Liquid Sunshine Layout----have a look? MARTY!!!!

[markm]

Here's my NEW layout of this circuit.
Please have a look and let me know if you fellas think it's correct.
Thanks for your time....
   MarkM

[MartyMart]

My eye's are going "wonky" !
Erm , source connection on Q2 ? there's an empty hole ... what's "drive B" ?

All else seems fine

MM.

[markm]

Well,
If I'm reading this correctly, there are two drive controls, A & B.
Schem says that a 100k pot goes to the source of Q2.....Man I hope I'm right!!

[MartyMart]

You are 100% right ! and I apologize ,,, totally missed it, thought it was a 10k with .22 to ground and
not a pot .... 

..... still sounds great though
MM.

[markm]

You are 100% right ! and I apologize ,,, totally missed it, thought it was a 10k with .22 to ground and
not a pot .... 

..... still sounds great though
MM.

Oh man, I was worried there.....
My first draw had it as a regular resistor and I sent that one to the recycle bin before anyone saw that error!
Hey, thanks for your help and guidance.
This is what makes our little space on the net so nice and "homey"!!
Here's the PNP if anyone feels like giving it a shot. 




I will try to build it tomorrow evening and verify that it works.

Thanks again Marty, I owe you!

[MartyMart]

I'm going back to the way I had it !
The pot just through my bias and gain WAY off !!
I had either huge motorboating or just a quiet little boost ,,,
It's staight 10k and cap for me .... again !
All MPF102's sounded best and "brightest" too BTW

MM.

[gulliver]

This looks like a real promising project, keep us in the loop.

[markm]

I'm going back to the way I had it !
The pot just through my bias and gain WAY off !!
I had either huge motorboating or just a quiet little boost ,,,
It's staight 10k and cap for me .... again !
All MPF102's sounded best and "brightest" too BTW

MM.

Weird......the original Subdecay pedal had 3 pots.....
I'll see what happens when I put it together tomorrow night.
I wonder if it would be possible to run a lesser value pot in parallel with a lesser value resistor.
Maybe  a 6.8k resistor with a 5k pot?

[gulliver]

I'm sure you guys have seen this, but clips of the real one here:

http://www.pedalgeek.com/cgi-bin/new_shop.cgi?config=&uid=DCDoNAAA1153228693&command=link--sdls

[markm]

I'm sure you guys have seen this, but clips of the real one here:

http://www.pedalgeek.com/cgi-bin/new_shop.cgi?config=&uid=DCDoNAAA1153228693&command=link--sdls

Yes!
I have seen + heard it.
It's quite a nice sounding stomper huh?
I'm still puzzled as to why Marty lost bias using the second drive control. Maybe matched FETs are a neccessity here?

[MartyMart]

I'm still puzzled as to why Marty lost bias using the second drive control. Maybe matched FETs are a neccessity here?

Possibly, and I also had to use a 220k gain pot !! ( out of 100k's )   
Didn't bother to parallel it with another 220k r to get around 110k but ................

Got it tuned so there's no oscillation, with Q1/Q2 MPF102 and Q3 2N5457 and straight 10k/220n off Q2
I probably have a bit more gain now , like the tone very much

MM.

[gulliver]

Any progress here boyz?

If you guys can come up with something from this, and can share it with the rest of us ... I think it would really add to the forum.

1st, this is a boutique pedal
2nd, it's creator handed over the schematic as fair game
3rd, the clips sound pretty good and it is a nice change from the Tubescreamer type pedals, which are growing a bit tiresome.

Thanks.

[markm]

I have plans to try and fire this thing up this weekend.
For some reason, there is a bias issue that I can't quite figure out yet.
I'm gonna try some other FETs and see what happens.

[MartyMart]

I'm very happy with it as a "two knob" circuit .
The 10k/220n off Q2 is working fine for me "bias" wise and I have a good range
of tones very similar to the samples posted above .
I have very clean to mid-gain and a good solid and bright "amp" like sound.

MM.

[markm]

Marty,
What'd you use for FETs??

[MartyMart]

Marty,
What'd you use for FETs??

Same as above post

MM

[markm]

Marty,
What'd you use for FETs??

Same as above post

MM

Oh yeah huh? 
..........sorry!
Welp, so far It's working but, not alot of dirt to it.
I'm going to try and compare the sound of mine to the clips on the net. I must point out to those interested in building this that this is NOT the infamous Liquid Sunshine but rather, an "earlier version" according to Brian's post. (unless of course, I am mistaken)
So, unless he chimes in here, at this point, don't get yer hopes up just yet.
Like I said, It seems this layout works but, I'm not overly impressed by it at all.
Dragonfly's Sparkle-Boost or the Peppermill seems a bit better.
I wonder what's different about the current Liquid Sunshine than this one 

[MartyMart]

Hint :
Try a slightly larger "gain" pot , 220k ( odd value, but I have some 24mm ones ) or a 500k with 470k r across pins 3&1
Means a slight "re-bias" to avoid howling , but sounds good to me .
On mine , I changed the 10k into Q3 to a 47k.

MM.

[cbriere]

Any new results?
i'm keeping an eye on this topic,
i will probably bild this one,

I have prototyped the schematics posted
with other FET (unknown PN, i bought as replacement for an Phase90 project)
tried it, sounds cool, maybe lack of gain (to my taste).
I wonder if J201 would work?
cb

[markm]

Any new results?
i'm keeping an eye on this topic,
i will probably bild this one,

I have prototyped the schematics posted
with other FET (unknown PN, i bought as replacement for an Phase90 project)
tried it, sounds cool, maybe lack of gain (to my taste).
I wonder if J201 would work?
cb

Just my opinion of course but,
To me until a different schem appears this project is dead.
The layout you see here works and functions for the most part but, it is NOT the "real" Liquid Sunshine that is known and loved!
Like Brian M had stated, the schem he posted was for an earlier version and my uninformed guess would be, that said schem is lacking alot of refinements that the actual "real" Liquid Sunshine contains.
Therefore, the refinements and additions that the actual production unit contains are still a mystery to us and remain undisclosed which is really anyone's guess at this point as to what those additions actually are.
My layout does function but, it's NOT the Liquid Sunshine that all the soundclips on the net represent and I think there quite possibly are many changes to be found in the current production circuit.
'Til any more info is available on the current circuit, I'm not planning on messing with it anylonger.
Build the Folk Fuzz 3.5 instead, FANTASTIC sounding circuit.....you won't regret it