true 75 ohm cable is a snap with BNC terminations.
Key point. Indeed it is better than most of RCA connectors in this regard. I guess the reason is simply because the entire commercial market is RCA dominated.
Why aren’t BNC jacks common?
Digital connection between a source component and DAC calls for typically other a 75 ohm impedance or 110 ohm impedance cable. Sourcing a 110 ohm cable is easy- it’s very common. But a 75 ohm cable? Not so much primarily because just about every RCA terminated cable is not a 75 ohm cable, however, true 75 ohm cable is a snap with BNC terminations. BNC is not expensive and arguably it’s a more secure connection than is RCA. I therefore do not understand why components with BNC jacks are very rare. Perhaps you can argue the ommission of a BNC connection is justified on mass market gear but on high end gear? Can someone provide an explanation that makes at least some sense? My DAC supports BNC (Bricasti) but my CD transport (Simaudio) does not. Thanks!!
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BNC is widely used in industry for electronics cables for its secure connection. It is a better connector than RCA. The lack of familiarity in audio systems has hampered more wide acceptance. There are adaptors for both BNC -> RCA and RCA -> BNC. They are cheap and effective. I use them every time I want to look at line level audio signals on an oscilloscope or use any HP test gear. |
@mitch2 it is a 2 foot punt, making it all the more inexplicable. I do t know how a high end company can in good faith offer a 75 ohm point of connection and not use BNC. |
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