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I can use a GZ32 as a drop in replacement for a 5U4 in my Sun SV-2A3 amp, correct?
Thanks,
David
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Highly unlikely, IMO. GZ32 "=" 5V4. The 5U4 is more tolerant of capacitance than the 5V4 is. The forward drop in a 5U4 exceeds the forward drop in a 5V4. The 5U4G is rated for 225 mA. and the 5U4GB is rated for 250 mA., while the 5V4 is rated for 175 mA. Finally, should B+ be taken from a CT on the 5 VAC winding, rewiring to take B+ from pin 8 of the rectifier socket is required.
What's the problem? NOS 5U4GBs remain affordable and the current production EH 5U4GB has a decent reputation.
Eli D.
No problem - I got a Philips GZ32 and a RCA 5AS4 in a lot of tubes, and I was wanting to try them out.
Shove the RCA 5AS4 in. That should float your boat.
Eli D.
I have a RCA 5AS4A. Is it true that I can use it in place of a 5U4 ?
Edits: 05/08/10
Dave
Its the 5V4 thats like the GZ32.
If the power supply waveform isn't pretty,neither is the sound in most cases.
Yeah - I am aware of that. But, I thought I read somewhere that you could sub a GZ32 or 5AS4 for a 5U4G.
Yes
you can swap those tubes and use a GZ32 or 5AS4 for a 5U4 and even some of the RCA 5U4GB have 5AS4 written on them also. Basically you look at two things when choosing rectifier.
One is,how much filament current does it draw?
Two, does your subbed rectifier have a enough current capability to feed the circuit its being used in?
Three,how much voltage drop does it have for your intended use?
If the power supply waveform isn't pretty,neither is the sound in most cases.
___
Long Live Dr.Gizmo
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