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

andymac1962 · December 19, 2011, 11:52:43 PM

can add 1 more switch, a NOTCH DEPTH switch.
change R13 to 18K
in parallel with R13 fit a 22K in series with a switch.
when the switch is open, we have 18K & a larger Notch depth
when the switch is closed we have 18K in parallel with 22K (approx 10K) and a "standard" notch depth

J0K3RX · December 20, 2011, 01:04:56 AM

Would a contour type knob be possible? Maybe a stupid question...

deadastronaut · December 20, 2011, 04:44:53 AM

@andy: cool mods and use of the 4.7/2.2 to make the classic 6.8/9 too...nice.....but i just wanted rid of toggles though...i'm a clumsy @#$%er..and just thought it'd be neater on the box too...

btw sign up to http://www.dropbox.com/ its simple and free...for pic uploading...

@jok3rx : arghhhhhhhhh more knobs...........i put a 47k pot before the 1uf in the tonestack and that was quite tweakable too...along with the 2.2n ...

deadastronaut · December 27, 2011, 05:11:08 PM

righto, i'm back on it after the xmas pissup...

anyway...hangover over...for now!..

ive been messing around with rotary switches...and getting confused as @#$%... $:-\$

i have a 2pole 6 way, a 1 pole 12way, and a 3pole 4way...now what i want to do is ....

modern 1 2.2n
modern 2 4.7n
classic 6.8n

but....heres where it does my head in..

i want to be able to select between those 3 options, plus add the hi cut/blues/fuzz options too each of the 3 options...get me?.......arghhhhhhhhhhhhhhh...my @#$%ing head!..

any suggestions?..

sundgist · December 27, 2011, 06:03:00 PM

You're not after all the possible options on the one rotary are you?

deadastronaut · December 27, 2011, 06:04:20 PM

yep!...

sundgist · December 27, 2011, 06:57:31 PM

Can't tell how many switches you've got at the mo, but....

Modern 1 / Modern 2 / Classic = 1p3t

Add Hicut / Blues / Fuzz to each of the above = 2p9t

Add any more to each of those? each switch = add a pole / multipy the throws

If it's just those above maybe find 3 of those permutations that are either similar enough or that you can live without and use the 2p6t.
Otherwise just adding a 1p2t to the above would require 18 positions.

waltk · December 27, 2011, 07:00:55 PM

Quotei want to be able to select between those 3 options, plus add the hi cut/blues/fuzz options too each of the 3 options

If you want to have all the settings controlled with one rotary switch, then the number of unique combinations of settings determines how many "ways" (throws) the switch must have. If you have 3 settings for modern1, modern2, and classic and 2 settings for hi-cut or fuzz, then you have 6 unique combinations:

Modern1-Fuzz
Modern2-Fuzz
Classic-Fuzz
Modern1-hi-cut
Modern2-hi-cut
Classic-hi-cut

So you need a 6-way switch. Your 2P6T switch would be perfect for this. One of the two common connectors in the middle of the switch goes to ground (to switch the fuzz/hi-cut caps). Each of the fuzz/hi-cut caps connect to three of the twelve terminals around the outside of the switch - so half of the 6 switch positions have the fuzz cap connected, and half have the hi-cut cap connected. Every alternate connector around the outside of the switch should have one of the fuzz/hi-cut caps connected to it.

Similarly, the other terminal in the middle of the switch connects to the junction of Q5 and R11. Each of the modern1/modern2/classic caps is connected to 2 of the remaining 6 connectors around the outside of the switch.

The end result is that position of the 6-way switch is used to represent one of the 6 combinations of modern1/modern2/classic and fuzz/hi-cut.

...unless I completely misunderstood what your are trying to do - then all bets are off.

Edit: Uhhh... just recalled that the fuzz/hi-cut switch might need three positions (including off). For that you would need a 2P9T - or an additional SPST switch.

deadastronaut · December 28, 2011, 05:49:00 AM

ahhhh walt, your solution was nearly there ..apart from that bloody off! which gives the fender-ish sound to it.....shame!.arghhhhh...

i think i'll just stick to 2 toggles in the end, its just more logical and instantly visible and selectable too....thanks for your ideas though chaps...

i was just over-thinking a simple issue..and being a greedy bastard too.......still ya gotta aim high right!..... cheers guys.

deadastronaut · December 30, 2011, 11:32:58 AM

andymac got me thinking.....

right, i'm going down the kiss (keep it simple stupid ) route...

ive done away with , sustain boost/cut switch..

and hi/cut blues fuzz switch.....just having blues on all time..

so..

left with one switch ok...

heres the idea to have modern 1 / modern 2 / classic..

using an on/on/on spdt, _ = lugs of switch.

_ 2.2n modern 2

_ 2.2n modern 1

_4.7n classic

shouldn't it?...the 2.2n being the middle lug on always.... and adds to the other 2.2n to make 4.4n.....and 2.2n adds to 4.7 to make 6.9....is that right?.. 2.2n

like this..

