Cable Asylum

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Cable stat query

155.218.171.242

Posted on July 25, 1999 at 06:43:45

Mart

I've noticed that good cables info you of capacitance & resistance & inductance. Since, these filter sound wouldn't it be more informative to tell the layman customer the impedence & tolerance within the normal operating 20Hz - 20kHz frequency band?


       63.3e-6  2
  Mag[Z] @ 20Hz = Sqrt[--------- + R ]
        2
        C


         2 2
 Mag[Z] @ 20kHz = Sqrt[158.e12*L + R ]

How about the bandwidth [from 0.159/(R*C) to 0.159*R/L ]? The interesting bit is curious. Notice how the performance becomes more uniform with increased resistance? Too bad the resistance dulls the drivers by increasing their effective Qes & is loosely indicative of signal retardation which can blur sound.