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Joined: Sep 2005
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Joined: Sep 2005
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Impedance Meter = Rather then the DC resistance they use a 1K tone to read the impedance which will give you the wattage requirement for the speaker load.
The quick test for an 25/70v amp is apply tone to input and voltmeter on output. At full power you should have 25/70 volt out. When a load that does not exceed amp wattage is connected the output should stay close to unloaded voltage. A incandescent light bulb makes a good load just use ohms law to figure the wattage.
Example a 120v/150w bulb is about a 50 watt load @ 70v
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