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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: Did you measure the B+ posted by Rob Mercure on July 28, 2006 at 11:37:43:
I'm mostly 'voltage shy' here because I can measure the ~160VDC driver plate voltage easily in these amps (with speakers connected), and measuring the B+ necessitates turning them on and off to avoid any loud "pops". Mostly a convenience issue...But anyways, I checked it out... I measure 432-433VDC with either, given 110VAC input. So, really, no discernible difference whatsoever. This is in contrast to the 5U4G, where I do measure a bit lower and compensate accordingly.
So, I'm now fairly confident that whatever differences I hear are due to the rectifiers' AC harmonic signature, or their response to a dynamic load. I am just surprised that a rectifier could have such a profound effect, especially with a choke input power supply.
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Follow Ups
- Re: Did you measure the B+ -- identical - jon_s 12:12:48 07/28/06 (2)
- Re: Did you measure the B+ -- identical - Rob Mercure 12:23:59 07/28/06 (1)
- Re: Did you measure the B+ -- identical - jon_s 13:52:14 07/28/06 (0)
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