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Old 13th September 2004, 12:49 AM   #11
BrianL is offline BrianL  United States
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When I first noticed that various high-end manufactures
uses Aromat/NAIS, I was quite surprised. I have had mucho
quality problems with them in (non-audio) instrumentation
applications. If you want to use an Aromat/NAIS relay, I'd
suggest the SX series (p/n's are ASX....). Just watch the
maximum current rating.
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Old 13th September 2004, 04:46 PM   #12
Berki is offline Berki  Austria
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Hello!

Thx for you input. I am confused, some recommend teh NAIS DS Relay, someone the SX Relay, an other one a Takamisawa relay and some one recommend a bistabile Siemensrelay, so what is the best and why?

Please help me!

Thx very much
Daniel
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Old 13th September 2004, 05:55 PM   #13
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I suspect the bistabile relay is superior for those following the philosphie magnetic flux does harm the signals sonic quality. However, in this case we better should´nt transmit the signal electronically.

Else, read the datasheets behind the links above.
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Old 13th September 2004, 07:32 PM   #14
Berki is offline Berki  Austria
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Hi,

so what are the most important paramters for audio quality? When this parameters are good, does this always ensure very good sound, or is there an other factor to take care of?

Thanks
Daniel
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Old 13th September 2004, 08:16 PM   #15
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One of the most important parameter is "minimum current" and "minimum voltage" for the contacts. SDS/NAIS had extremely low values of those parameters but I would say that any good signal relay will do a good job. AVOID power relays, over 2 A current.
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Old 13th September 2004, 08:23 PM   #16
Electrons are yellow and more is better!
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Quote:
Originally posted by till
I suspect the bistabile relay is superior for those following the philosphie magnetic flux does harm the signals sonic quality. However, in this case we better should´nt transmit the signal electronically.

Else, read the datasheets behind the links above.
Bistable relays have permanent magnets inside. What is the differens between a permanent magnet and an elctro magnet?
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Old 13th September 2004, 08:25 PM   #17
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don´t know, ask those voodoo- audiophiles. they might kow the sonic difference between different kinds of magnetic field...

i can´t see any advantage in bistabile relays.
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Old 14th September 2004, 06:40 PM   #18
Berki is offline Berki  Austria
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Hi,

what about reed-relays, nobody said something about them, are the better, why / why not? Do you know a good reed relay?

Thanks
Daniel
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Old 17th September 2004, 06:40 PM   #19
Berki is offline Berki  Austria
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Nobody?

Thanks
Daniel
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Old 18th September 2004, 02:23 AM   #20
BrianL is offline BrianL  United States
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OK, you want a reed relay recommendation. Mine is
Coto (www.cotorelay.com , I believe). I've use a number
of different types in precision instrumentation application
(DC as well as high dynamic range 100kHz AC). Very
good. If you want to get really fancy, look at mercury-
wetted reeds. Coto and most others are sensitive to
physical orientation (the Hg needs to stay in the proper
place), though Pickering (not my favorite relay vendor)
has a mercury-wetted low thermal EMF reed that claims
not to be sensitive to orientation.

Given my poor results with some Aromats in the past
few years, I'm avoiding them for all my work-related
applications. However, for DIY audio projects where
you could "buzz" them for a while and then verify goodness,
I'd consider an Aromat SX series.

Note that the SX series comes in normal as well as latching
(aka "bistable") configurations. You can get them
from Digi-Key.
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