setting gains with a dmm

[Deeper_shades 10+ year member]

i know there is already a few post on here about this, but I couldn't find anything that answered my doubts....about measuring on a bridged amp

I have 2 - d2 ohm subs, wired in series/parallel so resistance is 2 ohms. duhhh

my amp is 3000w, so the math says ( i calculated here Wattage )voltage should be 77.5 volts correct?

maybe this is a stupid question, but my amp (ap30001d) will be rated at 3000 X1 @ 2 ohms Bridged, does bringing make any difference to what the voltage should be?

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