Yup, this should do the job as well.jymaze wrote:Or 33nF in parallel with 4.7nF... It would be quite close.
Paul Cochrane - Timmy [traced]
- beedotman
- Diode Debunker
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http://www.turretboard.org 4 life!
- paulc
- Resistor Ronker
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paulc wrote:The 33nf cap will raise the -3dB point of the filter from 1235hz to 1460hz. That's less than 1/10th of an octave which would be very hard to hear.
Can't do math... It's more like 1/5th octave. Still not enough of a difference to call it a new design.
- beedotman
- Diode Debunker
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Guys... I have a question, maybe stupid, but...
In Timmy we have got max gain resistor (3K3 in this case) going from IC leg 2 before Bass cut capacitors going to Vref.
In TS type pedals it is oposite - first is cap, then resistor responsible for max gain of pedal (4K7 in stock circuit).
Is this make any difference what is connected to Vref?
In Timmy we have got max gain resistor (3K3 in this case) going from IC leg 2 before Bass cut capacitors going to Vref.
In TS type pedals it is oposite - first is cap, then resistor responsible for max gain of pedal (4K7 in stock circuit).
Is this make any difference what is connected to Vref?
http://www.turretboard.org 4 life!
- phibes
- Transistor Tuner
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Order doesn't matter, it's a RC filter. Will work the same either way.
GuitarlCarl - "TGP = The Gear Polishers"
Ken
Ken
- beedotman
- Diode Debunker
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Thanks!phibes wrote:Order doesn't matter, it's a RC filter. Will work the same either way.
http://www.turretboard.org 4 life!
Hi! I'm another Timmy clone builder, with a small problem.
The bass an treble pots only works in an very short part of the turning range - does anybody have an idea of what mistake I made, or if they are supposed to function like that?
Kindly,
Christian
The bass an treble pots only works in an very short part of the turning range - does anybody have an idea of what mistake I made, or if they are supposed to function like that?
Kindly,
Christian
- batteryacidtea
- Breadboard Brother
Are you using the right taper pots?
- atreidesheir
- Diode Debunker
Is the Timmy the 2nd best analyzed circuit after the TS?
"Contemplate it - on the tree of woe." :Thulsa Doom
- paulc
- Resistor Ronker
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Which outer leg? That makes a big difference. It should be wired so that at zero or 7'o'clock the element is shorted out.chrills wrote:Yes.. well I guess so, 50K audio, both have the center leg connected to one of the outer legs.
- IvIark
- Tube Twister
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The Timmy is still the 2nd most analysed circuit, but the Klon diodes is first. No one analyses the TS any more, we all just wait for the 78th revision of the Eternity to see what's happening there.
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP
- atreidesheir
- Diode Debunker
good point though.paulc wrote:I don't think so. The klon has it's own sub forum here.atreidesheir wrote:Is the Timmy the 2nd best analyzed circuit after the TS?
I lose interest in Klon after the dual gain pot. I like that.
"Contemplate it - on the tree of woe." :Thulsa Doom
- Seiche
- Old Solderhand
yeah one side makes it go zap, all there or all gone, and one side makes it be gradual.chrills wrote:Yes.. well I guess so, 50K audio, both have the center leg connected to one of the outer legs.
remember the timmy has treble and bass CUT, which means the bass and treble REDUCE when you turn the knobs to the right.
Exactly... zap on the last 10%. But I guess it doesn't matter if the cut is in the beginning or in the end of the turn..?Seiche wrote:yeah one side makes it go zap, all there or all gone, and one side makes it be gradual.chrills wrote:Yes.. well I guess so, 50K audio, both have the center leg connected to one of the outer legs.
remember the timmy has treble and bass CUT, which means the bass and treble REDUCE when you turn the knobs to the right.
- Seiche
- Old Solderhand
well it just means you wired the pot wrong. an audio pot is not symmetrical in that sense. you have to switch the wires going to lug 1 and 3 on each pot and then you should get a pot that gradually reduces bass/treble when turned to the right. that's how the original timmy works. If you prefer it the way you have it, you need an antilog/revlog pot.chrills wrote:Exactly... zap on the last 10%. But I guess it doesn't matter if the cut is in the beginning or in the end of the turn..?Seiche wrote:yeah one side makes it go zap, all there or all gone, and one side makes it be gradual.chrills wrote:Yes.. well I guess so, 50K audio, both have the center leg connected to one of the outer legs.
remember the timmy has treble and bass CUT, which means the bass and treble REDUCE when you turn the knobs to the right.