8
INSTALLER TOOLS
• Example: you measure an impedance of 250 ohms (Z) in a 100
volt system. The system power = 100 x 100 / 250 = 10000 /
250 = 40 watts. This speaker or speaker line corresponds to a
40 watts load on a 100 volt power amplifier.
Note:
when measuring 100 volt speaker lines, make sure that
all local 100 volt volume controls have been set at max volume.
Disconnect the speaker line from the amplifier before performing
the measurement. Never attempt to measure the impedance on
live systems! This will result in unreliable measurement results and
eventually irreparable damage to the measuring instrument.
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