QSC CX204V User manual

PROFESSIONAL POWER AMPLIFIERS
PROFESSIONAL POWER AMPLIFIERS
CX
CX
•Detachable Euro style input connectors
•DIP switch control for clip limiters,high pass filters,bridge-mono and parallel operation
•Exclusive PowerWave 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 non-V models,50 Hz or 75 Hz on V models)
•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
•Light weight – all models only 21 pounds (9.5 kg) for easier racking and shipping
•3-year warranty plus optional 3-year extended service contract
CX 4-Channel 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
The new 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 equipped with our
exclusive PowerWave™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.
1675 MacArthur Boulevard
Costa Mesa, CA 92626
Ph: 800/854-4079 or 714/957-7100
Fax: [phone]
www.qscaudio.com
email: [email protected]
20 Hz-20 kHz, .05% THD † 1 kHz, 0.1% THD *1 kHz, 1% THD
CX 4-CHANNEL AMPLIFIERS
Model 70V 8Ω4Ω2Ω
CX204V 200
x
4• • •
CX254 • 170
x
4 250
x
4 450
x
4
*
CX404 • 250
x
4 400
x
4
†
n/a
4-channel
4-channel
All models include
an integrated
security cover
for tamper-proof
installations.

CX254
CX SPECIFICATIONS
–
8 ohms 0.05% THD 20 Hz-20 kHz
4 ohms 0.05% THD 20 Hz-20 kHz
2 ohms 1% THD 1 kHz
70V 0.05% THD 20 Hz-20 kHz
70V 0.05% THD 1 kHz
70V 1% THD 1 kHz
16 ohms 0.1% THD 20 Hz-20 kHz
8 ohms 0.1% THD 20 Hz-20 kHz
4 ohms 1% THD 1 kHz
140V 0.1% THD 20 Hz-20 kHz
140V 0.05% THD 1 kHz
140V 1% THD 1 kHz
Distortion (SMPTE-IM)
–
– 450 Watts not recommended
250 Watts 400 Watts†
170 Watts 250 Watts
200 Watts –
–
–
220 Watts
300 Watts
400 Watts
440 Watts
600 Watts
–
–
–
–
–
–
–
–
–
CX404
Stereo Mode (all channels driven)
Bridge Mono Mode
–
–500 Watts 800 Watts†
– 900 Watts not recommended
340 Watts 500 Watts
Less than 0.02% Less than 0.01% Less than 0.01%
Noise (20Hz-20kHz)
Input Sensitivity
Gain (for full-rated output power)
Input Clipping
Output Circuitry
-105 dB -106 dB -106 dB
1.26 Vrms 1.22 Vrms 1.22 Vrms
35 dB @ 70.7v
10 Vrms (+22 dB)
29 dB @ 8 ohms
10 Vrms (+22 dB)
31 dB @ 8 ohms
10 Vrms (+22 dB)
Class AB+B Class AB+B Class AB+B
CX204V
Continuous Average Output Power Per Channel
Bridge-Mono Mode Operation
Distortion (typical)
Frequency Response
Damping Factor
Input Impedance
Connectors
Cooling
20 Hz-20 kHz: 10 dB below rated power
1.0 kHz and below: full rated power
Less than 0.01% THD
Less than 0.01% THD
20 Hz-20 kHz, ± 0.2 dB 8 Hz-50 kHz, +0/-3 dB
Greater than 500 (1 kHz and below)
6 KΩunbalanced, 12 KΩbalanced
Input: 3 position Euro-style detachable barrier block, Ch 1,2,3 & 4 DataPort: HD-15 Connector, Ch 1+2, Ch 3+4
Output: Six-position barrier strip with monitor connections, Ch 1+2, Ch 3+4
Variable speed fan, rear-to-front airflow through tunnel heat sink
All models All models
Amplifier Protection
Load Protection
Dimensions
Weight
Power Requirements
Full short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads
On/off muting, DC-fault power supply shutdown
19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 rack spaces), 14" (35.6 cm) deep (from front mounting rails)
21 lb (9.5 kg) net, 27 lbs (12.3 kg) shipping
100, 120, 230 Vac, 50-60 Hz
Controls
Indicators
Front: AC switch, Ch.1 and Ch.2 gain knobs
Rear: DIP switch for Ch.1 and Ch.2: clip limiter on/off, LF filter on/off, LF filter freq select 33 Hz or 75 Hz
for non-V models; 50 Hz or 75 Hz for V models; inputs parallel or stereo; bridge mode
PWR-ON: Green LED LEVEL -20 dB: Green LED (1 per channel)
BRIDGED: Yellow LED LEVEL -10 dB: Green LED (1 per channel)
PARALLEL INPUTS: Yellow LED CLIP/PROT: Red LED (1 per channel)
SIGNAL -35dB: Green LED (1 per channel)
QSC Audio Inc. 1675 MacArthur Boulevard • Costa Mesa, CA 92626 •Ph: 800/854-4079 or 714/957-7100 •Fax: [phone] • www.qscaudio.com
† (0.1% THD 1 kHz)
Idle
1/8 Average Power*
(typical of program material
at maximum unclipped power)
*Pink noise
1/3 Average Power*
(typical of program material
with severe clipping)
*Pink noise
8 ohms
8 ohms
4 ohms
4 ohms
2 ohms
70 Volts
2 ohms
70 Volts
0.7 A
5.8 A
9.2 A
14.3 A
8.8 A
14.2 A
21.7 A
–
–
–
–
–
–
–
–
12.7 A
8.3 A
0.8 A
CX204V CX254 CX404
8.1 A
12.4 A
not rated
12.2 A
19.3 A
not rated
–
0.7 A
–
120V CURRENT CONSUMPTION
Multiply currents by 0.5 for 230V units.
CX 4-Channel Spec Sheet 11/08/01