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In Reply to: RE: usb to spdif with BNC posted by thom70 on February 14, 2014 at 05:50:34
Make sure you look closely at the BNC to be sure it is really 75 ohms Char. Impedance. Most are not. If there is a plastic bushing inside the metal surround on the center contact, it is a 50 ohm connector.
Edits: 02/14/14Follow Ups:
the Musiland quoted by Thorsten has a 50R BNC!
Hi,
> Yes the Musiland quoted by Thorsten has a 50R BNC!
Precisely.
And it has about 2" worth of appx. 300 Ohm effective impedance wiring connecting it to the PCB, 90 Ohm source impedance before the transformer, incorrect levels and a transformer that is rated only for 7MHz and where no steps have been taken to adjust the circuit to allow wider bandwidth and thus horrible SWR at higher frequencies.
I included that one for several reasons:
1) To illustrate that the presence or absence of BNC connectors is meaningless as an indication of quality of the converter design.
2) To see if anyone was paying a minimal amount of attention.
3) To see if anyone would claim that changing the connectors on this "broken by design" piece of device produced marvellous improvements in sound quality.
Ciao T
Sometimes I'd like to be the water
sometimes shallow, sometimes wild.
Born high in the mountains,
even the seas would be mine.
(Translated from the song "Aus der ferne" by City)
I remember you posting here that you can fix a $100 kit for $700.
There needs to be some consistency in what you preach.
Fred,> I remember you posting here that you can fix a $100 kit for $700.
Really!? Yet what I ACTUALLY posted covered how to fix it for free:
http://www.audioasylum.com/forums/pcaudio/messages/6/66884.html
> There needs to be some consistency in what you preach.
Hmmm, I don't preach anything and I have been consistently saying "BNC or Not - No Matter" for ages.
Ciao T
Sometimes I'd like to be the water
sometimes shallow, sometimes wild.
Born high in the mountains,
even the seas would be mine.
(Translated from the song "Aus der ferne" by City)
Edits: 02/15/14
plus comments on cost of 'fixing' as a sales item.
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