CX254 CX404 CX204V, Features | QSC Audio instruction

CX 4-channel

Professional Power Amplifiers

CX254 CX404 CX204V

All models include an integrated security cover for tamper-proof installations

The 4-channel CX amplifiers give you four channels in only two rack spaces, without compromising on power. Choose from three models, a direct 70 volt model and two low- impedance versions. Each model is equipped with exclusive QSC PowerLight™ switching power supply technology to virtually eliminate noise and hum. With high-output power, versatile loading options, high-thermal capacity and unmatched reliability, the CX Series is the perfect solution to any permanently installed sound system.

CX 4-channel Amplifiers

		Watts per channel
Model	70V	8Ω	4Ω	2Ω

CX254	−	170	250	450*

CX404	−	250	400**	−

CX204V	200	−	−	−

20 Hz – 20 kHz, 0.05% THD *1 kHz, 1% THD

**1 kHz, 0.1% THD

Features

•Three models that range in power from 170 watts to 450 watts per channel

•Compact size – all models only 2 RU and 14" deep for reduced rack cost and floor space

•Channels 1&2 and 3&4 bridgeable for maximum flexibility

•Active Inrush Limiting eliminates AC inrush current, removing the need for expensive power sequencers

•HD15 DataPort connector for QSControl computer control

•Custom integrated security cover for tamper-proof installations

•Variable speed fan for low noise

•1 dB detented gain controls for fast and accurate gain settings

•Detachable Euro-style input connectors

•DIP switch control for clip limiters, high-pass filters, bridge-mono and parallel operation

•Exclusive PowerLight switch-mode power supply technology for high performance and compact size

•Selectable high-pass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material (33 Hz or 75 Hz on CX254 and CX404, 50 Hz or 75 Hz on CX204V)

•Comprehensive front panel indicators including signal, clip, protect and QSC’s exclusive bridge-mono and parallel input LEDs

•Barrier strip output connector

•Comprehensive protection circuitry including DC, infrasonic, thermal overload and short circuit protection

•High-performance Class AB+B complementary bipolar output circuitry

•Lightweight – all models only 21 pounds (9.5 kg) for easier racking and shipping

•3-year warranty plus optional 3-year extended service contract

CX254, CX204V, CX404 specifications

QSC Audio has established itself as a leader in professional audio solutions, and their CX series amplifiers, including the CX204V, CX254, and CX404, stand out for their performance and versatility. These amplifiers are specifically designed to meet the needs of commercial audio applications, such as in venues, corporate environments, and educational institutions.

The CX204V is a 2-channel amplifier that delivers 200 watts per channel at 4 ohms, making it ideal for smaller venues or installations that require high-quality audio without overwhelming power. One of its key features is the inclusion of built-in DSP (Digital Signal Processing) capabilities, allowing users to optimize their sound with advanced filtering and equalization options. Additionally, the amplifier supports a range of input options, including balanced XLR and 1/4-inch connectors, providing flexibility for various audio setups.

Moving to the CX254, this 2-channel amplifier boosts power output to 250 watts per channel at 4 ohms, making it suitable for larger spaces that necessitate a bit more oomph. The CX254 also includes QSC’s Power Factor Correction technology, which ensures efficient power usage and greater amplification performance, even during demanding situations. Furthermore, it features RS-232 control capabilities, providing users with remote operation options and making integration into existing audio systems seamless.

The CX404 takes things a step further with its 4-channel configuration, delivering 200 watts per channel at 4 ohms. This amplifier is particularly well-suited for multi-zone applications where audio needs to be distributed across various areas. With its advanced overheating protection and short-circuit protection features, the CX404 is built for durability and reliability, ensuring consistent performance without the risk of damage during extended use.

All three amplifiers in the CX series include QSC's innovative Class D topology, offering lightweight and compact design without sacrificing power or audio quality. The CX series is also distinguished by its robust construction, including a rugged chassis designed to withstand the rigors of installation and performance use.

In summary, the QSC Audio CX204V, CX254, and CX404 seamlessly combine power, efficiency, and versatility, making them ideal choices for a variety of commercial audio applications. Their built-in technologies, advanced features, and solid construction emphasize QSC’s commitment to delivering exceptional sound experiences.