On 10/1/2018 5:44 PM, mcp6453 wrote:
How effective is the conductive PVC shield? I assume it's crap, but can
it be quantified? Is it 50% as effective as a foil or 100% braid shield?
30%?
It's just fine. The percentage that you sometimes see related to a
shield has to do with how tight the braid weave is, but since there's no
braid in this type of cable, there's no number.
If the microphone output is balanced and it's going to an amplifier with
a differential (most say "balanced") input, nearly all of the hum
rejection is done by the balanced connection. The shield helps with high
frequency noise.
Bonus question: What's your favorite bulk XLR mic cable (other than star quad types?)
Star quad is kind of a special purpose cable - good to use when you know
you're going to have an EMI problem, but otherwise better to use
something else that has lower capacitance. Belden 1800F makes good mic
cable, and it also has a characteristic impedance of 110 ohms, so it's
designed to work with AES3 digital audio connections when you want to do
it right.
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