[ARC5] Heater voltage split in "command" receivers

[Mike Everette]

Whoopeediddlydoodoo.  Another Audiophool gadget.  I love it!

Phineas T. Barnum was right: "There's a sucker born every minute...."

Wonder if this device enhances the "negative otherness" these guys talk about, concerning tube sound...?

I had a bunch of estate stuff at a hamfest once, including several VT-4C/211 tubes.  Along comes this dude wearing an umbrella-hat (imagine a beanie with an umbrella attached; it was sprinkling just slightly) who did a double take at the tubes.  "I gotta have these to make sweet music, maaaaaaan...."  He asked me what the price was.  I said, as a joke, $100 each.  He didn't even flinch, didn't even ask me if they were good; he pulled out four big ones and left with the tubes.

The SK's family was VERY happy.

One question... wonder where he found an output transformer capable of handling these tubes?  Oh... Hammond, I gues, and probably special ordered....

73

Mike
W4DSE


73

Mike
W4DSE

--- On Fri, 1/25/13, Ian Wilson <ianmwilson73 at gmail.com> wrote:

> From: Ian Wilson <ianmwilson73 at gmail.com>
> Subject: Re: [ARC5] Heater voltage split in "command" receivers
> To: "ARC-5 List" <arc5 at mailman.qth.net>
> Date: Friday, January 25, 2013, 9:49 AM
> Why spend thousands of dollars on
> tubes with matched filament
> strings when the Filament Temperature Levelizer (tm) is
> available?
> 
> The FTL is a robust two-terminal device that is readily
> attached to
> one of a pair of series-filament-string audio tubes. A
> precision
> adjustment device is provided to guarantee accurate balance
> and
> ensures retention of unmuddied highs.
> 
> The FTL is available in trial packs of two for a limited
> period at the
> unrepeatable price of $575 per pack. Limit two per customer.
> An
> enhanced version with gold-plated legs will be available
> later this year.
> 
> 73, ian K3IMW
> 
> 
> On Fri, Jan 25, 2013 at 4:43 AM, Mike Hanz <aaf-radio-1 at aafradio.org>
> wrote:
> 
> > Sounds like a perfect opportunity for those audio guys
> who sell matched
> > pairs...getchur matched filament strings here! 
> More transparent white
> > noise guaranteed!  Hear everything you're missing
> with existing poorly
> > matched filament voltages!  :-)
> >
> > On Jan 25, 2013, at 5:13 AM, Leslie Smith <vk2bcu at operamail.com>
> wrote:
> >
> > > Yes, Ken, I did the same, and made the same
> observation.
> > > The heater resistances are unequal.
> > >
> > >
> > >
> > >  Les
> > >  vk2bcu at operamail.com
> > >
> > >
> > > On Fri, Jan 25, 2013, at 3:21, Kenneth G. Gordon
> wrote:
> > >> On 24 Jan 2013 at 1:17, WA5CAB at cs.com
> wrote:
> > >
> > >> Just to check (and because I am intensely
> curious about most things), I
> >  took
> > >> the time to measure the AC filament voltage at
> each tube socket: in no
> >  case
> > >> whatever was the 24 VAC source evenly-divided
> across any two sets of
> > >> seriesed tubes: it would be 11 volts on one
> tube and 13 volts on its
> >  partner,
> > >> or 11.5 V on one and 12.5 on its partner,
> etc.
> > >>
> > >> I found that interesting, but not particularly
> important.
> > >>
> > >> Ken W7EKB
> > >
> > > --
> > > http://www.fastmail.fm - Or how I learned to stop
> worrying and
> > >             
>             love email again
> > >
> > >
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