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Old 05-13-2008   #29
CharlyD
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Join Date: Sep 2007
Location: Seattle
Posts: 47
Default Re: Pairing Amps with Speakers

Sorry, I was trying to simplify things and went a bit too far. Speaker sensitivity is measured with a standard voltage (not power) input. The voltage used is 2.83VRMS which would equate to 1 Watt at if the speaker was 8 Ohms (P = (V^2)/R). I only looked at the JBL spec page for these speakers which lists their impedance at 8 ohms. Since the JBLs are actually closer to 4 ohms, the power input would be closer to 2 watts at that voltage. Make sure the amplifier you're considering will drive 4 ohms and don't cut corners on power. The amp will still have to drive considerable current through these speakers.
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