QSC CX404 Specifications

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
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
ProfessionalPowerAmplifiers
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
CX254 | CX404 | CX204V
All models include an
integrated security cover for
tamper-proof installations

QSC CX404 Specifications

General

Channels	4
Power Output (8 Ohms per channel)	100 W
Damping Factor	> 500
Signal-to-Noise Ratio	> 100 dB
Frequency Response	20 Hz - 20 kHz
Input Impedance	20 kOhms
Dimensions (H x W x D)	3.5" x 19"
Power Requirements	50/60Hz