Perkla · December 30, 2011, 12:57:09 PM

This pedal is very interesting i think.. is this a clone of something ? is there a way to get more gain out of it ?, is the SPDT a mode selector with different sound patterns ?

deadastronaut · December 30, 2011, 01:06:09 PM

its based on a russian version of the bsiab called bsiab-x , but with selectable tone controls....much better than a standard bsiab imo..

more gain?...

theres a lot on tap as it is imo.....

....you may want to try the dr boogie instead then..

yes the spdt is a tone selector..

alas i think ive messed up the caps, i need to readjust it, for series..

...i'm working on it now on breadboard...

report back later..

edit: right ive got it now...

_ 6.8n giving 4.6n modern 1

_ 2.2n giving modern 2

_10n.....giving 7.8n classic

sorted...i'll try it

Perkla · December 30, 2011, 01:40:38 PM

Quote from: deadastronaut on December 30, 2011, 01:06:09 PM
its based on a russian version of the bsiab called bsiab-x , but with selectable tone controls....much better than a standard bsiab imo..

more gain?... theres a lot on tap as it is imo..... ....you may want to try the dr boogie instead then..

yes the spdt is a tone selector..

alas i think ive messed up the caps, i need to readjust it, for series.. ...i'm working on it now on breadboard...

report back later..

edit: right ive got it now...

_ 6.8n giving 4.6n modern 1

_ 2.2n giving modern 2

_10n.....giving 7.8n classic

sorted...i'll try it

I saw your video of the version number 2.. and i like that the most i think.. just cus it have alot of different modes... wich one should i build.. ?

deadastronaut · December 30, 2011, 01:45:20 PM

go for version 2, its the same, i just squeezed the layout to fit a 1590b box easier...

this version 3 will just have 1 toggle instead of the 3...i'm just making things simpler for myself after a few weeks of playing through it

and finding the options that i want and actually need....its a great distortion man...build it you won't be disappointed i can assure you...

edit: you might want to wait for version 3...i'll have it up real soon...

Perkla · December 30, 2011, 01:53:51 PM

Quote from: deadastronaut on December 30, 2011, 01:45:20 PM
go for version 2, its the same, i just squeezed the layout to fit a 1590b box easier...

this version 3 will just have 1 toggle instead of the 3...i'm just making things simpler for myself after a few weeks of playing through it

and finding the options that i want and actually need....its a great distortion man...build it you won't be disappointed i can assure you...

edit: you might want to wait for version 3...i'll have it up real soon...

I just printed the wiring diagram to get a hang of what its all about, D1 could i use what ever i wanna ? 1N914, 1N4148 etc etc ?

What does VR1 100k lin means.. i only see 3 pots.. but the VR makes it 4.. ?

I have all the components but not the switches.. so i will order that and when i got them i will make a build of this..

I have 1590B enclosures here.. and the PCB seems to fit just fine..

deadastronaut · December 30, 2011, 02:01:17 PM

ignore the list go by the diagram ok......don't worry its only 3 pots .. no trimmers etc........

the 1n4001 is just a polarity protection device just to stop damage in case of people plugging in a tip positive supply ok...it can be left out....

i just prefer to put it in for other peoples use....you know what people are like...(like my mate who destroys stuff all the time..

edit:

1MA GAIN
47K LIN TONE
10K LIN VOLUME...

Perkla · December 30, 2011, 02:06:58 PM

I see.. well i dont destroy stuff at all.. or well i have been smashing the shit out of a couple of strats on stage when i was young.. but now i am old and vice

Anyway.. do u have a wiringdiagram how to hook up the 3PDT switch to this circuit as well as in and out on the circuit.. i dont think i can manage.. i am old remember..

deadastronaut · December 30, 2011, 02:10:37 PM

ok you old bugger, here ya go..

....so am i btw..

http://gaussmarkov.net/wordpress/thoughts/wiring-up-a-1590b/

bookmark it..

Perkla · December 30, 2011, 02:14:23 PM

Quote from: deadastronaut on December 30, 2011, 02:10:37 PM
ok you old bugger, here ya go.. ....so am i btw..

http://gaussmarkov.net/wordpress/thoughts/wiring-up-a-1590b/

bookmark it..

Hahahaha.. thanx.. that will do it.. and i belive i could ask u here when i am actualy building this..

I am gona order some other components and enclosures to so i thought i order the things i need for this one as well.. and try it out

...but.. i can not get 47k pot... will a 50k do the job as good ?

deadastronaut · December 30, 2011, 02:20:59 PM

yeah, it''l be fine...in uk we have 47k's..in usa etc they have 50k's...

same as 470k/500k...etc... just the way it is..

again you might wanna hold fire and wait for the version 3...less switches, and better imo...

i'll post it up later or tomorrow ok...i'm just trying to find a @#$%ing on on on switch arghhhhh......

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