Catalinbread - Formula No. 5  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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shiner_man
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Post by shiner_man »

Hmmm...I just realized something. I have the resistor wired to the top two lugs of the spst switch. That means when the switch is DOWN the 2m2 resistor is in place making it sound like the original trace.

So I'm wondering what is going on when the 2m2 ISN'T in the circuit. I must have screwed up the wiring on the switch or something.

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joeboo88
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Post by joeboo88 »

Shiner man i forgot to pull the resistor out, so i can make a comparison. (i'll do that now)
Nocelli wondered wht trannies you used. I used 2 j201's and
2 2n584's. J201's are hotter, so i'm told. The 2n584's are ? I used them cause thats all i had at the time.
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shiner_man
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Post by shiner_man »

I used all 2n584.

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joeboo88
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Post by joeboo88 »

Shiner Man, i pulled out the resistor (and my wife yelled at me to turn that crap down!)
Yeah the thing turns into a snotty biotch( the pedal ), It is louder and way more gain. ( i'm gonna put in a switch now)
You might have to double check you're stuff...But look on the bright side you might have just invented a new pedal! :mrgreen:
Good luck bro
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Nocentelli
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Post by Nocentelli »

OK - voltages taken with 2M2 resistor in place, Q1-4 are 2N5457:

Power supply 8.95v -
Q1:
D 4.27
S 0
G 0

Q2:
D 8.94
S 4.27
G 2.97

Q3:
D 4.83
S 0
G 0

Q4:
D 8.94
S 4.84
G 2.97

I kind of suspect the different sound and voltages may just be to do with using different FETs to the specified 2N5457... Since you've socketed them, this would be pretty easy to check. Good luck, and give us a shout if you need anything else.
modman wrote: Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...

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shiner_man
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Post by shiner_man »

Okay, dumb question. How is that resistor supposed to be wired to the switch exactly?

I have the resistor on lugs 1 and 2 and the wires on lugs 1 and 3. Shouldn't the wires be on lugs 1 and 2? :scratch:

And why am I confusing myself with such simple electronics? I think I need a beer.

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Nocentelli
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Post by Nocentelli »

Your way of wiring it sounds right (wires to 1+3, resistor across 1+2, as per https://www.freestompboxes.org/download/ ... &mode=view) - If the wires were also on 1+2, it would short the resistor and therefore directly connect Q1's drain and source.
modman wrote: Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...

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Post by Nocentelli »

Nocentelli wrote:Q1's drain and source.
er, I mean drain and gate, of course...
modman wrote: Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...

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shiner_man
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Post by shiner_man »

Hmmmm...everything looks right to me.

Image

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joeboo88
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Post by joeboo88 »

Nocentelli, sorry i typed your name wrong b4, would Shiner man's transistors make a huge difference?
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Post by joeboo88 »

Hi Shiner man, i just did a quick check of your layout, against the vero and it look good, the only thing i can think of is
maybe the pot(s) are different? Sorry i'm just chucking stuff out there.
Good luck bro
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sjturbo
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Post by sjturbo »

I recently pickup a pcb from coldcraft and wondered if anyone had a BOM and which caps were box caps? Also if anyone also got a pcb from him and has a gut shot of the completed pedal I would appriciate a copy. Thanks!

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sjturbo
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Post by sjturbo »

Rephrasing the last post - If anyone has had a "successful" build using coldcraft's pcb could you please post a BOM including which are box style caps? Thanks!

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plesur
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Post by plesur »

sjturbo wrote:Rephrasing the last post - If anyone has had a "successful" build using coldcraft's pcb could you please post a BOM including which are box style caps? Thanks!
If the PCB you are using is my one viewtopic.php?f=7&t=9373&start=140#p130101 this is the BOM.

Code: Select all

R01	Resistor	1M
R02	Resistor	62k
R03	Resistor	1M
R04	Resistor	2M2
R05	Resistor	1M
R06	Resistor	1M
R07	Resistor	10k
R08	Resistor	10k
R09	Resistor	1M
R10	Resistor	1M
R11	Resistor	47k
R12	Resistor	1M
R13	Resistor	10k
R14	Resistor	47k
C01	Capacitor	2u2	Electrolytic
C02	Capacitor	4u7	Electrolytic
C03	Capacitor	100n	Electrolytic
C04	Capacitor	47u	Electrolytic
C05	Capacitor	1n
C06	Capacitor	470p	 Styroflex
C07	Capacitor	4n7
C08	Capacitor	100n
C09	Capacitor	100n
C10	Capacitor	47n
C11	Capacitor	1n
C12	Capacitor	1n
Q01	Transistor	2N5457
Q02	Transistor	2N5457
Q03	Transistor	2N5457
Q04	Transistor	2N5457
P01 TONE	Potentiometer	1MB
P02 GAIN	Potentiometer	1MA
P03 VOLUME	Potentiometer	500kA
DC	Socket
IN	Socket
OUT	Socket
ENCLOSURE
BATTERY CLIP
LED
SWITCH	3PDT
BEZEL
KNOB1
KNOB2
KNOB3
D01	Diode	1n4001

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coldcraft
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Post by coldcraft »

Yes, that is what the PCBs were made from.
Black Dynamite wrote:you need to shut the fuck up when grown folks is talkin.

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sjturbo
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Post by sjturbo »

Thanks much for th eparts list! much appreciated! Does anyone have a gut shot using this pcb! Also has anybody done a shoot out with this pcb version and the original? I would be interested in hearing it.
Thanks again to plesur and coldcraft!!

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bigmufffuzzwizz
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Post by bigmufffuzzwizz »

Hey shiner man. I just read up through your troubleshooting. You said you have 2n4548's in your build and the build doc says 2n4547's. I believe those two are different and 2n4548's and J201 transistors are the similar interchangable ones. Try grabbing some of those and see if it fixes your problem. They are pretty cheap! :D
Also looking at your posted picture, I would trim the leads on the bottom down more if you can. I use a pair of flush cutters and I'm able to get all the excess lead off. Helps to prevent any kind of shorting.
Magic Pedals Home of The Shrine Fuzz!

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joeboo88
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Post by joeboo88 »

Biggmuffwiz, Shiner_man said he used
by shiner_man » 02 Apr 2011, 21:03

I used all 2n584.


But your right about him shaving the teeth of those solder teeth :mrgreen:
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joeboo88
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Post by joeboo88 »

I forgot to mention i used 2 2n5484's and 2 j201's and my build sounds like its supposed to, but maybe he should use 4 2n5457's like you suggest.
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shiner_man
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Post by shiner_man »

bigmufffuzzwizz wrote: Also looking at your posted picture, I would trim the leads on the bottom down more if you can. I use a pair of flush cutters and I'm able to get all the excess lead off. Helps to prevent any kind of shorting.
Which leads do you speak of? The ones on the bottom of the vero or the ones connected to the spdt switch?

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