Results of a very quick test... - SSL Tech - Pro Audio Asylum

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Results of a very quick test...

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In Reply to: Re: I'm Not posted by Roland on April 2, 2002 at 07:04:57:

So here's how I have the Neutrik A2 set up:
Generator impedance = 200 ohms, (No 150 ohm setting unfortunately)
Generator frequency = 40kHz (as high as it goes for this set!)
Measurement input impedance = 600 ohms
A quick try of a handful of standard values available to me right this minute gives a 2.4dB drop a 40kHz when I strap 27nF across the line. 27nF = 27,000pf which at 150pF per metre, is equivalent to 180 metres.
-At 150 ohms source impedance, the drop off would be lower still, so it definately seems to disagree with getting a -3dB point at 16,xxxHz with only 100 metres of cable...
As for personal use, there are a number of factors governing this kind of stuff. I have always used starquad-type cable for individual mic runs in noisy environments, -Bundling cables produces a de facto improvement in shielding, but sometimes it all gets a bit to big, so a good multipair snake is a better choice as soon as outside dimension becomes a limiting factor.
On the subject of digital cable, -I have a few hundred metres of it (Clark Wire & Cable part # 801 and Gotham GAC-2) here and I've been forced to use it in a pinch for analog connections... -it's about as microphonic as anything I've ever tried. -Now I realise that other people might make a decent 110-ohm digital cable which is softer than this stuff, and may well be a little less ill-suited, but trust me... you wouldn't want to use this for analog connections -ANYWHERE!!!
-If anyone has any other types of 110-ohm cable, I'd be interested to know if they can hear anything when they flick the cable with their fingernail...
Technically yours,
Keith

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Follow Ups Full Thread

Topic - making a cable snake - brain echo 20:10:56 03/23/02 (15)

Re: making a cable snake - brain echo 14:03:33 04/05/02 (0)

Re: making a cable snake - SSL Tech 12:21:47 04/02/02 (0)

Re: making a cable snake - Roland 14:42:52 03/24/02 (12)

Re: making a cable snake - Haldor 16:31:35 03/26/02 (11)

Re: making a cable snake - Roland 14:54:13 03/27/02 (10)

Re: making a cable snake - Haldor 19:35:52 03/28/02 (9)

Re: making a cable snake - Roland 07:13:33 03/29/02 (8)

I'm with Roland - NYCProAudioNut 09:50:57 03/29/02 (7)

Re: I'm Not - Haldor 15:22:45 04/01/02 (6)

Re: I'm Not - Roland 07:04:57 04/02/02 (5)

Re: I'm Not - Haldor 15:02:05 04/02/02 (2)

Re: I'm Not - SSL Tech 09:02:27 04/03/02 (1)

Re: I'm Not - Roland 14:40:20 04/03/02 (0)

Results of a very quick test... - SSL Tech 13:08:50 04/02/02 (1)

Re: Results of a very quick test... - SSL tech 13:35:28 04/02/02 (0)

Follow Ups

Results of a very quick test... - SSL Tech 13:08:50 04/02/02 (1)

Re: Results of a very quick test... - SSL tech 13:35:28 04/02/02 (0)

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