Okko - Diablo Boost+ (goop pics!!)  [traced]

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Okko - Diablo Boost+ (goop pics!!)

Postby modman » 12 Jan 2008, 18:14

okko.png


looks kind of nice, but looks deceive, look inside -- ugly black stuff!!

http://www.digimart.net/images/700/DS00298624_1.jpg
http://www.digimart.net/images/700/DS00298624.jpg
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Postby soulsonic » 12 Jan 2008, 18:31

The circuit board needs to take a bath. A chemical bath. :wink:
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Postby briggs » 12 Jan 2008, 19:34

I love those cases. Huge LED's are great!
Image

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Postby neilnil » 13 Jan 2008, 05:08

I used to own one (without boost) and it had the thickest epoxy goop i've ever seen. The goop was hard enough to hold the PCB securely so I couldn't dare to trace it. It was quite versatile and covered a lot of grounds but lacked dynamics IMO. Pretty nice OD overall and looks really cool with that contoured face. I would guess it has ROG style fet-based circuitry.
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Postby JHS » 13 Jan 2008, 11:22

The basic circuit is a BSIAB1. The boost function seems to be split gain pots ala FD-2.

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Re: OKKO - Diablo Boost+ (goop pics!!)

Postby plexilover » 13 Jun 2008, 15:01

Where can i get the BSIAB1 circuit? What are the differences to the BSIAB2?
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Re: OKKO - Diablo Boost+ (goop pics!!)

Postby JHS » 13 Jun 2008, 17:09

A stock BSIAB2 will not produce the sound of the Diablo. The Diablo is a very heavy modded BSIAB2 with a lot of finetuned part values. The tone is generated by this mods and the Diablo sounds way different compared to the bland sounding BSIAB.

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Re: Okko - Diablo Boost+ (goop pics!!)

Postby seniorLoco » 14 Jun 2008, 13:39

its rocket science i tell you :shock: modding the Bsiab2....
"Curiosity may have killed the cat, but it saved the mice, who ate the cheese."
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby soggybag » 14 Jun 2008, 22:29

The description talks about a charge pump option. BSIAB probably sounds pretty good at 18V.
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby Ed G. » 05 Jul 2008, 06:43

soggybag wrote:The description talks about a charge pump option. BSIAB probably sounds pretty good at 18V.


It does. :wink:
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby plexilover » 24 Oct 2008, 17:53

Again, anyone who have the BSIAB1 schematic? What are the differences between BSIAB 1 and 2?
Anyone out there who modded a BSIAB?
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby Ed G. » 25 Oct 2008, 18:02

I think the term "bsiab" in this sense is used improperly. The Okko Diablo, I'm sure, uses cascading miniboosters (revealed to DIY'ers by Jack Orman) but other than that, I suspect it shares little else with the BSIAB or BSIAB2.
I urge anyone to experiment with a breadboard and fets. The minibooster is high gain, self-biasing and sounds great. When overdriven, I find it sounds much more natural than diodes clipping. There are many avenues for tone shaping.
Look up also Aron Nelson's booster 2.5 and Doug Hammond's Sweet Thing schematics for more examples.
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby Lawnchair » 13 Dec 2008, 17:02

Anyone degooped one yet? I might have to pick one up after the holidays. I'm tying to work up a body control for the BSIAB2 now.
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Re: Okko - Diablo Boost+ (goop pics!!)  [traced]

Postby soulsonic » 14 Aug 2009, 04:19

Bumping this to attach the schematic. I don't remember who traced this one or where I found it... I think I found it at Das Musikding... maybe Kusi traced it?
Anyway, I hope it is okay with the author to post this here.
:D
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby Saruman » 14 Aug 2009, 10:05

soulsonic :applause: :applause: :applause: :D
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby SPeter » 14 Aug 2009, 19:42

Thanks Man!
:applause:
:D
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby eddieod » 15 Aug 2009, 14:23

GREAT!!! :horsey:

BUT...which fet's go into this circuit (Q1....7)? J201's?

Thanks!

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Re: Okko - Diablo Boost+ (goop pics!!)

Postby soggybag » 15 Aug 2009, 16:12

Is that two mini-boosters followed by a BMP tone control? Similar to the BSIAB. The more channel looks more interesting, especially the bass control.
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby chriscustom » 16 Aug 2009, 14:03

soulsonic wrote:Bumping this to attach the schematic. I don't remember who traced this one or where I found it... I think I found it at Das Musikding... maybe Kusi traced it?
Anyway, I hope it is okay with the author to post this here.
:D



OKKO_Diablo+.pdf - LEVEL 10kk??? It is an error? Can should be 100k?
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Re: Okko - Diablo Boost+ (goop pics!!)

Postby checco1280 » 01 Sep 2009, 12:00

Hi. in the original pedal, there is a selectable charge pump inside (for a 18V supply);
according to the scheme of the power supply posted in pdf, where the charge pump should be placed? For example can I use the charge pump of geofex
http://www.geofex.com/circuits/+9_to_33.htm
before the entire circuit?
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