FAT SWITCH schem needed, please.

[Colas LeGrippa]

Hi, I need to hook up a fat switch to a JCM800 .  A device that doesn't pop when switched, and that doesn't hum either. Any drawing / schem ?

Regards

Colas

[chocopower]

You can put a cap (1uf - 4,7uf - 22uf) bypassing the 820r resistor in the V2A cathode. I have done it several times without problem.
In one of my amps, i activate it via a footswicht (no relay, just close ground connection). You can put a 1M resistor as "anti-pop", but it dont use to be necesary.
Works like a champ

[Colas LeGrippa]

cool, thanks I'll get back to you when it's done.

Colas

[Tone Junkie]

You can also put a cap across your 470p and 470k resister put a .0022 on one end and 1 meg resister on the other and join them in the middle then put the switch on both ends of the 1 meg which shorts the 1meg resister out of the equation when you flip the switch.
Causing the .0022 to boost the low and upper mids. without any noise. I used it for a solo boost in one of my amps sounds great in a jcm 800.
Thanks Bill
You will have to forgive my odd explination its late and Im tired. 

[rock_mumbles]

Another fat boost is to switch in an 82k resistor in parallel with the 470k resistor in the signal path.

[tubenit]

Just some different examples.  There are other ways also.  Some of these aren't applicable for the JCM800 but I thought I'd illustrate them anyway

I have used the Dumblish style mid boost and preamp boost on tone stack after a cathode follower and like them. No noise switching


with respect, Tubenit

[Colas LeGrippa]

cool diagrams, thanx, brotha'

Colas