CXD-Q Series

CXD4.3Q

The power amplifier shall be a four-channel network-processing amplifier that is designed to operate exclusively with a QSC Q-Sys system over a Q-LAN Ethernet network. The power amplifier section shall consist of four amplifier channels, fed by digital audio streams over the Q-Sys network, that provide total power of up to 2500 W (continuous) and shall utilize Flexible Amplifier Summing Technology to distribute that power across one, two, three, or all four channels. An independent Input section shall provide inputs to  the Q-Sys system. 

The power amplifier section shall have an input impedance of 10k (balanced or unbalanced) and a maximum input level of 3.88 V (1.2V setting) or 12.28 V (3.9 V setting). The power amplifier shall meet the following performance criteria: typical distortion at 8 Ohms of 0.01 to 0.03%; maximum distortion (4 - 8 Ohms) of 1%; frequency response at 8 Ohms of 20 Hz to 20 kHz (+0.2 db / -0.7 db); noise at -109 db (weighted output muted); gain of 38.4 db (on 1.2V setting); damping factor of greater than 150.

The power amplifier section shall combine a class-D power amplifier with a custom power stage.   The amplifier shall utilize a low-weight, high-efficiency PowerLight universal switchmode power supply for operation at 100 to 240 VAC, 50 or 60 Hz. The power supply shall incorporate Power Factor Correction (PFC). The amplifier shall offer multi-stage sleep modes for AC power savings.

The amplifier shall provide control of Channel Mute and Gain via both front panel buttons and the Q-Sys system, with changes made at either point immediately updated at the other. The amplifier front panel shall also include Input and Output LED Metering, a 400 x 240 TFT color display, navigation buttons, an LED power button/indicator, a fault indicator,  control knob, and cast aluminum handles. 

The amplifier back panel shall provide a dual RJ-45 jack for connection to the Q-LAN network, enabling integration into the Q-Sys system for bi-directional passage of digital audio, control signals, and status monitoring data. The back panel shall also provide four analog audio Mic/Line inputs with phantom power, using 3-pin Phoenix connectors, that are routed to Q-Sys via Q-LAN. The back panel shall also provide four touch-proof Phoenix connectors for connecting loudspeakers to the power amplifier channels. The back panel shall also provide eight GPIO terminals enabling Q-Sys control to/from  external devices.

The amplifier shall be 3.5 in (89 mm) high, 19 in (482 mm) wide, and 16 in (406 mm) deep. The amplifier shall have a net weight of 21 lb (9.5 kg).

The multi-channel system-processing amplifier shall be the QSC CXD4.3Q.