Thanks Ken , I'll try it out.
Stephen
________________________________
From: "sasami@..." <sasami@...>
To: cgs_synth@yahoogroups.com
Sent: Monday, October 17, 2011 5:05 PM
Subject: Re: [cgs_synth] Best of CGS Panel #3 Oscillator signal bleed problem
Things to try:
1) increase the size of the decoupling capacitors near the oscillator power
connetions. Add 100n caps there as well.
2) Run a separate set of wires from the oscillators to the power supply, so
that the oscillators and the other circuits are not sharing the same wires.
3) Use a bigger power supply, or a second supply to power just the
oscillators. The two power supplies would need their 0V lines connected to
each other, but NOT the other lines.
Ken
i can still hear the oscillators in the background regardless of whether i
take my output signal from VCA's or from the Dual Mixer.
connected to the Power Module's main Earth Stud.
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
[Non-text portions of this message have been removed]
Stephen
________________________________
From: "sasami@..." <sasami@...>
To: cgs_synth@yahoogroups.com
Sent: Monday, October 17, 2011 5:05 PM
Subject: Re: [cgs_synth] Best of CGS Panel #3 Oscillator signal bleed problem
Things to try:
1) increase the size of the decoupling capacitors near the oscillator power
connetions. Add 100n caps there as well.
2) Run a separate set of wires from the oscillators to the power supply, so
that the oscillators and the other circuits are not sharing the same wires.
3) Use a bigger power supply, or a second supply to power just the
oscillators. The two power supplies would need their 0V lines connected to
each other, but NOT the other lines.
Ken
>Hi Ken and Allget rid of the signal bleed from the CGS 48 oscillators.
>
>I built the Best of CGS Panel #3 last year and i have never been able to
>panel's output into a mixer , even with the output turned all the way down ,
>To describe what is happening : Even with nothing patched ; when i plug the
i can still hear the oscillators in the background regardless of whether i
take my output signal from VCA's or from the Dual Mixer.
>Output signal is on the Tip. That Earth from the cable goes to a Banana Jack
>I am powering the panel with and elby all in one power module 30VA +/-15VDC.
>
>I'm using a split output cable with the Earth coming off the Sleeve ,
connected to the Power Module's main Earth Stud.
>panel via CGS Distro which is insulated from the Chassis.
>On the 15V side of the Power Module + , - and Earth is connected to the
>__________________________________________________________
>I have not taken any Earth Connection directly to the Chassis.
>
>many thanks
>
>Stephen
>
>
>
>
>
>
>
>------------------------------------
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
[Non-text portions of this message have been removed]