Jen (Gretsch Playboy) - Harmon Booster  [schematic]

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Jen (Gretsch Playboy) - Harmon Booster

Postby nightraven » 22 Feb 2012, 14:46

an interesting pedal made in Italy in the mid 70s (my guess) and there seems to be little to no documentation of it anywhere on the 'net. it's basically an overdrive pedal that borders on fuzztone with the controls dimed and having a dirty amp to start with. very underrated IMHO - i think it's loads better than Tubescreamers and the various copies. maybe a worthwhile candidate for a trace?
i cracked it open today and as you can see broke one of the faders a bit while prying off the caps.

Image
Image

i can take more pictures if anybody is interested...

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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby digi2t » 22 Feb 2012, 15:18

Hi nightraven,

If you can draw up the schematic, I would be more than happy to draw up a vero layout. I'll probably not build it, but I find it nice to share a vero as an alternative to the enthusiasts. I love these rare-ass pedals :D. Besides, I find TS's highly over rated [smilie=sleep.gif], so any alternatives are always interesting.

Cheers,
Dino
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby digi2t » 22 Feb 2012, 15:34

Hi nightraven,

If you can draw up the schematic, I would be more than happy to draw up a vero layout. I'll probably not build it, but I find it nice to share a vero as an alternative to the enthusiasts. I love these rare-ass pedals :D. Besides, I find TS's highly over rated [smilie=sleep.gif], so any alternatives are always interesting. Also, one could always bread board, and tweak the circuit to his/her liking.

Cheers,
Dino
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby nightraven » 22 Feb 2012, 15:53

hey Dino, i'd love to help but the only thing i know how to do is take photos :lol: i'm a total beginner at electronics so it'd be up to somebody else to draw up a schem!
also on another note, the guy i got this pedal from ages ago has a Project V fuzz ;) small world
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby jrod » 22 Feb 2012, 16:59

I've seen a schematic for this somewhere. :hmmm:

I think it was on the DAM forum but it looks like its been taken down.
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby digi2t » 22 Feb 2012, 19:12

hey Dino, i'd love to help but the only thing i know how to do is take photos i'm a total beginner at electronics so it'd be up to somebody else to draw up a schem!
also on another note, the guy i got this pedal from ages ago has a Project V fuzz small world


Alright man, no prob, I'll see what I can do with the pics you've posted. Just a bit tough with those sliders in the way.

Sidebar...If you have a chance though, could you shoot some more pics of the Project V? Specifically the area around the Drive and Edge switch connections. I'd like to verify the connections and resistors/capacitors. From the other pics, there seems to be some resistors that are hidden underneath caps or resistors. Please thank your friend from me in advance, if he's cool with it. The ultimate coolness would be a sound, or video clip of the Project V in action, running through the different settings. Then I could really compare my clone to the original. Like I said, that would be WAY cool!

Thanks for all your work to date.
Dino
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby nightraven » 22 Feb 2012, 23:18

digi2t wrote:Alright man, no prob, I'll see what I can do with the pics you've posted. Just a bit tough with those sliders in the way.

Sidebar...If you have a chance though, could you shoot some more pics of the Project V? Specifically the area around the Drive and Edge switch connections. I'd like to verify the connections and resistors/capacitors. From the other pics, there seems to be some resistors that are hidden underneath caps or resistors. Please thank your friend from me in advance, if he's cool with it. The ultimate coolness would be a sound, or video clip of the Project V in action, running through the different settings. Then I could really compare my clone to the original. Like I said, that would be WAY cool!

Thanks for all your work to date.
Dino

sending PM........... :thumbsup
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby teleK » 22 Feb 2012, 23:59

Discofreq is gonna love this...
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby jrod » 23 Feb 2012, 02:30

Yeah, the schematic on the DAM forum is gone.

I do remember it having emitter followers at the input and output with a gain control at the input.

The rest of it kind of reminded me of the Univox Super Fuzz (minus the clipping diodes), but was not exactly like it, it just kind of looked similar to me.

Part of the schematic looked exactly like the attached photo. Also, the tone control is BMP style.
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby kaycee » 24 Feb 2012, 00:17

Is it this one on the left?

http://www.aronnelson.com/gallery/main. ... N.jpg.html

I'm sure that I have a vero from somewhere of it...
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby kaycee » 24 Feb 2012, 00:22

Or maybe I'm confusing it with this one:

viewtopic.php?f=19&t=2303&p=26335
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby nightraven » 24 Feb 2012, 09:18

kaycee wrote:Is it this one on the left?

http://www.aronnelson.com/gallery/main. ... N.jpg.html

I'm sure that I have a vero from somewhere of it...

this is the one :thumbsup
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby Bernardduur » 24 Feb 2012, 10:44

I saw such a transistor method in the 'Tube Bender'

Link

Could it be similar / close????
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby mmolteratx » 06 Mar 2012, 02:08

Mine should be here in the next couple days. I'll reverse it then.
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby sonicvi » 06 Mar 2012, 21:25

Here's the schematic.

[img]http://i100.photobucket.com/albums/m23/sonicvi/Jen_Gretsch_Harmon_Booster_Schematic.jpg[/img
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Re: Jen (Gretsch Playboy) - Harmon Booster  [schematic]

Postby sonicvi » 06 Mar 2012, 21:27

I'll try that again.

Image

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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby sinner » 09 Mar 2012, 03:27

Thanks a lot SonicVI. Here's what I did based on your schematic

Hopefully it's correct

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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby sonicvi » 09 Mar 2012, 13:50

I dunno about your layout, but the schematic is definitely correct. I've built many clones of it from this schematic.

http://stompboxes.co.uk/forum/viewtopic ... ter#p76119
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby sinner » 09 Mar 2012, 20:19

I like your builds, I've seen many of them including those. What transistor gains you could recommend?

As per my layout. It could be fucked up, I was doing it between 2am and 4am, I had huge headache and I couldn't sleep. I'll give it overlook later
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Re: Jen (Gretsch Playboy) - Harmon Booster

Postby sinner » 09 Mar 2012, 21:22

Whooohooo, this sounds cool :shock: Now I'm sure I'll overlook it again :mrgreen:


Link
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