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<blockquote data-quote="The_Quiet_One" data-source="post: 8395958" data-attributes="member: 614562">No, it&#039;s not related to the phase of the subwoofer to which you are referring, that just &quot;flips&quot; the signal.The ohms law you used is meant for DC. In AC you have a couple factors that give the end result that at any given point inductance, current, and voltage are not in sync so it can throw off your calculations by a bit (up to 30%-40%). In the case of subwoofers one of the biggies is the inductance. If you were trying to eek out all the power out of your amplifier then it would become an issue. Not to mention the clipping introduced by HU or source that someone cannot see with a DMM. I only mention it so any future readers will know it&#039;s not quite cut and dry as using Ohms law, but again in your scenario and with your previous research and listening habits I seriously doubt using the DMM method will adversely affect your equipment.</blockquote>

[QUOTE="The_Quiet_One, post: 8395958, member: 614562"] No, it's not related to the phase of the subwoofer to which you are referring, that just "flips" the signal. The ohms law you used is meant for DC. In AC you have a couple factors that give the end result that at any given point inductance, current, and voltage are not in sync so it can throw off your calculations by a bit (up to 30%-40%). In the case of subwoofers one of the biggies is the inductance. If you were trying to eek out all the power out of your amplifier then it would become an issue. Not to mention the clipping introduced by HU or source that someone cannot see with a DMM. I only mention it so any future readers will know it's not quite cut and dry as using Ohms law, but again in your scenario and with your previous research and listening habits I seriously doubt using the DMM method will adversely affect your equipment. [/QUOTE]

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