-- If the 3 Amp is being drawn from a battery,
then the battery is supplying
3 x (Voltage of the battery) watts.
-- If the 3 Amp is flowing through a resistor,
then the resistor is dissipating
9 x (Resistance of the resistor) watts.
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That depends on the power ratings of the subs.
1 watt = 1 amp * 1 volt So.... In a house: 5 amps * 115 volts = 575 watts In a car: 5 amps * 12 volts = 60 watts
Yes. The "275W" is the maximum power that the speaker can handle at its input. The "120W" is the maximum undistorted power that the amp can deliver in the loud spots with the volume wide open. So the amplifier will never overdrive the speaker. The impedances of the speaker and amp-output should match. If one of them is marked "4 ohms", then they both should be. If they're not the same, then . . . -- the speaker may not sound as 'crisp' as it should. -- the amplifier may not deliver as much undistorted power as it should. -- the amplifier may not run as cool as it should. -- with an extreme mismatch and extended loud spots played at high volume, the amplifier may even be damaged.
Yes you can depending on the wattage of the amp. i personally would only put two 12's on one amp. cause it will still bump hard!!(:
"milli" means a thousandth in the metric units of measurement. Thus 1000 milliamps = 1 amp.