FAL - Treble booster from 1967  [schematic]

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
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Post by pinkjimiphoton »

hey guys, i just bought this on ebay for 20 bux...

https://cgi.ebay.com/ws/eBayISAPI.dll?V ... SA:US:3160

anyone know anything about it? i know the board has been replaced, gonna hopefully find a schematic so i can make an appropriate clone of the original circuit.

found it on discofreq's website, with a great gut shot.

Image

any info anyone can help me with is appreciated!!

http://www.effectsdatabase.com/model/fal/treblebooster

here's the shot inside the one i bought...absolutely not the same circuit, and looks almost like a commercial board.

Image
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Post by pinkjimiphoton »

"a 1967 Goya catalog

The original English Treble Boost. Precision made. $24.95

More info at http://www.effectsdatabase.com/model/fa ... z1vpJojthl
"

suck factor is the lack of guts. total suck. gonna have to find one of these things somewhere, so i can clone it and re-stuff this thing. it doesn't look like too many components,
but can't see the trace side.

i blew up the guts, but my eyes are way too spent to be sure of what i think i see.

Image

anybody crazy enough to help me out in this endeavor? we all could use Yet Another Treble Booster From The Sixties No One Ever Heard Of, right?

and my newb ass is way too egglike still to be able to reverse engineer something even this simple without 10,000 years and monkeys for backup.
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Post by pinkjimiphoton »

i knows i'se an idiot....

but do ya think it's a rangemaster clone?

Image

"http://acapella.harmony-central.com/sho ... turn-it-on"
"I also have a faithful clone of the Dallas Rangemaster, a vintage FAL treble booster and it doesn't even have a switch, just plug and play that noisy bastard pedal "
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Post by Steven_M »

The FAL Looks to have a couple more capacitors, and an extra resistor. But give there's no pot on the FAL, maybe the other resistor is doing duty as the pot value.

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Post by pinkjimiphoton »

yah, i don't think it's gonna be easy to find this thing..
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Post by Synthi »

I bought one ( € 1!) a few years ago, it's a rangemaster clone, but the resistors are different, base resistors are 6k8 to -, and 10k to ground, collector resistor is 4k7 , emitter resistor is 1 k. The input capacitor is 2 capacitors in series, both 10 N. There are 2 outputs, one is the cable, output capacitor is 100N, the other output is the small connector in the top of the picture, output C is 47 N. Transistor is a NTK216. I cannot read the valus of the elco's , I think it's 100 for the big one and 25 for the other ( emitter).

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Post by pinkjimiphoton »

synthi,

i love you!!!!

thanks so much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Post by pinkjimiphoton »

hi guys....this is in the "fal treble booster" i got on evilbay..

i don't think it's original, tho the pcb appears to have been factory mounted to the casing with the same crap they used on the battery holder, some double sticky sided foam kinda stuff.

that said, the battery is for a "um5 or n size" battery.

there's TWO transistors, both c1923 y g5's... i looked 'em up, they may be 2sc1923...

the board is marked with the number 4030 on the trace side...

there is a small inductor

both elecros are 10mf@16v

there's 6 resistors, 12k, 10k, 100r, 33k x 2, and 180r

i can't make out all the discs, the first one is 100p, 10n, the rest are marked with 3 or 4 ...pf? there are 4 ceramics all together.

as best as i can see (which isn't well unfortunately, the parts are labeled like this


r1 10k
r2 12k
c1 10u
c2 100p
r4 100r
c3 10p
r 5 180r
r6 33k
c4 3p
c5 10n
c6 4p
c7 10u
the "transformer" says 28-4030

here's some pics

i tried to outline the traces a little, and labeled the underside with ins and outs

Image

Image

Image

Image

Image

Image

so...what do ya think?

i'm gonna splice it back together and try and get some signal thru it...thanks guys
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Post by ~arph »

pinkjimiphoton wrote: so...what do ya think?
I think you need to hold the board further from the camera and then crop out the board after the picture has been taken. :horsey:
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Post by RnFR »

or, try the macro setting.
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Post by sinner »

Nice picts :thumbsup

Looks to me like a Blur Bender :mrgreen:

:hug:

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Post by pinkjimiphoton »

all i got is a shitty cellphone camera.

i'll try and get some better shots later somehow.
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Post by DaveKerr »

sinner wrote:Nice picts :thumbsup

Looks to me like a Blur Bender
Did you buy it from Graham Coxon?
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Post by tube-exorcist »

pinkjimiphoton wrote: hi guys....this is in the "fal treble booster" i got on evilbay..

i can't make out all the discs, the first one is 100p, 10n, the rest are marked with 3 or 4 ...pf? there are 4 ceramics all together.
The cap values appear to be correct.....
pinkjimiphoton wrote: so...what do ya think?
.... and what you´ve got is a FM-radio-transmitter for an electret-microphone.
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Post by sinner »

DaveKerr wrote:
sinner wrote:Nice picts :thumbsup

Looks to me like a Blur Bender
Did you buy it from Graham Coxon?
It's not mine, but looks like Graham Cock son's work :thumbsup

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Post by mictester »

sinner wrote:Nice picts :thumbsup

Looks to me like a Blur Bender :mrgreen:

:hug:
It has great fuzz!
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Post by sinner »

mictester wrote:
sinner wrote:Nice picts :thumbsup

Looks to me like a Blur Bender :mrgreen:

:hug:
It has great fuzz!
Perhaps for some... it has to much undefined presence - specially in upper high frequencies to me :blackeye

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Post by sinner »

@Jimi - is that dead body in your workshop?

Image

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Post by pinkjimiphoton »

it's jim morrison...he's been living here for a couple years.

so.,..a blur bender? wtf is dat?

you guys f'n with my head again?

whatever it is, it don't pass any signal!!
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pinkjimiphoton
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Post by pinkjimiphoton »

tube-exorcist wrote:
pinkjimiphoton wrote: hi guys....this is in the "fal treble booster" i got on evilbay..

i can't make out all the discs, the first one is 100p, 10n, the rest are marked with 3 or 4 ...pf? there are 4 ceramics all together.
The cap values appear to be correct.....
pinkjimiphoton wrote: so...what do ya think?
.... and what you´ve got is a FM-radio-transmitter for an electret-microphone.

yay!!! so it's an utterly worthless piece of crap in a cool vintage utterly useless plastic box.

somebody somewhere has to have one of these puppies (the fal)...i'll hold on to it a while.
"When the power of love overcomes the love of power the world will know peace."
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