Processing Amplifier


  • Seamless Q-SYS integration with audio transport and control via standard Gigabit Ethernet protocols and hardware
  • Capable of providing up to 5,000 watts continuous and 8,000 watts peak with 70V or 100V direct drive available on each output of the CXD4.3Q and CXD4.5Q, and on bridged output pairs of the CXD4.2Q
  • Flexible Amplifier Summing Technology™ (FAST) permits total amplifier power to be distributed across one, two, three or all four channels
  • PowerLight universal switch mode power supply with PFC for highest efficiency, improved audio performance, and low weight
  • Mic/Line input Euroblock connectors and touch-proof Euroblock loudspeaker connections
  • Eight bi-directional GPIO connections that can be used for analog or digital inputs or outputs to/from Q-SYS
  • Built-in energy saving modes ensure that the amplifier will draw the minimum amount of AC power while still providing outstanding audio quality
  • Q-SYS technical support is available 24/7 - worldwide

General Specifications

  CXD4.2Q CXD4.3Q CXD4.5Q
Typical distortion  0.01 – 0.06%
Maximum distortion 1.00%
Frequency response 20 Hz–15 kHz ±0.2 dB
20 Hz–20 kHz +0.2/-0.7 dB

-101 dB
-109 dB
Gain (1.2V setting) 34.0 dB 38.4 dB 38.4 dB
Damping factor >150
Input impedance >10k ohm, balanced or unbalanced
Maximum rms input level
(3.9V setting)
(1.2V setting)

12.28 V (+24 dBu)
3.88 V (+14 dBu)
Amplifier and load protection Short circuit, open circuit, thermal, RF protection. on/off muting, DC fault shutdown, active inrush limiting, input current limiting
AC power input 4.2: Universal Power Supply 100-132/200–240 VAC, 50–60 Hz
4.3/4.5: Universal Power Supply 100–240 VAC, 50–60 Hz
Agency approvals UL, CE, RoHS/WEEE compliant, FCC Class A (conducted and radiated emissions)
Carton contents Locking IEC cable, Quick Start Guide, USB cable

Controls, Indicators and Connections

  CXD4.2Q CXD4.3Q CXD4.5Q
Controls and indicators (front) Power• Channel MUTE Buttons • Channel SELECT buttons • Channel input signal and CLIP LED indicators • Channel output and LIMIT LED meters • HOME, ENTER, EXIT, GAIN navigation buttons • Control knob
Controls and indicators (rear) AC power disconnect

Rear panel connectors Input: Four 3-pin Euroblock
Output: Four 2-pin Euroblock Speaker
Link/IO/Network: USB Type B; eight GPIO; NC & NO relay; two RJ45 (LAN A & LAN B)

Weights and Dimensions

  CXD4.2Q CXD4.3Q CXD4.5Q
Dimensions (HWD) inches 3.5 × 19 × 12 3.5 × 19 × 16 3.5 × 19 × 16
Dimensions (HWD) mm 89 x 482 × 305 89 × 482 × 406 89 × 482 × 406
Weight Net 18.5 lb / 8.39 kg 21 lb / 9.53 kg 22 lb / 9.98 kg
Weight Shipping 22 lb / 10.0 kg 25 lb / 11.3 kg 26 lb / 11.8 kg

All specifications are subject to change without notice.