Search found 2133 matches

by metasonix
Sun Jan 17, 2021 2:08 am
Forum: Metasonix
Topic: JOHN KELLEY FROM PORTLAND
Replies: 1
Views: 298

Re: JOHN KELLEY FROM PORTLAND

thank you, item sent back
by metasonix
Wed Jan 13, 2021 12:07 am
Forum: Metasonix
Topic: JOHN KELLEY FROM PORTLAND
Replies: 1
Views: 298

JOHN KELLEY FROM PORTLAND

PLEASE CONTACT ME
by metasonix
Wed Jan 13, 2021 12:07 am
Forum: Metasonix
Topic: RK3 and RK4
Replies: 69
Views: 10574

Re: RK3 and RK4

looking to pick up a rk3 - anyone have good experiences with these in a tiptop mantis? should be well under the 3A/1000mA for +12v at startup, but i’m slightly cautious at how the power is distributed to the ‘zones’. thanks! A Mantis supply should be okay. Just don't try to use an old Happy Ending ...
by metasonix
Wed Jan 06, 2021 9:53 pm
Forum: Metasonix
Topic: Metasonix R series with nanas videos
Replies: 3
Views: 122

Re: Metasonix R series with nanas videos

thank you sir--reposted on FB
by metasonix
Sun Jan 03, 2021 10:24 pm
Forum: General Gear
Topic: Minikey keyboards with many octaves
Replies: 5
Views: 127

Re: Minikey keyboards with many octaves

Buy 2 and set them for different octaves....otherwise I doubt it will happen.....
by metasonix
Sun Jan 03, 2021 2:39 am
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

I put this on Facebook but it's too funny not to share here..... Ever wonder where all those subminiature tubes were used? In monstrosities like the AN/ARC-65 aircraft radio. This is only the radio "chassis", in its sealed and pressurized canister. There was also a big ugly control box, an antenna t...
by metasonix
Mon Dec 14, 2020 6:55 pm
Forum: Metasonix
Topic: More schematics
Replies: 22
Views: 1439

Re: More schematics

TM3 VCO schematic
TM3schem.jpg
by metasonix
Thu Dec 10, 2020 4:51 am
Forum: Metasonix
Topic: D2000 opinions/experiences.
Replies: 50
Views: 5556

Re: D2000 opinions/experiences.

just sent two D2k to Detroit Modular--give it a few days to arrive....
by metasonix
Thu Dec 10, 2020 4:43 am
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

The Pingen Detector. A tube so obscure it's not listed in Tyne, Stokes, or any other book about early electronics that I can find. Made in Toledo, Ohio, by a company that apparently lasted less than a year (1922). People yammer about the "big hits" but no one keeps track of the misses.
Pingen2a.jpg
by metasonix
Tue Dec 08, 2020 2:57 pm
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

Tube and radio collectors know the name Blue Bird very well. Two well-known radios carried the name. Less well known was the Blue Bird tube company, who made their own offbeat types and went out of business in 1931. (Note the typo on the box, and don't bother Googling this.)
bluebird.jpg
bluebird.jpg (86.47 KiB) Viewed 151 times
by metasonix
Tue Dec 08, 2020 2:52 pm
Forum: Metasonix
Topic: D2000 opinions/experiences.
Replies: 50
Views: 5556

Re: D2000 opinions/experiences.

On thing I'm curious about -- can the Drum/RK4 circuit filter audio yes but it's not a really good sharp filter. We use it because it requires one tube, and power consumption is one of our biggest problems. As I've said before (and you probably missed): we could make an all-tube diode ladder filter...
by metasonix
Mon Dec 07, 2020 6:19 pm
Forum: Metasonix
Topic: D2000 opinions/experiences.
Replies: 50
Views: 5556

Re: D2000 opinions/experiences.

PS: don't sell yours, we discontinued it. Only 5 left and all spoken for by dealers. It's becoming too difficult to build and I'm having trouble finding reliable suppliers for certain things.

