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<blockquote data-quote="shizzzon" data-source="post: 8332035" data-attributes="member: 590338">Transducer= speakerYou can&#039;t use a DMM to &quot;pinpoint RMS&quot; as i said is terrible idea.RMS = i&#039;m assuming you mean wattage.You cannot even get VA without an amperage reading.All a DMM will tell you is what the rail is putting out.. not what the impedance or VA is.You cannot get wattage without phase angle.And yes, you can be a large multitude off by just measuring voltage.However, measuring voltage ALONE can at least tell you whereabouts the limits of the rail is.. BUT ONLY if you knew the impedance being measured(again, you need an ammeter).Now, luckily, if the amplifier comes with a clipping light, at least that&#039;s an active device.No clipping light on this planet is accurate for when measuring music as it&#039;s not designed to measure dynamic material.But, this indicator can give you a &quot;general&quot; idea of where to and not to be at.It&#039;s a lot better than any other method mentioned previously.</blockquote>

[QUOTE="shizzzon, post: 8332035, member: 590338"] Transducer= speaker You can't use a DMM to "pinpoint RMS" as i said is terrible idea. RMS = i'm assuming you mean wattage. You cannot even get VA without an amperage reading. All a DMM will tell you is what the rail is putting out.. not what the impedance or VA is. You cannot get wattage without phase angle. And yes, you can be a large multitude off by just measuring voltage. However, measuring voltage ALONE can at least tell you whereabouts the limits of the rail is.. BUT ONLY if you knew the impedance being measured(again, you need an ammeter). Now, luckily, if the amplifier comes with a clipping light, at least that's an active device. No clipping light on this planet is accurate for when measuring music as it's not designed to measure dynamic material. But, this indicator can give you a "general" idea of where to and not to be at. It's a lot better than any other method mentioned previously. [/QUOTE]

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