any pre PI MV will allow you to crank up the preamp for front end overdrive. Then dial the volume down with the MV.
Does the 470k just before the PI look like a reasonable spot? Might you have any references from one of your builds for that style MV?

Thanks A
by angelodp
Mon Oct 09, 2023 6:57 pm
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

Ian, when you say "from the book" I am looking at Valve Wizard, is it the floating paraphase you are referencing? No. It's just a plain and simple paraphase inverter, exactly like the one at the top of this Wizard page... http://www.valvewizard.co.uk/paraphase.html Yup .. I guess I do not understan...
by angelodp
Mon Oct 09, 2023 6:47 pm
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

Sluckey... from a thread over on EL34.... "You have a paraphase inverter. It's not gonna like any of the post PI MVs. About all you can do is put a standard volume pot in front of the PI." On this amp I am working on, would an addition of a volume (Master) pot right in front of the PI allow for brea...
by angelodp
Sun Oct 08, 2023 5:52 pm
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

Hello -- Actually that PI circuit is classic "from the book" paraphase dual triode, just strangely rendered and therefore at first glance looks to be an oddly misused pentode. Best .. Ian Ian, when you say "from the book" I am looking at Valve Wizard, is it the floating paraphase you are referencing?
by angelodp
Sun Oct 08, 2023 5:23 pm
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

Can a paraphase inverter take the PPIMV setup?
by angelodp
Sun Oct 08, 2023 1:58 am
Forum: Garage Talk
Topic: Tom (Structo)
Replies: 33
Views: 12884

Re: Tom (Structo)

Tom, great to see you back. How goes it? Anything on the bench.

Ange
by angelodp
Sat Oct 07, 2023 3:47 am
Forum: Technical Discussion
Topic: McGohan M20 Amp
Replies: 20
Views: 6441

Re: McGohan M20 Amp

2 un-used 6AU6 tubes. Maybe tremolo like the Silvertone and a one tube Reverb? Looking into it.