line level impedance, audio frequency, home system lengths? not an issue
PE, PP are great too - lots cheaper
for audio line output with ~<100 Ohms output Z, few 10s ft of 20 pF/ft cable - the fc is in MHz
so for audio any C effects are already < 1/100 of the divider Z at 20 kHz
and DF # are 10^-4 for PE, PP - so DF would be a ppm effect at 20 kHz, less below
PE, PP are great too - lots cheaper
for audio line output with ~<100 Ohms output Z, few 10s ft of 20 pF/ft cable - the fc is in MHz
so for audio any C effects are already < 1/100 of the divider Z at 20 kHz
and DF # are 10^-4 for PE, PP - so DF would be a ppm effect at 20 kHz, less below
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?
80 ohms into whatever cable capacitance you have (calculate it) will form a low pass filter (calculate). The dielectric DF may modify this by effectively adding series resistance to the C (calculate). Put some numbers to it, as jcx did in post 5. Then you can determine whether you think it is likely to be an issue. Without numbers we are all just guessing.
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