Tycobrahe - Parapedal  [schematic]

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

And here is the Tycobrahe Parapedal:

http://wc6w.50webs.com/wc6wvint/fr412.html

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modman
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Post by modman »

geofex.com posted a project on this last summer:
8/25/06 Updated - the Tychobrahe Parapedal schematic and layout. The board bolts into a Crybaby shell and clones the Parapedal. Fixed a capacitor bug and added a new negative ground version.
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Post by analogguru »

....last summer
8/25/06 Updated .....
:?: I think this should be read as last year´s summer... :wink:

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Post by soulsonic »

I heard a clip of the Chicago Iron remake of the Parapedal. It sounded interesting, but more of a special effect than a normal wah.

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modman
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Post by modman »

analogguru wrote:
....last summer
8/25/06 Updated .....
:?: I think this should be read as last year´s summer... :wink:

analogguru
Read what you like, but I think you mean "should be written" :wink:
I Still Remember What You Did Last Year's Summer :?

Zat iz doch gar no Ingrish!

The effect will work just fine any summer, there is no GE in there!
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Post by Vinnie »

What type of effect is in fact?

Thanks in advance.

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Post by dajm »

What type of effect is in fact?
it's a wah pedal, Tony Iommi uses one

http://filters.muziq.be/model/tycobrahe/parapedal

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Kaos
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Post by Kaos »

any soundsamples around?
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Post by Vinnie »

Thanks dajm!

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Post by dajm »

any soundsamples around?
there are some sound clips here of a reissue made by Chicago Iron (they've released reissues of the Tycobrahe pedals - Parapedal, Octavia + Pedal Flanger)

They'll give you some idea of the sounds it can make....

http://www.chicagoiron.com/parachute.html

Thanks dajm!
glad to help !

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Post by alteredsounds »

hey everyone, just joined, recognise a few names. Here's a few pretty close up pics and a few part names of my original for anyone wanting to build this. I'm now in a better position to clarify most part values if anyone is interested.


http://www.alteredsounds.com/modules.ph ... age&pid=22

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Post by Vinnie »

Which pot of the comercial ones to use that fits a "dunlop" shell?

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Post by modman »

alteredsounds wrote:Along the same line, I remembered I still have some gut shots of my Tycobrahe Parapedal online if anyone's interested. I intend at some point to clone this, if i ever get time!

http://www.alteredsounds.com/tyco/t1.jpg
http://www.alteredsounds.com/tyco/t2.jpg
http://www.alteredsounds.com/tyco/t3.jpg
http://www.alteredsounds.com/tyco/t4.jpg
http://www.alteredsounds.com/tyco/t5.jpg
http://www.alteredsounds.com/tyco/t6.jpg
http://www.alteredsounds.com/tyco/t7.jpg
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Post by McHaven »

I'm looking at putting together one of these, but I'm curious whether or not the GGG modifiable Wah PCB could work. I'm a total newbie at this, and really don't want to have to make my own PCB. Anyone know?

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Post by soulsonic »

McHaven wrote:I'm looking at putting together one of these, but I'm curious whether or not the GGG modifiable Wah PCB could work. I'm a total newbie at this, and really don't want to have to make my own PCB. Anyone know?
The Parapedal is a totally different kind of circuit than the usual wah. You would need a board designed just for it.
R.G. Keen has a Parapedal project up at Geofex.com
Here is a link to one of the layouts: http://www.geofex.com/FX_images/parapedal_layout.gif
Here is the updated schematic:

Image
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Post by McHaven »

soulsonic wrote:
McHaven wrote:I'm looking at putting together one of these, but I'm curious whether or not the GGG modifiable Wah PCB could work. I'm a total newbie at this, and really don't want to have to make my own PCB. Anyone know?
The Parapedal is a totally different kind of circuit than the usual wah. You would need a board designed just for it.
R.G. Keen has a Parapedal project up at Geofex.com
Here is a link to one of the layouts: http://www.geofex.com/FX_images/parapedal_layout.gif
Here is the updated schematic: http://www.geofex.com/FX_images/parapedal.gif
Right, I have that schem/layout, but I was just curious of the best method to use to get my PCB. Looks like I'll have to make one myself? Or can I order one online from the layout?

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Post by Solidhex »

Yo

I built a clone of the Parapedal. I was lucky enough to find a 100k dual pot with a long shaft. I was able to a/b it with the Chicago iron version and I'd say they sounded very close. Its almost too over the top for regular use. There's this huge low end "thunk" when it gets into the bass range. If you like having a some fun pedals around for recording I recommend it.
If you plan on making a clone don't buy one of the replacement pots from Chicago Iron. They're really nice guys but they'll just send you a regular panel mount alpha dual pot with no pinion, gear, or mounting hardware and they'll charge you $15...
Iommi used the Parapedal from around Sabbath Bloody Sabbath on I've heard. For his more iconic wah tones he used a Colorsound.

--Brad

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Post by joegore »

McHaven wrote:
soulsonic wrote:
McHaven wrote:I'm looking at putting together one of these, but I'm curious whether or not the GGG modifiable Wah PCB could work. I'm a total newbie at this, and really don't want to have to make my own PCB. Anyone know?
The Parapedal is a totally different kind of circuit than the usual wah. You would need a board designed just for it.
R.G. Keen has a Parapedal project up at Geofex.com
Here is a link to one of the layouts: http://www.geofex.com/FX_images/parapedal_layout.gif
Here is the updated schematic: http://www.geofex.com/FX_images/parapedal.gif
No doubt true — not that I could fully understand the schematic in any case. But what I HEAR in the audio demos is simply a sweepable bandpass filter with a much lower cutoff point than a conventional wah — somewhere around 100 Hz, right?

So would it not be possible to get an identical effect, if not an identical circuit, using a standard wah layout and tweaking the filter ranges? That's assuming you WANTED this sound, which isn't necessarily a given.

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Post by Solidhex »

Yo

I haven't heard any regular wah circuit come close to the Parapedal circuit. I could be wrong in describing it but it seems to ( to my ears ) have a narrow q that is also very extreme. The resonance is crazy and it seems to do the huge synthy woosh sound at the heel position. I don't think sonically it can be approximated with the garden variety inductor equipped wah circuit.
I'd recommend building it if you like to have a lot of unique circuits around. The problem generally is finding a dual pot. I need to bust out the breadboard so I could test out a standard 100k pot controlling a dual vactrol that is in turn controlling dual voltage dividers instead of the usual dual pot setup.

--Brad

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Post by Visualdistortion »

soulsonic wrote:
McHaven wrote:I'm looking at putting together one of these, but I'm curious whether or not the GGG modifiable Wah PCB could work. I'm a total newbie at this, and really don't want to have to make my own PCB. Anyone know?
The Parapedal is a totally different kind of circuit than the usual wah. You would need a board designed just for it.
R.G. Keen has a Parapedal project up at Geofex.com
Here is a link to one of the layouts: http://www.geofex.com/FX_images/parapedal_layout.gif
Here is the updated schematic: http://www.geofex.com/FX_images/parapedal.gif
Anyone save them? the links seems to be dead!
I wanna make it
I wanna make it wit chu
(again and again and again)

French... sorry ;)

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