Tryian Distortion EQ questions

[mjh36]

So my first build, Tyrian distortion, went great but i feel i may have missed the mark with the EQ controls. I have never played a Revv G3 to compare so maybe other Tyrian owners can chime in.

Volume: works great
Gain: works great
Agression Switch: yup sounds good

(Knob value 0-10)

Bass: 0-3 i can tell it does something, but 4-10 can't tell if it's adding bass.
Mids: 0-10 works ok, but I keep it at 10
Treble: 0-10 works ok, but i keep it at 10 (8-10 being where i hear the treble really kick in)

Plus i have to use a little Post FX Eq to add even more mids and treble to dial it in. Maybe this pedal is more compressed in nature?

Not complaining i can still dial in a great sound but wondering if it's the way this pedal works. Or is there anything i can check? I multimetered every component before installing. But remember first build here.

 

[Barry]

I don't recall such a limited range when dialing in mine, I'll try to check it later, when selecting Potentiometers did you use correct Taper?

 

[mjh36]

I don't recall such a limited range when dialing in mine, I'll try to check it later, when selecting Potentiometers did you use correct Taper?

Pretty sure about the pots, I will check into this today. I will also find out how to measure potentiometers with my dmm and i will get back to you about values.

 

[mjh36]

I don't recall such a limited range when dialing in mine, I'll try to check it later, when selecting Potentiometers did you use correct Taper?

Ok tapers looked like they match. I looked up how to measure Ohms and Voltage on pots here's what i found.

Ohm's:
A100k Bass: 0-101k
B100k Mids: 0-101k
A50k Treble: 0-50k
A50k Volume: 0-50k
B1M Gain: 0-1M <-------- Weird one. Pins act different than the other pots in the board or that i have, ill put it left to right, pins 1 2 3.

B1M Gain resistantce:
Pins 1+2: Good, 0-1M
Pins 1+3: Resistance sweeps 0-1M (!) Not like my other pots which have fixed value.
Pins 2+3: 0, no reading, no sweep happening

Voltage (hooked up 9v battery to pins 1+3 of each pot, probes to pin 1+2)
A100k Bass: 0-8.33V
B100k Mids: .003-8.30V <----- Not gradual, immediatly jumps to 6 Volts as you turn it up past 0.
A50k Treble: 0-8.33V
A50k Volume: 0-8.34V
B1M Gain: 1.15-7.91V <----- Not gradual, immediately jumps to 7 Volts after turning from 0.

Gain and Mids look suspicious, though Bass pot reads ok even though i thought I'd find something there. I don't know if this is right, or if pots behave different once soldered to a pcb and connected to who knows what. But they behave different when i compare to loose pots in a bag.

Any tips of what i should do?

 

[PJS]

Pin 2 and 3 of the gain control are tied together on the circuit board, so your behaviour for that pot is ok.

 

[Chuck D. Bones]

Do not hook up a battery across the pots, you could damage the pot or other parts of the circuit. Your Gain pot is probably toast now.

 

[mjh36]

Do not hook up a battery across the pots, you could damage the pot or other parts of the circuit. Your Gain pot is probably toast now.

Gotcha good to know. It turns on fine but i may change the gain and mid pot anyway now that you mention.

 

[mjh36]

Changed gain pot, same as before, works good. I'll probably stop kicking a gift horse in the mouth. My first pedal works great, if I gotta max the EQ to dial it in i can live with that.