If you want to build something similar, get three RK4s and two cymbal modules.
by metasonix
Thu Dec 03, 2020 10:37 pm
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

What was a World War 1 "aircraft radio" like? It was like this SCR68. Imagine flying a plane, being shot at, and having to also communicate via radio. Using Morse code. Why are the transmitting tubes inside the main tank coil? There must have been a reason--however insane. it's generally a bad idea....
by metasonix
Thu Nov 26, 2020 4:59 pm
Forum: Metasonix
Topic: More schematics
Replies: 22
Views: 1439

Re: More schematics

FatRocky wrote:
Thu Nov 26, 2020 10:44 am
do you have schematics for this
Sorry can't remember, I think it was a modified TM5 or something in that area.....Zerosum did what he did, I didn't save any schemas
by metasonix
Thu Nov 26, 2020 4:35 pm
Forum: Music Tech DIY
Topic: 100k input resistance... isn't
Replies: 89
Views: 2441

Re: 100k input resistance... isn't

lol great thread Modern power supplies can source 10s of amps without complaint. And we are STILL getting complaints about people buying one RK module, which drags down their cheap Euro power supply. "It's broken!! You broke my cabinet!" Apart from power amplifiers, speaker crossovers and similar hi...
by metasonix
Tue Nov 24, 2020 9:12 pm
Forum: Metasonix
Topic: More schematics
Replies: 22
Views: 1439

Re: More schematics

Old filter circuit used in Wretch. Similar scheme was in the TS22 and TM2 and R-52.
(Bass version used 0.01 and 0.022 capacitors in the feedback loop)
TM2-Wretch-R52filter.jpg
by metasonix
Sun Nov 22, 2020 4:01 am
Forum: Metasonix
Topic: More schematics
Replies: 22
Views: 1439

Re: More schematics

I finally found the TM7 schematic. Took hours of digging in boxes. Thank me any time.
TM7schem.jpg
Compare to the TM5. Shocking how similar they are, eh? It's disgusting.
TM5schematic.jpg
by metasonix
Sat Nov 21, 2020 10:22 pm
Forum: Metasonix
Topic: More schematics
Replies: 22
Views: 1439

Re: More schematics

not posting any more schemas until someone fixes this goddamned forum. It kicks me out when I try to do a search or stay logged in for more than 15 minutes....
by metasonix
Wed Nov 18, 2020 9:49 pm
Forum: Metasonix
Topic: R-56 reverb module
Replies: 229
Views: 38276

Re: R-56 reverb module

here's Rocky's module. now if we can just figure out return shipping.....
Rico-r56front.jpg
by metasonix
Mon Nov 16, 2020 6:45 pm
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

"I have never before seen such a complex 5” CRT. It is a 54DGP11 and is about 18” long. It has 4 guns with 27 pins on the 3.5” diameter base. There are 16 caps around the tube and there are two separate HV anode connections. There is hardly anything on a Google search. I know the P11 is fast but wit...
by metasonix
Sun Nov 15, 2020 3:29 am
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

QK496 magnetron, used in a radar jammer (thus the "Confidential" sticker). Dan Stocks in Australia found this one. Apparently its frequency range makes it perfect for jamming the Wi-Fi band, if someone is so inclined.....
QK496-1.jpg
by metasonix
Fri Nov 13, 2020 1:23 am
Forum: Metasonix
Topic: Should we keep making F-1 pedals?
Replies: 30
Views: 5087

Re: Should we keep making F-1 pedals?

totally different circuits but roughly the same--a preamp with a lotta gain and adjustable feedback to make it unstable.
Sounds awful, don't buy it.
by metasonix
Tue Nov 10, 2020 4:35 am
Forum: Buchla, EMS & Serge
Topic: Old EMS/Synthi Forum archive
Replies: 106
Views: 2953

Re: Old EMS/Synthi Forum archive

Hmm. That explains everything. I started this post and now I have changed my mind now knowing this. If only ten people were allowed after 2009 then good riddance. No wonder it didn't get "foot traffic". That's not all---the owner also had a robots.txt file that blocked search engines and archive.or...
by metasonix
Tue Nov 10, 2020 4:02 am
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

This Thomson-CSF tube is from a 120 kW transmitter. Filament uses 35 volts at 575 amps. The anode at the bottom has to be put in a giant water-cooling jacket (distilled only!) and the upper stem has to be forced-air cooled. All isolated from ground electrically because there can be 20 kV on the anod...
by metasonix
Sat Nov 07, 2020 8:25 pm
Forum: Metasonix
Topic: General thread of obscure old tech
Replies: 56
Views: 3062

Re: General thread of obscure old tech

Phil Florig shares some of his largest tubes:
IMG_0522.JPG

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