[time-nuts] Rb references for audiophiles?

David Forbes dforbes at dakotacom.net
Fri Jul 4 12:49:17 EDT 2008

At 6:49 AM -0700 7/4/08, Jim Lux wrote:
>For your amusement...
>Sitting in a waiting room yesterday, I read an article in a
>very-high-end audio magazine describing a $15K Rubidium frequency
>standard for providing low jitter clocks to your audio system.  It has
>outputs at 44.1, 48, etc. kHz, as well as a 100kHz, which the person
>writing said might become a new standard (huh?)
>A whole magazine, 100 pages long, filled with this sort of thing (and
>yes, they had the special speaker cables with the arrows to indicate
>preferred direction of power flow, too....)


It does sound like a fine way to separate fools from their money, but 
imagine having to listen to your customers spout that nonsense all 
day long!

I remember reading a 1991 audiophile magazine article about clock 
jitter in a CD player. They had separated the transport from the DAC 
and mounted the master timing oscillator in the transport.

Then they spent a lot of money on a fiber link to send the clock to 
the DAC from the transport with low jitter, since the DAC requires 
low jitter and the oscillator was at the end of a cable, which are 
known, along with their transmitting/receiving circuitry, for 
introducing jitter.

Not once did they contemplate putting the oscillator next to the DAC 
where you might say it rightfully belongs.


--David Forbes, Tucson, AZ

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