So I'm looking at this 5 channel amp that stats it produces 2200 watts of power...here are the specs:
Maximum Power 2200 Watts
CEA Primary Power
(power into 4 ohm, all channels driven, 14.4V supply 1% THD+N) 80 x 4
CEA S/N Ratio (referenced at 1 watt/4 ohm) 80dB, CH 1 - 4
CEA Additional Power
(power into X ohm, all channels driven, 14.4V supply 1% THD+N) 125W x 4 @ 2 ohm, CH 1 - 4
Not sure how 80x4 or 125x4 equals 2200 but they seem to claim it does...? When I compare this to amps with a 500 watt rating they seem to have similar outputs yet claim 500 watts.
What am I missing?
Also, what determines the ohms? Head unit? Speaker capabilities? I checked the specs on my speakers and they seem to be 4 ohms, is there anything else I should know?