CX-Q 2K4
QSC · Amplifiers
Where passive ceiling speakers are already installed, or specified by the consultant. Two thousand watts allocated across four channels as the room needs it.
Not every room gets new loudspeakers. Where passive speakers are already installed, or the design calls for them, this drives four channels with power allocated flexibly rather than fixed per output.
Why we recommend it
Flexible power allocation
2000 W total across four channels, assigned where the room needs it instead of split evenly.
Any distribution
Low impedance, 70 V or 100 V direct drive on every channel.
Native to QSC
Transport, control and monitoring over Q-LAN, on the same dashboard as the rest of the room.
When you do not need it
If the room uses NL Series PoE loudspeakers, there is no amplifier in the design at all.
Specifications
| Channels | 4 |
|---|---|
| Total power | 2000 W |
| Output modes | Low-Z, 70 V or 100 V direct drive on all channels |
| Max power per channel, 8 Ω | 700 W |
| Max power per channel, 4 Ω | 800 W |
| Max power per channel, 2 Ω | 600 W |
| Max power per channel, 16 Ω | 350 W |
| Max power per channel, 70 V | 700 W |
| Max power per channel, 100 V | 700 W |
| Power rating method | 20 ms 1 kHz burst, single channel driven |
| Channel flexibility | FlexAmp asymmetric allocation; bridge or parallel to 200 Vrms or 35 A |
| Frequency response (8 Ω) | 20 Hz - 20 kHz, +0.2 / -0.7 dB |
| Typical distortion | 0.02 - 0.05% at 8 Ω; 0.04 - 0.1% at 4 Ω |
| Noise, output muted (weighted) | Better than 106 dB |
| Noise, output unmuted (unweighted) | Better than 102 dB |
| Gain (1.2 V setting) | 33 dB |
| Damping factor | Greater than 100 |
| Mic/line inputs | 4, with +12 V phantom power |
| Input impedance | Over 8 kΩ balanced, over 4 kΩ unbalanced |
| GPIO | 8 bi-directional |
| Network | Q-LAN native transport, control and monitoring |
| Input connectors | 3-pin Euro and Q-LAN |
| Output connectors | 8-pin Euro, touch-proof |
| Protection | Short, open, over-current, over-voltage, thermal, RF, DC fault, inrush limiting |
| AC power | 100 - 240 VAC, 50 - 60 Hz, active PFC |
| Rack space | 2 RU |
| Dimensions (H x W x D) | 3.5 x 19 x 16 in (89 x 482 x 406 mm) |
| Weight, net / shipping | 23 lb (10.4 kg) / 27 lb (12.2 kg) |
| Agency approvals | UL, CE, RoHS/WEEE, FCC Class B |
| In the box | Locking IEC cord, Euro connectors, quick start guide |
Specifications per QSC published product pages. Confirmed on quote.
What it works with
For checking fit before you specify. Every figure below is taken from the published specification of the product named.
First decide whether the room needs an amplifier at all
This drives passive loudspeakers. The Q-SYS NL Series does not need it: an NL-C4 ceiling loudspeaker and an NL-P4 pendant each take one Cat5e run and carry their own amplification over PoE — the NL-P4 is rated 12 W on PoE and 24 W on PoE+, the PoE+ case adding 3 dB of maximum SPL. Where passive speakers are already in the ceiling, or the consultant has specified them, this amplifier is back in the design. Where the fit-out is open-ceiling or exposed-services, the NL-P4 is the published answer and there is no amplifier in the room.
2000 W is the total, not the per-channel figure
The four channels share 2000 W under FlexAmp, allocated asymmetrically rather than split evenly. The published per-channel maxima are 700 W at 8 Ω, 800 W at 4 Ω, 600 W at 2 Ω and 350 W at 16 Ω, rated on a 20 ms 1 kHz burst with a single channel driven — a burst rating, not a continuous one. Dividing 2000 by four produces a number that appears nowhere in the specification.
It needs a QSC Core behind it
Q-LAN is the native transport for audio, control and monitoring, so a Core runs the design. Core Nano is the all-networked Core — 64 x 64 Q-LAN, and no analog I/O on board. Core 8 Flex publishes 8 analog Flex channels and 8 x 8 GPIO in its place. Both carry up to 32 network peripherals, and this amplifier is one of them. Worth reading against that choice: the amplifier itself publishes 4 mic/line inputs with +12 V phantom power and 8 bi-directional GPIO.
Distribution, and the connectors it lands on
The published output modes — low impedance, 70 V and 100 V direct drive — are listed for all four channels, not a subset. Channels bridge or parallel to 200 Vrms or 35 A. Inputs are 3-pin Euro and Q-LAN; outputs are 8-pin Euro, touch-proof. Damping factor is greater than 100 and gain at the 1.2 V setting is 33 dB.
Rack space, depth and power
2 RU at 3.5 x 19 x 16 in (89 x 482 x 406 mm) and 23 lb net. The sixteen inches of depth is the number to check against a shallow credenza rack before the room is signed off. Mains is 100 - 240 VAC, 50 - 60 Hz with active PFC, on the locking IEC cord in the box.
Which of these applies depends on what is already in the ceiling. See the rooms we build.
Send us the existing speaker schedule, or see the rest of the audio range.