Category Archives: audio

RCA transistors score

 

RCA 2N408 germanium transistors
  
RCA 2N2613 transistors: low leakage and good hfe range
 

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Germanium Mosrite Fuzzrite

On eyelet bakelite board.. Those transistor were just a temporary arrangement and off they went once i scored some RCA 2N2613 and 2N408 (as per original pedal).

Here’s the video of the final build.


The sound of garage rock!

Messin with the Klon

Yesterday i was busy making two Klon Centaur clones.

Months ago i bought the last two Chimaera pcbs from the cat over at Grind Customs Fx.
Very well made boards i must say.
I got me some 50 x D9E germanium diodes, the latest darlings of klon builders the world over and plunged into this build, keeping in mind and on the bom the latest (2014) discoveries by the byoc guys on the silver klon (the golden enclosure came first, the silver came later, improving on tone and volume control).
Elna electros, philips, greenies, etc caps.
Metal and carbon film resistors, 1590BB build #1:

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I had to lower the value of a 20k log pot down to 10k for the volume knob using a resistor across pins 1-3.
This was made for my friend Luca.
Next, it’s mine:

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Same caps n resistors chan pon here.
This time to make the volume pot a log, i used a 10k lin, a 2k resistor from pin 2 to ground.
Same blue minotaur lsd blotter art employed..

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On the first build, the gain pot would run funny: regular until 3/4 its taper, then volume would drop.
Heres what i found out about the klon:
YOU MUST audition/measure LOADS of TL072 to get the right balance of clean/gain/volume in general. I have some Texas Instruments and some ST, all of the TI sounded way too “weak”, alas noise would slip through, not enough power, etc. ST’s are better but still, you have to choose the right ones. I did this by ear.
Good TL072s are the secret to this pedal: i tried a bunch of germanium diodes: lots of the aforementioned russian ones, both matched and unmatched, but also Valvo OA81, OA91, RL32S11, AAY22.. guess what? They didnt impart any specific tonal character to the pedal.

As it is, the Klon is a good, clean, very musical buffer/overdrive.
Without a strung out, breaking amp though, i have my doubts it would save the day.

I prefer the good old dirty Rangemaster to the Klon i suppose.

bea!
yours truly

MJM London Fuzz

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MJM London Fuzz build..

Ancient stuff on this one. Check q1! CV7003, a mil spec OC44.. All rusty and battered. BUT STILL KICKING!

I dig the germanium London Fuzz. So just in case mine blows up, heres a backup.

LISTEN:
http://m.soundcloud.com/masutomasuto/london-fuzz-clone

I have lived in London for something like almost 5 years.. had a great time but then I grew bored with the city and the lifestyle.
video of Alle Royale and Emiemiemi of Greasy Spoon testing my London Fuzz!

bea!
yours truly