'SPITFIRE' Metal 'n' Blues Pedal...

[mr_deadmaxxx]

yep.. a dual 47k pot.. though i'm not really sure if it's good when separated.

also i'm thinking of quad instead of dual opamps..
it would depend on which layout is more or less flexible. 

does this schematic need to be "scaled" too? 

i'm not sure though where to connect this tonestack to the current V3 schematic.
i think right after the last JFET would do it but i also want that modern/classic cap mod..

:i found this avatar funny though..

[Perrow]

sorry to hear your probs man....check the usual stuff, joints , cap orientation etc.....did you socket the fets?..did you toast one?...

i had a similar prob, but it turned out to be the worlds tiiniest bit of solder betweeen the tone caps...get the old magnifier out...

meanwhile!...da da da da da da daaaaaaa..

SPITFIRE V5  

I'm beginning to suspect that you haven't verified this layout.

Looking at Q1, "D" is connected to three different caps, i.e. no DC on that one and can also be shorted to ground with the Fuzz switch, "S" is only connected to ground, via one resistor and a cap. I was trying to mentally follow the signal on my 1590A layout and got stumped, so I had to check your layout and couldn't find anything that differed, went back to page one and to V3 and they're Q1s are connected quite differently, so how should V5 look?

[deadastronaut]

hi pelle: ive built the page 1 version, and the v3 version all ok......check this schemo as a reference....
http://www.aronnelson.com/gallery/main.php/v/chickpea/SPITFIREV3.jpg.html    (schemo)
http://www.aronnelson.com/gallery/main.php/v/chickpea/SPITFIREV3.pdf.html

and yep that 'fuzz' cap does go to ground (socket to taste)....haven't built v5 as yet, but looks ok.....

[Perrow]

but looks ok.....

But Q1 isn't powered!

[deadastronaut]

correcto!..Q1's drain is connected to Q2's  source!......oh hold on i'll check again...
http://www.aronnelson.com/gallery/main.php/v/chickpea/SPITFIREV3.jpg.html


ahhh isee what you mean..on v5  that fuzz cap .....hmmm....yeah it should be connected to the source of Q2....then the switch under it...

give me a bit i'll sort it ok......well spotted.

[deadastronaut]

here ya go ...sorted...good catch man!..

http://dl.dropbox.com/u/7464107/SPITFIREV5THRASHER.pdf

http://dl.dropbox.com/u/7464107/SPITFIREV5PCB.pdf

[Perrow]

And the still unverified 1590A Layout.

[deadastronaut]

full of curly mojo.....

[Perrow]

here ya go ...sorted...good catch man!..

Sadly I didn't spot it before etching and stuffing the board, I'm still a few capacitors short of completing it so I haven't tried it yet.

full of curly mojo.....

Always 

[bonaventura]

@perow hey...thats a spitfire. bet it adds to the mojo factor.

never noticed that before, nice touch 

just got my J201s and on to the breadboard!

after the baby sleeps...

cant work at all with a 2 yr old ard.

arrrgh...the wait!

[Perrow]

Try it with a two year old AND a five year old

[bonaventura]

wow this thing rules!

i'll have to order more caps to do mods and hear what you guys been talking abt.

i do need an advise.

im having difficult time finding log pot (for the gain) locally.i learned fm geofex how to hack a linear pot to mimic log taper.however the largest pot i can find is 1Mohm and RG advised that the load the hack gives is only 20% of the pot value (200Kohm only).

im not sure but can the first stage drive this kind of load?

will i lose some highs if i employ this hack with my 1Mohm pot?

is there a way to get around this with what i have?

much appreciate your advise.

[deadastronaut]

hi bon:

do you mean you have a 1M linear pot?...

i wouldn't bother hacking a lin to be a log..

the only difference i think you'll get is the actual travel  'sweep' action  as you turn it...but you will still have full gain on max!..

[bonaventura]

hi bon:

do you mean you have a 1M linear pot?...

i wouldn't bother hacking a lin to be a log..

the only difference i think you'll get is the actual travel  'sweep' action  as you turn it...but you will still have full gain on max!..

high gain is good,  but every little now and then, we all need some blues 

which btw, i think the low gain stuff this pedal offers is also great!

[deadastronaut]

yep sure is!...

[ANDYEFFECT]

here ya go ...sorted...good catch man!..

http://dl.dropbox.com/u/7464107/SPITFIREV5THRASHER.pdf

http://dl.dropbox.com/u/7464107/SPITFIREV5PCB.pdf

where C2 in this layout?

[Maik]

There never was a C2 in this layout! 
C2 was from outer space... 

[Crontox102098]

And the still unverified 1590A Layout.

The layout looks great, which is the software?

[Perrow]

The layout looks great, which is the software?

Diylc V3.

[Crontox102098]

The layout looks great, which is the software?

Diylc V3.

But how do the curves? look great ..