pentode/triode switch, is this how it's done?

Regis · 08-23-2007, 12:23 AM

Still tinkering with my VOM Champ, thinking about doing the Pentode/Triode mod, is this how it's done?:

Dave Curtis, dB AudioTech · 08-23-2007, 03:34 AM

Yes.

Regis · 08-23-2007, 03:48 AM

Thanks Dave

Regis · 08-26-2007, 06:50 AM

Well I did the mod, and it works, but when I put it in triode mode there is a fair amount of hum not present in the pentode mode.

Is this normal, or is it my sloppy wiring technique?

thanks

regis

Konny · 08-26-2007, 07:39 PM

Hi Regis,

yes, in general a triode is more problematically concerning hum than a pentode, so there´s nothing to worry about.

Nevertheless, a good wiring helps alot keeping your amp quiet

I´m also about to build a champ. Do you think the triode-mod is worth the effort? Or does the mod do minor changes in sound?

cheers,
Swen

08-23-2007, 03:48 AM	#3
Regis Senior Member Join Date: May 2006 Location: Atlanta Posts: 376	Thanks Dave __________________ Stop by my web page!

08-26-2007, 06:50 AM	#4
Regis Senior Member Join Date: May 2006 Location: Atlanta Posts: 376	Well I did the mod, and it works, but when I put it in triode mode there is a fair amount of hum not present in the pentode mode. Is this normal, or is it my sloppy wiring technique? thanks regis __________________ Stop by my web page!

08-26-2007, 07:39 PM	#5
Konny Member Join Date: Jul 2007 Location: Germany - Cologne Posts: 29	Hi Regis, yes, in general a triode is more problematically concerning hum than a pentode, so there´s nothing to worry about. Nevertheless, a good wiring helps alot keeping your amp quiet I´m also about to build a champ. Do you think the triode-mod is worth the effort? Or does the mod do minor changes in sound? cheers, Swen __________________ Crank it up! - Go Shake, Rattle & Roll

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08-23-2007, 03:34 AM	#2
Dave Curtis, dB AudioTech Senior Member Join Date: Jun 2007 Location: USA Posts: 274 Member's Picture Albums	Yes.

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