CA series is a traditional product with 550W in 2U height structure, which is made by SAE after the mature product of MA series. It has centuries-old history, widely used and the best sales. It has been highly appraised by customers. Products faced to all-around multifunctional application markets. The power range is from 250W to 1350W, totally 6 models. If you have higher requirement than L series, please choose CA series. Specification Stereo Mode(both channels driver) CA4 CA6 CA9 CA12 CA18 CA20 8 ohm power * 250W 450W 580W 850W 1150W 1350W 4 ohm power* 450W 750W 950W 1275W 1725W 2050W 2 ohm power** 650W 1100W 1300W 1700W 2300W 2700W Bridge Mono Mode 8 ohm power * 900W 1550W 1900W 2550W 3450W 4050W 4 ohm power** 1350W 2200W 2800W 3400W 4600W 5400W Other specifications S/N Rate A Weight >103dBA >103dBA >103dBA >105dBA >105dBA >105dBA Input Sensitivity 0.775v/1v/1.4v Output Circuitry AB AB AB 3H 3H 3H THD+N (8 ohm 1kHz In 1/4 Outpower) <0.05% <0.05% <0.05% <0.10% <0.11% <0.11% Damping Factor (8 Ohm 1k) >150 >150 >180 >250 >300 >300 Slew Rate 15v/us 15v/us 15v/us 15v/us 15v/us 15v/us Input Impedance(bal/unbal) 20k ohm/10k ohm Voltage Gain at 8 ohm 30dB 33dB 35dB 37dB 38dB 41dB Cooling rear to front air flow Connectors&Protection Input Connectors 3-pin XLR-F/Link 3-pin XLR-M Output Connectors Binding posts Binding posts&Speakon Amplifier Protection DC/Short circuit/TEMP/Clip limit DC/Short circuit/TEMP/Clip limit/VHF/Softstar Dimensions&weight Width 48.3cm 48.3cm 48.3cm 48.3cm 48.3cm 48.3cm Depth(Handles to rear) 49.6cm 49.6cm 49.6cm 49.6cm 49.6cm 49.6cm Height 3U 3U 3U 3U 3U 3U Weight(Gross) 22.5kg 26.2kg 27.9kg 36.5kg 39.5kg 41.0kg