Bernard Raunig - Tube Pre Amp

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modman
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Post by modman »

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BurgerCrisis
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Post by BurgerCrisis »

The fuck kinda tubes are those?

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plush
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Post by plush »

BurgerCrisis wrote: 11 Jul 2020, 03:14 The fuck kinda tubes are those?
Those seem to be your ordinary ecc83/12ax7 with vintage style shields on them

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modman
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Post by modman »

Bernard Raunig aka Bernie was they guy who, according to internet lore, started converting the little tube amps in Bell&Holl Filmosound projectors into guitar amps. But he only did a few for musician in Toronto area, then dissapeared from the scene...
He seems like a smart guy. Everybody wants to be successful, but if that means soldering up the same TS, the same Filmosound, the same handwired Champ every day of your life, I'm not sure whether that brings happiness.
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marcao_cfh
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Post by marcao_cfh »

Nice build. And nice story, he does seems like a very smart guy. I did some research on his story, and now I'm very curious on that circuit.

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Post by ppluis0 »

The engraving in the front face of the aluminum box suggest me that this is the pcb layout of this thing...

Very defying to draw the schematic from that layout :hmmm:

BTW in the second image posted by Modman we can see a couple of green leds (probably wired in anti-parallel) acting as clippers.

Probably this pedal is similar to a Nady TO-2 :roll:

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soulsonic
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Post by soulsonic »

I definitely think those are clippers. Maybe it's a JCM900 preamp clone. :lol:
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Post by ppluis0 »

soulsonic wrote: 14 Jul 2020, 04:36 Maybe it's a JCM900 preamp clone. :lol:
A JCM900 preamp is worse: have a diode bridge shorted with another diode... :)

The assumption that Mr Raunig cloned a Nady TO-2 is due have bass and treble potentiometers.
If were another type of preamp using the classical tonestack, why discard to use the mids pot ?

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Post by drewl »

modman wrote: 13 Jul 2020, 08:29 Bernard Raunig aka Bernie was they guy who, according to internet lore, started converting the little tube amps in Bell&Holl Filmosound projectors into guitar amps. But he only did a few for musician in Toronto area, then dissapeared from the scene...
He seems like a smart guy. Everybody wants to be successful, but if that means soldering up the same TS, the same Filmosound, the same handwired Champ every day of your life, I'm not sure whether that brings happiness.


That's funny, back in the 80's I bought a Bell projector amp from an old salesman at work.
Coworker told me it was to amplify projectors like he saw in the military.

Mine was just a power amp, damn near identical to a Tweed Deluxe power section, with two big old coke bottle 6L6's and a sweet 16ohm Alnico speaker I used to use with my 73 50w Marshall, don't know how I didn't blow it up.

Anyway, I installed a simple preamp with one 12AX7 and it sounded awesome.
That was back in the late 90's.

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