noisy wah-wah

jrc4558 · October 04, 2003, 12:36:03 AM

i have built the realMcCoy Wah from Fuzzcentral in a standard Dunlop shell using the Dunlop inductor. Is this thing noisy!!!
The thing was perfboarded ( i don't like etching) and the inductor is quite close to the transistors, which are BC107B's. What can be the problem?
Thnx.

jrc4558 · October 05, 2003, 01:29:43 AM

so?
thanx.

Joep · October 05, 2003, 05:13:23 AM

Hi Constantin,

What's the noise, is is hiss or humm, do you hear it always or is in a certain position of the wah pedal?

Bye,

Joep

jrc4558 · October 05, 2003, 11:07:47 AM

it is more of a hum. very similar to the hum of a overdrive pedal fed with single coil pickups, however not the 60cycle.

Paul Perry (Frostwave) · October 05, 2003, 07:37:06 PM

Is the hum frequency constant?

jrc4558 · October 05, 2003, 09:54:55 PM

yes. it just looses some trebles when the pedal is rocked back.

gez · October 06, 2003, 03:33:39 AM

Grounding problem perhaps?

jrc4558 · October 06, 2003, 08:06:23 AM

I would doubt so; for the jacks should be transmitting ground to the shell.

Joep · October 06, 2003, 08:43:54 AM

The Jack's in my Dunlop Cry Baby are isolated from the shell.....

Paul Perry (Frostwave) · October 06, 2003, 09:08:10 AM

Might be worth trying it out in a different location, in case it is picking up interfernce from a light dimmer or similar. Providing you have already tried a battery (in case there is wall wart hum involved).Unliely, but I can't see why a wah would pick up hum?? they aren't high gain or anything.

jrc4558 · October 07, 2003, 07:48:48 AM

I will be off experimenting. Will post results if arrive at a decent SN ratio.

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noisy wah-wah