MOTM

Stay away from foil shield in "moving" applications. It's EXCELLENT for
permanent or semi-permanent installations, but if you use it for MOTM
patching, you will break down the foil and it will be a POS cable after a
while.

Tony


> -----Original Message-----
> From: markus [mailto:djarum11@...]
> Sent: Friday, July 13, 2001 11:39 AM
> To: motm@yahoogroups.com
> Subject: [motm] cable specs
>
>
> i'm comparing samples of belden cable for
> MOTM patch cables and for general line-level studio
> wiring.
>
> so far i like the thinner style (very similar to the
> gray belden wire paul uses for audio signals inside
> the modules: light, flexible, small) and the specs
> (tinned copper, capacitance is only 12pF/foot,
> impedance is 110 ohms) of belden 1800B. however the
> AWG is only 24 in this twisted pair, foil shield with
> drain wire type of cable. is 24 AWG too thin for
> modular patch cables?  how about for longer runs
> within the studio? is a foil shield OK or is a braid
> really necessary (yes there are computers in the
> studio) ?
>
> other cables i am considering are the belden 1696A
> (too thick and inflexible for patch cables IMO but may
> be good for the rest of the studio): 22 AWG, tinned
> copper, twisted pair, foil shield AND braid shield,
> drain wire, heavy duty PVC jacket, capacitance
> 13pF/foot
>
> and belden 83393, similar to above with a capacitance
> of 22pF per foot, 20 AWG, no extra braided shield, and
> a thick rubbery silicone jacket.
>
> prior to this i was making line-level cables with
> canare starquad, which is a mic cable and has far too
> high a capacitance to be used for line level signals.
> try using this stuff as a guitar cord, for example,
> and it acts as a LPF - your high end goes out the
> window. (around 60 pF/foot)
>
> /technical spew off
> mark
>
>
>
>
>
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