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Amplifiers
4 ohms, 1,000+
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<blockquote data-quote="dB-r" data-source="post: 2823168" data-attributes="member: 574699"><p>No. The load doesn't mean less draw. Example:</p><p></p><p>1000 watts @ 4 ohms and 14.4volts, Class AB amp, 60% efficiency = 97.1 amps</p><p></p><p>1000 watts @ 4 ohms and 14.4volts, Class D amp, 90% efficiency = 76.34 amps</p><p></p><p>1000 watts @ 1 ohms and 14.4volts, Class AB amp, 60% efficiency = 97.1 amps</p><p></p><p>1000 watts @ 1 ohms and 14.4volts, Class D amp, 90% efficiency = 76.34 amps</p><p></p><p>Ohms law.... Voltage x Current = Power in Watts 1000 watts is 1000 watts, no matter the ohms, (or impedance of the load) The class of operation or more specifically, the efficiency of the amplifier will dictate the current draw.</p><p></p><p>That is why people are telling you you will need a Class AB bridged and that you better have a beefy electrical system.</p></blockquote><p></p>
[QUOTE="dB-r, post: 2823168, member: 574699"] No. The load doesn't mean less draw. Example: 1000 watts @ 4 ohms and 14.4volts, Class AB amp, 60% efficiency = 97.1 amps 1000 watts @ 4 ohms and 14.4volts, Class D amp, 90% efficiency = 76.34 amps 1000 watts @ 1 ohms and 14.4volts, Class AB amp, 60% efficiency = 97.1 amps 1000 watts @ 1 ohms and 14.4volts, Class D amp, 90% efficiency = 76.34 amps Ohms law.... Voltage x Current = Power in Watts 1000 watts is 1000 watts, no matter the ohms, (or impedance of the load) The class of operation or more specifically, the efficiency of the amplifier will dictate the current draw. That is why people are telling you you will need a Class AB bridged and that you better have a beefy electrical system. [/QUOTE]
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