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Setting amp gains with multimeter
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<blockquote data-quote="Stingerssx" data-source="post: 8706772" data-attributes="member: 659199"><p>Hello all,</p><p></p><p>I have never been able to set up amp gains with a multimeter.</p><p>I've tried many different times, with many different systems, and many different multimeters.</p><p></p><p>Each time, I can't get above 7 volts. And then sometimes the meter will go into OL (overload).</p><p></p><p>I'm not sure what I'm doing wrong.</p><p></p><p>I've followed a bunch of different articles and tutorials and they all say the same thing. </p><p>Square root of RMS watts X Ohms.</p><p></p><p>Earlier today, I went out and tired it again.</p><p>I'm using the Rockford Prime 1200.1D and a 2 Ohm load.</p><p>800watts X 2 = 1600</p><p>the square root of that is 40.</p><p></p><p>Using a Fluke 88, I've checked the range settings and set for AC volts and in Auto, 300v and 40v I can't get above 7 or so with the gain full up.</p><p> So let's pretend that the meter is off by a factor of 10. If I set it at 4 volts, it's like only 1/4 the way up. </p><p>This happens every time I try this. </p><p>And with every amp, this leaves the gains at only 1/4 way up.</p><p></p><p>Anybody got any sugestions?</p><p></p><p></p><p></p><p>thanks!</p></blockquote><p></p>
[QUOTE="Stingerssx, post: 8706772, member: 659199"] Hello all, I have never been able to set up amp gains with a multimeter. I've tried many different times, with many different systems, and many different multimeters. Each time, I can't get above 7 volts. And then sometimes the meter will go into OL (overload). I'm not sure what I'm doing wrong. I've followed a bunch of different articles and tutorials and they all say the same thing. Square root of RMS watts X Ohms. Earlier today, I went out and tired it again. I'm using the Rockford Prime 1200.1D and a 2 Ohm load. 800watts X 2 = 1600 the square root of that is 40. Using a Fluke 88, I've checked the range settings and set for AC volts and in Auto, 300v and 40v I can't get above 7 or so with the gain full up. So let's pretend that the meter is off by a factor of 10. If I set it at 4 volts, it's like only 1/4 the way up. This happens every time I try this. And with every amp, this leaves the gains at only 1/4 way up. Anybody got any sugestions? thanks! [/QUOTE]
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Setting amp gains with multimeter
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