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Post by flateric on Dec 17, 2010 13:23:11 GMT -5
Some more builds for friends and band members.  Version 2 of the Phat & Clip switch Tubescreamer + MosFet Boost pedal with different paint job  BB Preamp clone pedal - basically TS9 circuit but with extra opamp chip and active treble/bass knobs - very sweet   An old one - A/B + X/Y passive switching pedal - used for 2 different guitar inputs split to either amp or tuner. |
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Post by ijustwannastrat on Dec 17, 2010 14:29:59 GMT -5
For that passive splitter, is there anything other than wires, jacks, and switches in there?
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Post by flateric on Dec 17, 2010 14:56:31 GMT -5
Yep - theres some blu-tak and a pp3 battery - oh and a resistor keeps the switch popping quiet. |
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Post by thetragichero on Dec 17, 2010 16:00:29 GMT -5
it's dudes like you that make me want to build [more] pedals ordered the parts for a dallas arbiter fuzz face clone (germanium, of course), so i'll have yet another winter project  |
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Post by flateric on Dec 17, 2010 16:24:17 GMT -5
Nice one - that's an all time classic - don't forget to post pics!
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Post by thetragichero on Dec 17, 2010 17:49:05 GMT -5
will using an electrically better component (ie 1% metal film resistors instead of 5% carbon comp) give me a less desirable result sound wise?
i've got a bunch of leftover metal films in my parts box from upgrading the bias resistors on my marshall, and if i can use them instead of placing yet another mouser order then it's all the better
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Post by ashcatlt on Dec 17, 2010 20:14:07 GMT -5
Your results will be a little less random...
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Post by thetragichero on Dec 17, 2010 20:56:20 GMT -5
works for me just didn't know if i'd lose any of that mojo  |
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Post by gfxbss on Dec 18, 2010 0:11:28 GMT -5
Mojo is all by ear..... None of us can say whether it will sound better or worse. A metal film will be closer to the value called for in the schematic, But the FF's w/ all of the mojo may have well been out of tolerance....
I can tell you that I primary use metal film in my pedals, but that is all I can say....
Tyler
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Post by flateric on Dec 18, 2010 4:42:20 GMT -5
It won't affect the sound quality, I mostly use the 5% tolerance resistors I have available in my box of bits here. If it calls for a 51k resistor, and I don't have one, I put in a 47k as it's within the 5% tolerance of the value. There are some circuits that are quite sensitive to needing exactly the correct resistance, some transistors that need biasing properly to get better gain, but an old Ge fuzz face circuit was built around old components (particularly the Ge transistors) that had far more variability in them than we get nowadays. I'd think you'd be fine either way with 1% or 5% resistor tolerances but you may want to get a couple extra Ge's and try them to see which you think sounds best.
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Post by ijustwannastrat on Dec 18, 2010 11:12:17 GMT -5
Yep - theres some blu-tak and a pp3 battery - oh and a resistor keeps the switch popping quiet. Want to explain how to do the silencer resistor? I plan to make a box with a constant in (guitar), constant out (tuner), and two switchable outs (amps) |
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Post by flateric on Dec 18, 2010 14:33:31 GMT -5
simply a 1 or 2 meg resistor across the live and ground of the input jack helps reduce popping when you switch the pedal on - something to do with restricting current surge and LED's. If u don't have the indicator LED's then circuits are less prone to popping, but there's a lot more detailed posts here on this topic by more knowledgable people.
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Post by thetragichero on Dec 18, 2010 20:45:16 GMT -5
okay i bought a breadboard today and made a rudimentary transistor tester for gain and leakage
i'm ready to start tweaking with pedal builds, and i can't be more excited!
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