RE: Can I use GZ34 in my Art Audio Jota?

Tubes Asylum

Questions about tubes and gear that glows. FAQ

In Reply to: Can I use GZ34 in my Art Audio Jota? posted by Jay Buridan on October 21, 2014 at 18:48:04:

Mike Samra is correct about the '34 drawing less heater current. However, forward drop in the '37 is greater and the '37 can furnish more B+ current. A GZ37 can furnish 275 mA. of B+ working into a cap. I/P filter. Working into a choke I/P filter, a GZ37 can furnish 350 mA. of B+ current. The 5AR4/GZ34 is good for 250 mA.

If the total B+ draw of the circuitry is 250 mA. or less, a 5U4GB is a definite possibility. No slow B+ rise here, but the forward drop characteristic should be pretty darned good.

Eli D.

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Follow Ups Full Thread

Topic - Can I use GZ34 in my Art Audio Jota? - Jay Buridan 18:48:04 10/21/14 (5)

Try the Mullard GZ33 - Maxamillion 12:21:51 10/22/14 (0)

RE: Can I use GZ34 in my Art Audio Jota? - Eli Duttman 10:27:31 10/22/14 (0)

RE: Can I use GZ34 in my Art Audio Jota? - Michael Samra 21:10:32 10/21/14 (2)

I'd like my preamp to work a little harder - Jay Buridan 08:22:41 10/23/14 (1)

A different rectifier won't change the gain very much. - JJ Triode 21:02:31 10/27/14 (0)

Follow Ups

RE: Can I use GZ34 in my Art Audio Jota? - Eli Duttman 10:27:31 10/22/14 (0)

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