[sdiy] Jim Dunlop Cry Baby Wah-Wah.. 500mH inductor replacement .. Found a small professional MuMetal shielded matching transformer @ 530mH on primary..

Tue Jul 9 23:23:27 CEST 2024

All of my pedal board’s original ‘AC transformers type’ supplies have been replaced with one multiple outputs SMPS 6 outputs 9VDC at 300mA.

A type of multi-supply made for pedals with very clean outputs.

This has killed 80 to 90% of the induced HUM.

A company called Fulltone in California will make available
MuMetal shielded 500mH inductors to buy in the next 2 months.

This is the type of inductor they use in their expensive Clyde McCoy Wah’s.

Waiting their quote on these..

De : Synth-diy <synth-diy-bounces at synth-diy.org> De la part de Mr&MrsAccount
Envoyé : 9 juillet 2024 17:02
À : Brother Theo <brothertheo2014 at gmail.com>; Michael E Caloroso <mec.forumreader at gmail.com>
Cc : rburnett at richieburnett.co.uk; Synth-diy at synth-diy.org
Objet : Re: [sdiy] Jim Dunlop Cry Baby Wah-Wah.. 500mH inductor replacement .. Found a small professional MuMetal shielded matching transformer @ 530mH on primary..

You can try the mu-metal shield but I bet it will play havoc with the inductor value, so the end result might be unpredictable.

I think emulating the potentiometer will be harder than fixing the inductor hum issue. A real pot will allow almost any signal level with no distortion.

I'd fix the power supplies that make the noise rather than try to shield the inductor.

Harry Bissell

  _____  

From: Brother <synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org> >
To: Michael <mec.forumreader at gmail.com <mailto:mec.forumreader at gmail.com> >
Cc: rburnett <rburnett at richieburnett.co.uk <mailto:rburnett at richieburnett.co.uk> >; Synth-diy <Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org> >
Date: Tuesday, 9 July 2024 2:50 PM EDT
Subject: Re: [sdiy] Jim Dunlop Cry Baby Wah-Wah.. 500mH inductor replacement .. Found a small professional MuMetal shielded matching transformer @ 530mH on primary..

https://www.amazon.com/VIGORTRONIX-VTX-102-000-SCREENING-MU-METAL-SILVER/dp/B00IWJDCRY/ref=sr_1_7?dib=eyJ2IjoiMSJ9.e59VxqUKT4mFj2PDf59fSAjLES6Q8KWHvdMqBFiJTT3IKATwEOjZQIrWIx9bd0tuLTOrEkX1pftSEjkK9kk1qEmm_8AxqKmqkla41H2GJKNaK7GUu4EITng3fPijZcouN9vrkYJtZCMrLLN_EIt7y27bHvDco1wRsFNhb6SaE9bjwFP2km_hKXmilJQaQEF9552zJPNDR9T7n0mbDpW_fea2M_7fCAl_NJLqPXJ0lMQ.gy_wOcW36qJMWAhgxDn5YTRFRQkEcARvqXZ-TzVz8Io <https://www.amazon.com/VIGORTRONIX-VTX-102-000-SCREENING-MU-METAL-SILVER/dp/B00IWJDCRY/ref=sr_1_7?dib=eyJ2IjoiMSJ9.e59VxqUKT4mFj2PDf59fSAjLES6Q8KWHvdMqBFiJTT3IKATwEOjZQIrWIx9bd0tuLTOrEkX1pftSEjkK9kk1qEmm_8AxqKmqkla41H2GJKNaK7GUu4EITng3fPijZcouN9vrkYJtZCMrLLN_EIt7y27bHvDco1wRsFNhb6SaE9bjwFP2km_hKXmilJQaQEF9552zJPNDR9T7n0mbDpW_fea2M_7fCAl_NJLqPXJ0lMQ.gy_wOcW36qJMWAhgxDn5YTRFRQkEcARvqXZ-TzVz8Io&dib_tag=se&keywords=mumetal&qid=1720550424&sr=8-7> &dib_tag=se&keywords=mumetal&qid=1720550424&sr=8-7

On Mon, Jul 8, 2024 at 5:58 PM Michael E Caloroso via Synth-diy <synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org> > wrote:

In high school we used to charge the 140H taps in shop class then between classes in the hallways we'd discharge them on the girls' tushies to make involuntary muscle spasms. 

...I'm here the rest of the week...

MC

________________________________________________________
This is the Synth-diy mailing list
Submit email to: Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org> 
View archive at: https://synth-diy.org/pipermail/synth-diy/
Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy
Selling or trading? Use marketplace at synth-diy.org <mailto:marketplace at synth-diy.org> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20240709/f31bb3a7/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 46220 bytes
Desc: not available
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20240709/f31bb3a7/attachment.png>