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RE: Digital coax cable length

Posted by AbeCollins (A) on July 19, 2017 at 19:59:42

In Reply to: RE: Digital coax cable length posted by Peter C on July 19, 2017 at 17:44:01:

You're faced with an impedance mismatch anyway if your source & DAC have RCA jacks on them. RCA jacks and plugs were never designed to accommodate 75-ohm coaxial cabling and maintain constant impedance.

I'm not suggesting that you use RG59 coax but....

RG59 (and RG6) coax are 75-ohm. F connectors are also 75-ohm. These are typically used for Cable TV hook-ups. My RG59 cable came with crimped F connectors on each end. I used type F to RCA adapters on each end for my CD changer and DAC. Technically not ideal, practically it works fine and sounds fine.

However, if you need only .5 - 1.5m or so I would just buy an audiophile brand digital cable with RCAs attached rather than dealing with adapters. If you feel better about buying 1.5m, go for it. It won't make a practical difference but since when are audiophiles practical? ;-)

My reason for using RG59 is that it is 75-ohm, it is cheap, I needed a longer length, I already had several lengths of it on-hand. I just needed a couple adapters.

Type F to RCA Adapters

Edits: 07/19/17 07/19/17

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