Korg Forums

Hi .
how to fix the pop issue when you turn off Korg Pa3 ?
It is a real trouble ... Can someone , who knows about electric , tell to do something with this ???

The amplifier should always be the first item to power off.

Ian

Lika wrote:Hi .
how to fix the pop issue when you turn off Korg Pa3 ?
It is a real trouble ... Can someone , who knows about electric , tell to do something with this ???

Λάκη
Normally every output of such equipment have an output voltage short circuit stage that uses
J-fet transistors to mute any capacitance discharge voltage leakage when power supply is turned off.
Obviously that stage doesn't exist in Pa3X output module so ...

Only an εlectronics technician can design such an output damper circuit there , in two ways
- The ordinary applied as mentioned above , using two bipolar J-fet transistors or OPA with
inverse bias that mutes output when power supply is suddenly reduced.
- The easy way is to design a simple transistor circuit that controls a reversed bias reed relay
that will short circuit and mute output when 12V power supply is reduced at 10 volts.

This post does not concern Musicians , but I propose some instruction ideas for anybody is interested !

Else the obvious ... always turn off your PAS as first !