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#1039285 - 07/18/05 05:28 PM Wire Length Question
paully
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Registered: 05/25/04
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Loc: Northern New Jersey

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Assuming quality coax wire and clean connectors, what is the maximum run-length for unbalanced digital (S/PDIF) wires, or the maximum length others have gotten away with? I can't seem to find a definative answer anywhere. Anyone?

Thanks, Paul \:\)
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#1039286 - 07/19/05 02:18 PM Re: Wire Length Question
AudioMaverick
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Assuming the 50 Ohm rating is per 1,000 feet... 100 feet would introduce a 5 Ohm load. But, capacitance usually causes singal degradation or distortion. My guess is 50 feet is tops without assistance.

Gefen has some neat balin extender items. Check out this...
Gefen Digital Audio Extender - $149
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#1039287 - 07/19/05 02:37 PM Re: Wire Length Question
Bill@Welcome Home Studios
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Before anyone can give you a useful answer, you need to be more specific. You want to go 30 feet? 300 feet? 3,000 feet? what is the situation?

Bill
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#1039288 - 07/19/05 03:14 PM Re: Wire Length Question
paully
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Quote:
Originally posted by bpark@prorec.com:
Before anyone can give you a useful answer, you need to be more specific. You want to go 30 feet? 300 feet? 3,000 feet? what is the situation?

Bill
>>>>>>>>>>>>>

Thanks for the quick get-back and the info. I've set up unbalanced(RCA) digital ins/outs, through patch bays, from different modules. The longest total run is about 25'. No problems yet, but for-warned is.. well you know. I've run into wire length problems with FireWire connections before, and thought I'd ask about digital. Paul
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WUDAYAKNOW.. For the first time in my life, I'm wrong again!!

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#1039289 - 07/21/05 12:32 PM Re: Wire Length Question
philbo_Tangent
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Registered: 10/08/00
Posts: 1175
Loc: Iowa

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Quote:
Originally posted by AudioMaverick:
Assuming the 50 Ohm rating is per 1,000 feet... 100 feet would introduce a 5 Ohm load. But, capacitance usually causes singal degradation or distortion. My guess is 50 feet is tops without assistance.

Gefen has some neat balin extender items. Check out this...
Gefen Digital Audio Extender - $149
Uh, I might be wrong here, but I thought SP/DIF uses 75 Ohm impedance cable.
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Phil
Tangent Studios
http://artists.iuma.com/IUMA/Bands/Tangent2/

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