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

[deadastronaut]

^ yep...

if you stick a 4.7k  off lug 1 before the ground you'll get a nice overdrive at minimum gain...

and try a 100k-470k gain pot...


i just dug this out on breadboard and tried it out...

[mthibeau]

Thanks for the suggestions, the 25k for tone was perfect, and I swapped in an A500k for the gain.

You were right, pretty much all squeal was gone once I boxed it.

Thanks again for such a great high gain pedal, loving it!

- MikeT

[deadastronaut]

cool, glad you got it sorted.

i should rearrange the layout file for that...

[mthibeau]

I played with it a while last night, still loving the sound.

I do have extra noise that I can hear over playing (like a buzz). I get a bit of hissy buzz whenever I turn up the guitar volume (when it's down, it's dead quiet) - I also noticed that when I have the guitar cable unplugged and the Spitfire on, it's really noisy (even if I ground the sheath on the plug).

It's a bit noisier than my Dr Boogie or Pinnacle builds (which I hand picked the J201's that trimmed/sounded best). Could bad/questionable J201's cause extra noise/buzz

Any tips, I'll go over the board tonight to see if I have any shorts, but my solder job looked pretty good (and it is working, just some buzz/noise).

- MikeT

[deadastronaut]

hmmm sounds a little weird.

try using a sheilded output too...

[soundclone]

I only have 3 of J201 and 2 of 2N5457 ,where should put it in order to get a high gain?

[deadastronaut]

try the 5457 just before the tone Q5 and Q3..

i would socket them though, and try it ok.

[soundclone]

tanks.  ..i'll try it.

[J0K3RX]

Hey Rob, how about version 6? This is totally "unofficial" of course...

Large version --> https://dl.dropboxusercontent.com/u/11178619/SPITFIRE/Large%20SPITFIRE%20V6.jpg

[deadastronaut]

Hi man, that looks interesting, especially the tone stack...have you tried/breaded it yet?

[J0K3RX]

Hi man, that looks interesting, especially the tone stack...have you tried/breaded it yet?

No, not really.. It's a dud, nevermind.

[Ozsi]

A little bit of a bump, but I've only just hopped on the Spitfire bandwagon  Breadboarded this last weekend, tried some different values through the week and built it up tonight.  As everyone has said, it sounds awesome!  Thanks Deadastronaut for the design!

My contribution back, here's a vero layout I drew up based on Version 3.  Verified too, as this is what I built tonight and it works fine.



All components are labelled as per the schematic here: http://dl.dropboxusercontent.com/u/7464107/SPITFIREV3.jpg  

The only variation is the classic/modern caps C8 and C10.  I've added an extra cap to that section and moved them all offboard on to the switch (SW2 coming off the board attaches opposite the Tone 3 wire on the switch).  This gives three different options.  The values I settled on are marked on the layout.  Just a reminder, the three options are the middle cap by itself when the switch is in the centre/off position, and in each of the switched ON positions, you get the middle cap added to the value of one of the outer caps.  

So in the layout above, you'd effectively have 2.2nf, 6.9nf and 12.2nf.  I found that gave a good variety of sounds.   And if you have the capacitors arranged flat against the side of the switch with the legs poking up over and through the lugs, then it doesn't any extra height, it's actually quite compact.

For pots, I settled on Drive - 250KA, Volume - 10KA and Tone - 50KB.

But as DA has encouraged, experiment and choose what you prefer!

And now I will get back to playing with this thing  

Edit: if it's of use, you can download the DIYLC file for the above layout here: https://dl.dropboxusercontent.com/u/3035771/spitfire%20vero4.diy 

[deadastronaut]

cool, nice one ozsi..

[SmoothAction]

OK! Loving my spitfire. I just built the vero version Ozsi posted above and it straight rips. So consider that layout super verified. Be careful when installing the caps, I had to bend legs for most of them but its legit as all hell with care taken.

Yea, this circuit curb stomps my bsiab2. I'll play around with the drive pot as there is too much gain, it gets a smidge muddy at the far end but I'm extremely happy and thankful to deadastronaut and ozsi. Bless you dudes.

Not sure if it will completely replace my plexidrive + naga viper combo pedal (f'n gonna hard to beat that) but once I get the spitfire boxed and shielded nicely (noisy with long leads) its gonna give my current setup a run for its money.

Peace and metal lovin' all up in this b+tch. Thank you DA and Ozsi for circuit and layout respectively.

[SmoothAction]

Proof. And yes, I'm a messy SOB. I'll be boxing this evening. Match FETs and shield leads!

[SmoothAction]

Progress..

[Ozsi]

Awesome, thanks for the update, it was my first layout of a non-trivial design, so it's great to hear and see that it's working for someone other than me.  Neat idea with the enclosure too, just red and black Sharpies right?

I'll try to get some pictures up of mine too, keep the spitfire love coming

[escroito]

Hello
I'm having some problems connecting key middleweight version 1590a someone could help please.
Sorry for the bad English.

[deadastronaut]

Sorry, i dont understand ....

[escroito]

my mistake, is not key, is switch changes from modern to vintage mode
I put one image to try to express myself better.
thanks a lot for the help.[/img]https://imageshack.com/i/n8mxq7p[/img]