Bearfoot - Sparkling Yellow Overdrive 2 (SYOD 2)  [traced]

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Bearfoot - Sparkling Yellow Overdrive 2 (SYOD 2)  [traced]

Postby TheLemon » 06 Aug 2012, 04:54

Had a buddy in Cali send me some pics. Can't see the resistor values perfectly, but he gave me the cap values and basically it's a tweaked Dyna Red.
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Last edited by Seiche on 12 Feb 2013, 09:59, edited 1 time in total.
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Re: Bearfoot FX SYOD 2 (Schematic, Gutshots)

Postby TheLemon » 06 Aug 2012, 20:10

Tough crowd. I'm guessing the "M" knob is a A1M like used in the Sky Blue's "z" or resonance control, or its like a B5k used in the clipping section between the 220N to change where the distortion lies in the mids.
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Re: Bearfoot FX SYOD 2 (Schematic, Gutshots)

Postby IvIark » 06 Aug 2012, 21:10

Thanks for the scheme, here's a vero layout if anyone wants to give it a try. Based on my Dyna Red layout which is verified so should be good to go.

[Incomplete]
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Re: Bearfoot FX SYOD 2 (Schematic, Gutshots)

Postby IvIark » 06 Aug 2012, 21:23

TheLemon wrote:Tough crowd. I'm guessing the "M" knob is a A1M like used in the Sky Blue's "z" or resonance control, or its like a B5k used in the clipping section between the 220N to change where the distortion lies in the mids.


Oops, didn't realise it was incomplete, I suppose I should at least look at the front of one before doing a layout! :lol:
I'll check out the vids later to see what the M knob does
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Re: Bearfoot FX SYOD 2 (Schematic, Gutshots)

Postby Seiche » 07 Aug 2012, 18:04

aaand another one... :lol:
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Re: Bearfoot FX SYOD 2 (Schematic, Gutshots)

Postby TheLemon » 08 Aug 2012, 03:13

Heres some ideas from the actual website on the M knob -

"It was 3 knobs but it also had the lowmids control attached to the drive knob in reverse - so you got a beefier clean/low dirt sound and it tightened up for higher dirt settings. The new M control does all of this but also lets you use it in other ways to push the DRD into fuzzier territory or use it as an EQ for cleaner tones - a little mids can go a long way ...... also has the red sparkle paint job and gold lettering."
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Re: Bearfoot FX SYOD 2 (Schematic, Gutshots)

Postby Manfred » 12 Aug 2012, 23:19

I guess that the "M"(Mid) knob potentiometer replaces the 1kOhm resistor which is shown in red marked area in the schematic detail.

M_Knob.jpg
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Re: Bearfoot FX SYOD 2 (Schematic, Gutshots)

Postby TheLemon » 13 Aug 2012, 04:30

Yeah guys, sorry for the rough pics, he said his camera could not capture the details. I'm sure your right about the "M" pot replacing the resistor circled in red.
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Re: Bearfoot FX - OSYOD2 Sparklin' Yellow Overdrive v2

Postby Manfred » 30 Oct 2012, 02:08

In comperation with other BF FX schematics, the "M"-knob circuit could be realized in a uniform manner.
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Re: Bearfoot FX - OSYOD2 Sparklin' Yellow Overdrive v2

Postby Quietus » 25 Nov 2012, 09:13

hi, attached is the vero i just did based on the schematics by both our friend TheLemon and Manfred if anyone's interested. i omitted the 1K resistor that was circled in red, and i referred to Mark's DRD vero layout throughout. i've checked it against the schematic, and i'm fairly confident that it's correct. but could any of you be so kind as to check it against the schematic again just to make sure? :wink: thanks all!
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Re: Bearfoot FX - OSYOD2 Sparklin' Yellow Overdrive v2

Postby Manfred » 26 Nov 2012, 08:30

Hi Quietus,

thanks for modifying the layout.
please remain the seriell circuit containig the 1kOhms resistor and the the 200nF capacitor,
because the added feedback circuit which contains the 50kOhm Potentiometer and the other parts, are in parallel to it.
In the "Honey Bee" and in the "Modell H" the FB circuit is wired in the same manner.
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Re: Bearfoot FX - OSYOD2 Sparklin' Yellow Overdrive v2

Postby Quietus » 26 Nov 2012, 16:20

okay, Manfred. noted. so, here you go guys! :horsey:
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Re: Bearfoot FX - OSYOD2 Sparklin' Yellow Overdrive v2

Postby Manfred » 26 Nov 2012, 22:28

I further difference to the Honey Bee and the Modell H schematic is the FET output circuit.
On the 3 knob SYO schematic is a source follower circuit is shown, the gain is about one.
On the HB and MH the output stage schematic is a source based circuit, the gain is about 2.5 .
It seems to be that a higher gain along with the feed back circuitry is needed.
Is there anyone who knows futher details?
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Re: Bearfoot FX - OSYOD2 Sparklin' Yellow Overdrive v2

Postby muhd85 » 08 Dec 2012, 06:12

layout above is working for me. thanks everyone :)

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Bearfoot - Sparkling Yellow Overdrive 2 (SYOD 2)

Postby Seiche » 12 Feb 2013, 08:21

modified header to facilitate searching this topic (the pedal's name is "Sparkling Yellow Overdrive 2", not "Sparklin' OSYODv2" or something). :thumbsup
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Re: Bearfoot - Sparkling Yellow Overdrive 2 (SYOD 2)

Postby world vs venkman » 25 Dec 2013, 14:56

Interesting--thanks!

If I gave the M control a shot in my Dyna Red, would it be advisable to change the values of the caps and resistors associated with it, or would it be fine as-is? It wouldn't be hard to lift one leg of the 1k resistor and add this in (just some creative wiring to fit it).

Thanks!
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Re: Bearfoot - Sparkling Yellow Overdrive 2 (SYOD 2)

Postby lukatosh » 25 Dec 2013, 16:44

yes! :D
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Re: Bearfoot - Sparkling Yellow Overdrive 2 (SYOD 2)

Postby mlp-mx6 » 06 Apr 2016, 03:18

Has anyone nailed down the differences between the SYOD 1 and 2? (or the switched components in the 3?)

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Re: Bearfoot - Sparkling Yellow Overdrive 2 (SYOD 2)

Postby HamishR » 24 Jul 2017, 10:02

Just built this using Muhammad's layout - thanks Muhammad! It's sounding great, but I did reverse M1 and M2 so that turning the pot up increases mids rather than decreasing them.

The other issue I have is that I'm getting oscillation when M is on full. When M is on full I'm reading around 3ohms between C14 and ground. If I turn M down just a hair so I'm reading just over 4ohms between C14 and ground the oscillation stops. What could be causing this?
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