Hartke HyDrive HX112, Ower'S Manual

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ENGLISH
4
About Impedance
About Impedance
Before you hook up your speaker cabinet, be sure that you understand a little about
impedance. Impedance is the electronic load (resistance) that the speaker puts on the
power amplifier and is measured in Ohms (Ω). Too much of a load (indicated by lower
impedance number) can damage your amplifier, while too small a load (indicated by
higher impedance number) will not draw enough power from your amplifier.
Here is the tricky, yet simple rule of impedance: When two speakers with the same
impedance are wired in “Parallel”, the total system impedance is cut in half, and when
two speakers with the same impedance are wired in “Series”, the total impedance is
the sum of the speakers individual impedance.
The HX112 has an innovative dual voice coil design
that allows you to choose between 4 or 8 ohms
impedance. The cabinet has a impedance selector
switch on the rear jack plate. So, if your amplifier
has a minimum impedance of 4-ohms and space on
the stage is tight, set the HX112 impedance selector
switch to 4-ohms to get the full power of your amp. If you want to use two HX112
together in parallel, for a total impedance of 4 Ohms, or add an HX112 to your current
setup, set the impedance selector switch to 8-ohms.