Tycobrahe - Octavia  [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 Octavia which confirms my trace and theory:
http://wc6w.50webs.com/wc6wvint/fr411.html
even the original Roger Mayer Octavio schemo traced by the Tyco people can be found here.

read more about the history here:
Octavia History - Truth revealed ?
here:
Octavia Evolution courtesy of Roger Mayer
and here:
Roger Mayer Octavia Octavio
and look at the:
Tycobrahe Octavia schematic
and the
Roger Mayer Octavia schematic

This is the wrong Helios schematic where all came from:
http://vintageking.com/site/files/image ... -Var-1.jpg

The schematic on my website has been upated today.

analogguru
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Bernardduur
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Post by Bernardduur »

Had a chicago iron version in today. Identical to all the ruling schematics. Great unit.

One point; the DC jack adapter on the back was printed wrong. You would reverse the polarity if you'd follow that.
'No more....... loud music.......'

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jb351
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Post by jb351 »

For only $1999.99 it can be yours.
https://cgi.ebay.com/Amazing-1975-Tycob ... dZViewItem
Pics added below for posterity.
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Dr Tony Balls
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Post by Dr Tony Balls »

Made up a vero layout for this tonight. If anyone wants it, here you go:

Image

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p_wats
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Post by p_wats »

I've got a Chicago Iron Octavian Plus prototype (confirmed as #6/25 by Chicago Iron and signed inside) that I'm not sure what to do with...I've built a billion fuzzes already, so it doesn't get played.

You guys seem to have a handle on the schemo (as it's all over the internet), so no need to trace, I suppose:

Image

Image

http://www.facekick.ca/images/octavian_4_insideback.jpg

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Post by sinner »

You kidding? :D

Show the trace side, pretty please

Any marking on the transformer?

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p_wats
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Post by p_wats »

sinner wrote:You kidding? :D

Show the trace side, pretty please

Any marking on the transformer?
I'll take a look tonight. It's for sale, but probably will still be with me for a few days at least...

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Post by p_wats »

sinner wrote:You kidding? :D

Show the trace side, pretty please

Any marking on the transformer?
Crap. Sorry Sinner, I was going to take better pictures this weekend, but a guy came and bought it from me today as soon as I got home from work. Wasn't even time to get the back off!

I've got a funky fuzz on loan from a friend that I could take shots of though...

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Post by sinner »

No worries, I'm sure we will have this opportunity to look inside in future :wink:

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beedotman
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Post by beedotman »

I got those gut shots
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octavia2.jpg

kymar
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Post by kymar »

Please give more Hi-res gutshots

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Post by Dirk_Hendrik »

kymar wrote:Please give more Hi-res gutshots
resolution looks fine here.
Sorry. Plain out of planes.

http://www.dirk-hendrik.com

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Post by sinner »

Those are from the auction I've linked for record. It looks like ebay did some magic and downloading picts is not that easy. I had to play with webcode

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Post by Bernardduur »

I had one of those newer versions in (chicagoiron???) which was blown because the DC jack was wired different from what was written on the unit (it was wired for a normal DC adapter standard in pedals (+ on the outside, - on the inside of the barrel), the writing was the other way around)

The unit was a 1:1 copy of the older Tycobrahe schematic!
'No more....... loud music.......'

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Post by kymar »

interested on transistors and transformer marking

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Post by sinner »

few more shots

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beedotman
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Post by beedotman »

Repro PCB and wiring:
http://www.turretboard.org/?p=2206
8)
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octavia_small.png

sinner
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Post by sinner »

My man! Thanks for this

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beedotman
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Post by beedotman »

Yo! :thumbsup
I'm wondering why no one have done this earlier :)
Anyway, it's not 100% replica layout, but should be pretty close to original.
This one should fit 1590P1 enclosure and is sized for 42TM022 transformer.
In orginal octavias transformers are little bigger.
I will post later tighter layout for 125B enclosure.

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