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post #11 of 12
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Quote:
Originally Posted by FearSC549 View Post
Do you actually think they run at those wattage? This is a set of Logitech computer speakers. Think again.
how could i find out what the amp is actually doing , short of a multimeter... i have oner around here some place... Reason i ask is i have 4 Boston Acoustics SR60, 6.5" car speakers, 85 watt RMS later to replace the Logitech. how could i test the amp once i did find the multimeter. Turn the volume all the way up and run audio to it while having the speaker wire attached to the leads of the multimeter?
 
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post #12 of 12
Quote:
Originally Posted by Tempest_Inc View Post
how could i find out what the amp is actually doing , short of a multimeter... i have oner around here some place... Reason i ask is i have 4 Boston Acoustics SR60, 6.5" car speakers, 85 watt RMS later to replace the Logitech. how could i test the amp once i did find the multimeter. Turn the volume all the way up and run audio to it while having the speaker wire attached to the leads of the multimeter?
Amplifiers must be properly loaded. That is to say that the output must be within spec for an impedance match, usually between 4 and 16 ohms. Furthermore, a simple multimeter is not sufficient to handle the dynamic changes in speaker impedance over a range of frequencies so for testing purposes a fixed load resistor is used. That's why proper specifications for power output (instead of sales stats) are listed at more than one impedance and over a range of frequencies and qualified but how much deviation form average there is. Also, peak power is almost useless. RMS is where it's at.

Example of dully qualified spec:

200 watts rms @ 8 Ohms, + or - 1.25db, 25Hz-19KHz
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