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<blockquote data-quote="sundownz" data-source="post: 3073446" data-attributes="member: 549523">Got a preliminary 12v power test:Alrighty... so I abused the infamous Pyramid power supply a bit more today. Same setup I&#039;ve been using for other clamp tests:Pyramid 50 Amp Power Supply8 AWG from supply to batteriesKinetik 2400 BatteryDuralast 1000 CA Battery2 AWG between batteries4 AWG from batteries to ampFluke AC current / voltage meterSears DMMMeasurements:65.8 volts49.2 Amps1.33 ohm calculated rise from 0.6 ohm DCR **3237 Watts14.4 volts rest dropping to 10.75 volts** - Rise was higher than when I tested the 1500D, it was 1.08 ohms for that test. Presumably since my single run of 12 AWG speaker wire is heating up some much due to the extra power. I also did a few test runs at lower volume so the coils were warmer as well.I really need a much more powerful power supply for this test. Pretty well simulates a stock Honda alternator or something, though!I didn&#039;t try to push for more volume on the test HU... I may do that later, but the voltage drop was getting so bad I didn&#039;t want to damage the amp from under-voltage. If I can dig up some more ring terminals I might do it with another battery to see if I can hold at least 11.5 volts.</blockquote>

[QUOTE="sundownz, post: 3073446, member: 549523"] Got a preliminary 12v power test: Alrighty... so I abused the infamous Pyramid power supply a bit more today. Same setup I've been using for other clamp tests: Pyramid 50 Amp Power Supply 8 AWG from supply to batteries Kinetik 2400 Battery Duralast 1000 CA Battery 2 AWG between batteries 4 AWG from batteries to amp Fluke AC current / voltage meter Sears DMM Measurements: 65.8 volts 49.2 Amps 1.33 ohm calculated rise from 0.6 ohm DCR ** 3237 Watts 14.4 volts rest dropping to 10.75 volts ** - Rise was higher than when I tested the 1500D, it was 1.08 ohms for that test. Presumably since my single run of 12 AWG speaker wire is heating up some much due to the extra power. I also did a few test runs at lower volume so the coils were warmer as well. I really need a much more powerful power supply for this test. Pretty well simulates a stock Honda alternator or something, though! I didn't try to push for more volume on the test HU... I may do that later, but the voltage drop was getting so bad I didn't want to damage the amp from under-voltage. If I can dig up some more ring terminals I might do it with another battery to see if I can hold at least 11.5 volts. [/QUOTE]

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