provided by ltwingtsun from the Hififorum

Rated power measured according to DIN 45500 up to 1% distortion factor in 13,5V

Audio System R105.4

1 × 110 watts, channel 1 at 4 Ohm
2 × 103 watts, channel 1 + 2 at 4 Ohm
4 × 90 watts, channel 1 up to 4 at 4 Ohm
Current consumption 44,2A
efficiency 60,5%

1 × 292 watts, channel 1 + 2 bridged at 4 Ohm
2 × 237 watts, channel 1 + 2 and 3 + 4 bridged at 4 Ohm with 13,4V supply voltage
Current consumption 73A
efficiency 48,5%

474 watts total power