Impedence question - Klipsh crossover (Off Topic)

by GC, Thursday, May 19, 2005, 15:41 (6909 days ago) @ GC

Hi Jacques,

horn (the tweeter and woofer are stock), should I stick with a 16 ohm
driver?

If the driver you want to replace is 16 ohm then the other driver should be 16 ohm also. You could add an 8 ohm resistor in series with an 8 ohm driver for 16 ohm as result. The filter will then basically see the same impedance and will cross at the frequencies it was designed for.

But, adding a resistor reduces the sensitivity and if there is an impedance correction network present in the standard filter than the expected results will probably be different than wanted.

A driver is also NOT an 8 or 16 ohm resistor, that is only when measuring the driver with DC (as most multimeters do). A driver has a coil and the real resistance on AC (music!) rises with rising frequency and rises on resonances.

Another driver probably has another coil with different Rdc and inductance. So, expect a "mismatch" if you use something else than designed.

The system or filter won't burn or break but a driver with another impedance will shift the crossover frequencies and when the mid-driver receives too much lower frequencies then it can break down when playing too loud.

I hope this clears things up a bit...

Ciao,

Bert

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