Roger Mayer - Fuzz Face AC128

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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modman
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Post by modman »

89250626_10220310649329357_5100643675432550400_o.jpg
89348891_10220310650649390_7722992058868170752_o.jpg
85048141_10220310649689366_3679755635060113408_o.jpg
89264795_10220310651689416_960608519952793600_o.jpg
rogermayer_fuzzface_fb01.jpg
rogermayer_fuzzface_fb02.jpg
axisfuzzblueschematic.png
axisfuzzblueschematic.png (11.72 KiB) Viewed 1917 times
I borrowed these from facebook:
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Cigano23
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Post by Cigano23 »

This is what he calls the "Classic Fuzz".

The current version uses a 50K (47K?) trimpot for the first transistor collector bias and a 10K output resistor.

And from the top of my head, the usual 8k2 resistor is 10K on the more recent versions of Classic Fuzz.
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Manfred
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Post by Manfred »

Is there also a photo of the soldering side?
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turbofeedus
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Post by turbofeedus »

Not really important, but in case anyone was wondering, BEL is Bharat Electronics Limited.
I had some AC176 made (or at least labelled) by them and it took me a while to figure it out.
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modman
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Post by modman »

Manfred wrote:Is there also a photo of the soldering side?
No, I'm sorry, was already glad with the gutshots....

Here is another one from that same Vintage Guitar FX facebook group:
With two 1k8 resistors? :scratch: :hmmm:
Correction: of course they are 18k!
I would be very interested to hear this unit.
Roger Mayer - Fuzz Face AC128 guts red
Roger Mayer - Fuzz Face AC128 guts red
Roger Mayer - Fuzz Face AC128 guts red
Roger Mayer - Fuzz Face AC128 guts red
Roger Mayer - Fuzz Face AC128 guts red
Roger Mayer - Fuzz Face AC128 guts red
Roger Mayer - Fuzz Face AC128 guts red
Roger Mayer - Fuzz Face AC128 guts red
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Nocentelli
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Post by Nocentelli »

modman wrote: With two 1k8 resistors? :scratch: :hmmm:
I would be very interested to hear this unit.
The picture makes them look more like 18k, but still fairly odd either way
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...
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Manfred
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Post by Manfred »

That is my guess for the PCB.
RogerMayerFuzzFacePCBComponents.JPG
RogerMayerFuzzFacePCBComponents.JPG (24.39 KiB) Viewed 1716 times
RogerMayerFuzzFacePCBSolderSide.JPG
RogerMayerFuzzFacePCBSolderSide.JPG (17.42 KiB) Viewed 1716 times
RogerMayerFuzzFacePCBComponents.pdf
(5.42 KiB) Downloaded 125 times
RogerMayerFuzzFacePCBSolderSide.pdf
(2.29 KiB) Downloaded 145 times
SprintLayout 6.0 - file:
RogerMayerFuzzFacePCB_AC128.zip
(5.62 KiB) Downloaded 127 times
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pietro_moog
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Post by pietro_moog »

Do we know the voltages?
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