GU-19 In priboi

tchiwam · 16th January 2011, 07:28 PM

I got the GU-19 tubes and tried them right in the Priboi.
Anode = 480V
G2 = 240V
G1 = -20V

I can't get lower yet with this chasis, I guess -15V should be better.

The sound is OK, Sad thing is I don't have a proper model. Any ways I could wire the transformer to give 420V instead of 480V ?

Wavebourn · 16th January 2011, 07:33 PM

May be some quiet fan can help?

tchiwam · 16th January 2011, 07:39 PM

No fan needed, well yet...

The design quality of the GU-19-I is amazing compared to the 6R3S ! What I need now is a proper spice model for that lamp. At -25V it start clipping.

zbodeoc · 4th April 2011, 08:06 AM

Hi there! Long time no see...

Quick question, have anyone tried viceversa? I mean replacing FU29(GU29) with 6R3S (Proboi-like) into an amplifier like this one? AUDIOROMY "FU29" Integrated Amplifier - FU29 Tube Amp @ on9mart.com

Thanks!

16th January 2011, 07:28 PM	#1
tchiwam diyAudio Member Join Date: Sep 2010 Location: Lapland, Finland	GU-19 In priboi I got the GU-19 tubes and tried them right in the Priboi. Anode = 480V G2 = 240V G1 = -20V I can't get lower yet with this chasis, I guess -15V should be better. The sound is OK, Sad thing is I don't have a proper model. Any ways I could wire the transformer to give 420V instead of 480V ?

16th January 2011, 07:33 PM	#2
Wavebourn diyAudio Member Join Date: Sep 2006 Location: Pleasant Hill, CA	May be some quiet fan can help? __________________ If I disappear suddenly, that means I finally created a time machine and pushed wrong button that brought me to Stalin's Russia. In any experiment any result is the result. Even if it is negative.

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16th January 2011, 07:39 PM	#3
tchiwam diyAudio Member Join Date: Sep 2010 Location: Lapland, Finland	No fan needed, well yet... The design quality of the GU-19-I is amazing compared to the 6R3S ! What I need now is a proper spice model for that lamp. At -25V it start clipping.

4th April 2011, 08:06 AM	#4
zbodeoc diyAudio Member Join Date: Jul 2004 Location: Bucharest	Hi there! Long time no see... Quick question, have anyone tried viceversa? I mean replacing FU29(GU29) with 6R3S (Proboi-like) into an amplifier like this one? AUDIOROMY "FU29" Integrated Amplifier - FU29 Tube Amp @ on9mart.com Thanks!