Maestro FZ-1B circuit photos

Started by g3rmanium, September 13, 2007, 04:10:19 AM

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g3rmanium

Call me Johann.

g3rmanium

Btw: I drew a diagram and I think that the basic circuit from the Maestro diagram is right, but the values obviously aren't.
Call me Johann.

Sir H C

Cool, from what I have seen, this is the rarer version of the pedal.  How do you like the sound, mine is not really that good with single coil guitars, maybe it needs humbuckers to really kick.

g3rmanium

Quote from: Sir H C on September 13, 2007, 10:45:11 AM
Cool, from what I have seen, this is the rarer version of the pedal.  How do you like the sound, mine is not really that good with single coil guitars, maybe it needs humbuckers to really kick.

It's not as nasty as the FZ-1 or the FZ-1A. Chords still sound good (but different).
Call me Johann.

Mark Hammer

The more critical aspect is the identity of that little diode in the corner.  Is it Si, Ge or "other"?

g3rmanium

Quote from: Mark Hammer on September 14, 2007, 10:00:18 AM
The more critical aspect is the identity of that little diode in the corner.  Is it Si, Ge or "other"?

I guess Si, but from what I recall it just says "1N."
Call me Johann.

Mark Hammer

If you have a diode-measurement feature on your meter, you can test whether the voltage drop is in the Si (500-600mv) range or the Ge (190-260mv) range.

g3rmanium

Quote from: Mark Hammer on September 14, 2007, 10:59:53 AM
If you have a diode-measurement feature on your meter, you can test whether the voltage drop is in the Si (500-600mv) range or the Ge (190-260mv) range.

Ok, will do.
Call me Johann.

g3rmanium

Quote from: g3rmanium on September 15, 2007, 06:59:49 AM
Ok, will do.

I know I'm a little late. ;D

I tried measuring the diode today but couldn't. The meter jumped around too much. Is there anyone in Germany that could do a better job at this?
Call me Johann.

gutsofgold

thank you for the pictures, will definitely be putting them to 'good' use soon.

does anyone have picture of the back fuzz face boards? I have my own layout drawn based on pictures from the top and following the schem but it's not quite accurate.

Dragonfly

Quote from: gutsofgold on May 07, 2008, 03:23:05 PM
does anyone have picture of the back fuzz face boards? I have my own layout drawn based on pictures from the top and following the schem but it's not quite accurate.

You would be better off keeping the top "looking like" a FF and doing your own "bottom art". Dunlop is pretty protective of the Fuzz Face copyrights with regards to the artwork.

My .$02

gutsofgold

got cha  ;) I just can't get my wires to the board all clumped together like theirs is.

Skreddy

Quote from: gutsofgold on May 07, 2008, 04:18:02 PM
got cha  ;) I just can't get my wires to the board all clumped together like theirs is.

'Cause you're probably not screwing up the pinout of your transistors like they did.  :icon_wink:

SonicVI

The diode looks like the diodes in a photo of a Brassmaster I have. I've seen a photo of another Brassmaster with diodes that defininiely at least looked like Ge diodes.  What's my point? Nothing, just that it could very well be Ge, or not. :)

brett

Given that the diode seems to be DC-blocked clipper at the output, it woudn't affect bias or anything.  So maybe a Ge for a classic sound, or an Si for more rasp?
Brett Robinson
Let a hundred flowers bloom, let a hundred schools of thought contend. (Mao Zedong)

Dragonfly

Values of the pots, caps, and the transistor #'s ?

Does the orange wire go to lug 3 of a gain pot ?

Dragonfly

This is what it's looking like so far....still some "mystery part values" that need cleared up...


Dragonfly

UPDATED SCHEMATIC

I assume that the diode is germanium, but not 100% sure



Dragonfly