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<blockquote data-quote="keep_hope_alive" data-source="post: 6877551" data-attributes="member: 576029"><p>there will be maybe 100-200W difference in efficiency comparing the HCCA class A/B vs. a newer Class D - 50% vs 80% (approximately). but there is a lot more to it than that, as efficiency varies with impedance load and output.</p><p></p><p>if you find that you're wanting more output at 4 ohms, you can look at an Alpine MRP-M1000 which makes a CEA rated 600W RMS at 4 ohms</p><p></p><p><a href="http://www.crutchfield.com/p_500MRP1000/Alpine-MRP-M1000.html?c=3&amp;tp=35834&amp;avf=N" target="_blank">Alpine MRP-M1000 Mono subwoofer amplifier 1,000 watts RMS x 1 at 2 ohms at Crutchfield.com</a></p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 6877551, member: 576029"] there will be maybe 100-200W difference in efficiency comparing the HCCA class A/B vs. a newer Class D - 50% vs 80% (approximately). but there is a lot more to it than that, as efficiency varies with impedance load and output. if you find that you're wanting more output at 4 ohms, you can look at an Alpine MRP-M1000 which makes a CEA rated 600W RMS at 4 ohms [URL="http://www.crutchfield.com/p_500MRP1000/Alpine-MRP-M1000.html?c=3&tp=35834&avf=N"]Alpine MRP-M1000 Mono subwoofer amplifier 1,000 watts RMS x 1 at 2 ohms at Crutchfield.com[/URL] [/QUOTE]
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