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How is it legal for amp manufacturers to lie?
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<blockquote data-quote="dragon.breath" data-source="post: 8617185" data-attributes="member: 582656"><p>They can get away with it because their is no standardized rating method. You can get huge wattage numbers out of a cheap amplifier using something like the PMPO method. That basically is spiking the amp by putting as much battery voltage as possible (like 24 volts ), wiring the speaker outputs at as low a ohm as possible and playing a square wave. Then measuring the spike of power from the amplifier in the split second before the amplifier either dies or the protection circuits shut it down.</p><p></p><p>I remember several years ago, a car audio magazine tested a 1000 watt rms Rockford amplifier using PMPO too make a point. It made 27,000 Watts.</p></blockquote><p></p>
[QUOTE="dragon.breath, post: 8617185, member: 582656"] They can get away with it because their is no standardized rating method. You can get huge wattage numbers out of a cheap amplifier using something like the PMPO method. That basically is spiking the amp by putting as much battery voltage as possible (like 24 volts ), wiring the speaker outputs at as low a ohm as possible and playing a square wave. Then measuring the spike of power from the amplifier in the split second before the amplifier either dies or the protection circuits shut it down. I remember several years ago, a car audio magazine tested a 1000 watt rms Rockford amplifier using PMPO too make a point. It made 27,000 Watts. [/QUOTE]
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How is it legal for amp manufacturers to lie?
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