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I met this little guy again this morning. and gave it RCA Command 5751 as a present. I’ve tried more than a few 12ax7 tubes with this Champ for a while. and love the sound with this 5751. and, one 6v6gt from Valvo factory in Frankfurt is coming to me for this Champ.
the 3rf filter cap is Sprague which replaced the big 8uf 500V Astron minimite last winter. it still has the 2 prong power cord even with the death cap. this 57-year-old Champ is beautiful and sounds great of course. but didn’t sing as much as my ’59 Champ till this morning. now it does sing like a magic.
pictures of the transformers are here
Steve Winwood + Eric Clapton
sometimes, words are like the windows through the history and culture. now I see why we keep seeing the white witches and wizards who are the symbols of wisdom on the movies. and why we have the similar names from the western culture.
I started this build on my personal blogspot blog. then I moved whole the articles on slowbean. I might want to arrange them into one single thread later.
it’s my yokomo Hotdog4 built from YR4 kit with some Works bits, along with Yokomo Esprit stock motor. I’m working on the new shock towers.
MX4 rear CVD bones fits perfect for ’91 through ’93 Works. Hotdog4 has the same arms. and you guys can see the result. the length is same with post ’94 yz10 rear cvd bones.
it’s getting better with some NOS caps and tubes. 50’s Jensen does something of course. VHT standard 12 is a bit bigger than the original tweed deluxe. and I like this cabinet as well. I might try P15N at some point
(Picture by Alexander Gerst from the ISS)
We take good old O2 for granted. People are always going on about how early Earth was “perfect” for life. A perfect hell maybe. No ozone layer, no oxygen, extreme heat, an abundance of highly corrosive chemicals in the atmosphere including sulfur and methane.
Much like found on Titan the largest of the moons of Jupiter today. It was a literal red sky hell. With all of that methane and sulfur, it must have smelled like a frat house on chili and hard boiled egg night. So, the Earth was devoid of oxygen in the beginning but as I said there was a metric butt-load of methane and sulfur in the oceans.
So, little single-celled organisms developed that lived on methane and sulfur. After a while, the sulfur level dropped and the methane level did as well. No one is sure why. There still was little oxygen. So some more little critters evolved which produced oxygen called “cyanobacteria”.
It took a billion years for these critters to terraform our planet for the evolution of animals and more complex plants. To this day all plants incorporate these ancient cyanobacteria into their cells in structures known as a “cyanoplasts”. You see life itself changed the planet to support life.
This is what life does.
More informations to this topic: https://en.wikipedia.org/wiki/Great_Oxygenation_Event
I just tried this from a hunch while I barely understand electric circuits.
Bum fuzz was made after B&M fuzz. it came from Tonebender Jumbo, and Jumbo came from Big muff. and they are not far from Tonebender MK3. it means this pedal would work with Germanium transistors.
Sola Sound make 3 different versions of Bum Fuzz units with BC184, BC549C, and ZTX109. BC184 and ZTX109 versions look same to each other except ZTX109 version comes with better and older electric components. BC549C comes with cheap ass version. and, it has 3 of different resistors and 2 of electrolytic capacitors at least. I replaced them with 33k, 100, and 100k resistors an 2 of 0.1uf fixed caps.
OC139, OC140, OC141 are NPN germanium transistors for computers (yes, the computer) from late 60’s. They are period correct for late 60’s and early 70’s fuzz I guess. and, have the similar Hfe range as well. most of them I found on ebay.co.uk had 100 to 200 Hfe range. some are less than 100, and some of them are over 200.
It’s the shop I found ZTX109 and OC139 transistors
And, this pedal sounds great with OC139. I don’t see any reason to try a different setup anymore. this modified Germanium Bum fuzz unit has overdrive to medium or leather high gain fuzz range now. somewhat sounds like MK2 and feels like MK3.
It was like this a couple of months ago
Came across this big red bum fuzz here on reverb.com
Sola Sound / Macaris sells a few different versions with different components along with the pricing. this one is a literally cheap, actually the cheapest version of them. they had/have more coming as well.
They have 3 different versions by the price. £399.00, £349.00, and £149.00. then I paid $29 for international shipping. mine is £149.00. it was $195 shipped to South Korea.
£399.00 and £349.00 versions come with the reliable components like Cliff jacks, Carling(could be Arrow H&H) DPDT footswitch, Omeg potentiometers (2 of log B 100K, 1 of linear A 100K), and better caps and resistors.
They put Zetex ZTX109 transistors on £399.00 version with better caps, even with the NOS carbon composite resistors, and probably with some tweaks.
£349.00 Bum Fuzz Unit comes with BC184 transistors. £149.00 version comes with the same transistors as far as I know. (update – this pedal came with BC549C known as a substitute for BC184)
But, £149.00 version has, as the name, cheap components include the plastic molded pots. the pots feel not good. but they still came from Piher at least. it has more unknown parts like 1/4″ jacks, footswitch, knobs, and ceramic caps.
I believe I can change some of the parts using the pics on Macaris.co.uk and Reverb.com. The schematics for Jumbo Tone Bender and B&M fuzz are on the web.
I’ll update with some mods and samples. here are the pictures