User manual QSC AUDIO CX168 DATASHEET 06-04-08

[. . . ] CX 8-channel Professional Power Amplifiers CX168 | CX108V Designed for permanently installed sound systems where rackspace is at a premium, QSC's CX108V and CX168 provide unprecedented levels of channel density for multichannel amplifiers. [. . . ] Delivering tighter bass and clean, transparent highs, PowerLight also cuts waste heat, boosts reliability, and eliminates unwanted noise and hum. PowerLight is a revolutionary switching power supply technology that provides ample current to the audio power circuitry by charging the supply rails over 200, 000 times per second through an ultra-low noise impedance circuit. Unlike amplifiers that use conventional supplies, the audio signal is never starved prematurely and remains crisp and clean. Features · 00wattsperchannelat70volts(CX108V) 1 · 90wattsperchannelat8ohmsand130wattsperchannelat4ohms(CX168) · ompactsize--onlytworackspacesand14"deepforreducedrackspace C · hannelpairsbridgeableformaximumflexibility C · xclusivePowerLightswitch-modepowersupplytechnologyforhigh E performanceandcompactsize · ctiveinrushlimitingeliminatesACinrushcurrent, removingtheneedfor A expensivepowersequencers · ourHD15DataPorts(oneperchannelpair)forQSControlcomputer F controlorQSC'ssignalprocessingaccessories · Customintegratedgaincontrolsecuritycoverfortamperproofinstallations · 1dBrecesseddetentedgaincontrolsforfastandaccuratesettings · DetachableEuro-styleinputandoutputconnectors · IPswitchcontrolforcliplimiters, high-passfilters, bridge-monoand D paralleloperation · electablehigh-passfiltersprotectspeakersandpreventspeaker S transformersaturationwithminimaleffectonprogrammaterial (50Hzor75Hz;CX108V)(33Hzor70Hz;CX168) · omprehensivefrontpanelindicatorsincludingsignal, clip, bridgemono C andparallel-inputLEDs CX 8-channel Amplifiers Model CX168 CX108V 70V* -- 8 x 100 Watts per channel 8 8 x 90 -- 4** 8 x 130 -- · ullyprotected--includingDC, infrasonicandultrasonic, thermaloverload F andshortcircuitprotection · High-performanceClassAB+Bcomplementarybipolaroutputcircuitry · Lightweight--only21pounds(9. 5kg)foreasierrackingandshipping · 3-yearwarrantyplusoptional3-yearextendedservicecontract 20 Hz ­ 20 kHz, 0. 05%THD * 20 Hz ­ 20 kHz, 0. 2%THD **20 Hz ­ 20 kHz, 0. 1%THD CX 8-Channel CX168 Stereo Mode (all channels driven) 8 / 20 Hz ­ 20 kHz / 0. 05% THD 4 / 20 Hz ­ 20 kHz / 0. 1% THD Midband Ratings 8 / 1 kHz / 0. 1% THD 4 / 1 kHz / 0. 1% THD 70V / 20 Hz ­ 20 kHz / 0. 2% THD Bridge-Mono Mode 16 / 20 Hz ­ 20 kHz / 0. 1% THD 8 / 20 Hz ­ 20 kHz / 0. 1% THD 140V / 20 Hz ­ 20 kHz / 0. 2% THD Signal to Noise (20 Hz ­ 20 kHz) Input Sensitivity Voltage Gain Input Clipping Output Circuitry Frequency Response Damping Factor Input Impedance Distortion (SMPTE-IM) Distortion (typical) 20 Hz ­ 20 kHz: 10 dB below rated power 1. 0 kHz and below: full rated power Cooling Connectors Continuous average output power per channel 90 W 130 W All channels driven 100 W 140 W -- -- -- Single channel 120 W 180 W -- -- 100 W -- CX108V Specifications Bridge-mono mode operation 180 W 260 W -- -107 dB 1. 35 Vrms at 8 20x (26 dB) 6 Vrms (+18 dBu) Class AB+B 20 Hz ­ 20 kHz, + 0. 2 dB | 8 Hz ­ 50 kHz, +0/-3 dB > 200 (5 kHz and below) 6k ohms unbalanced, 22k ohms balanced < 0. 02% 200 W -100 dB 1. 26 Vrms at 70V 56x (35 dB) 6 Vrms (+18 dBu) Class AB+B 20 Hz ­ 20 kHz, + 0. 4 dB | 8 Hz ­ 70 kHz, +0/-3 dB > 500 (5 kHz and below) 6k ohms unbalanced, 22k ohms balanced Controls Indicators Amplifier Protection Load Protection Dimensions (HWD) Weight - Net / Shipping Power Requirements 120V Current Consumption* 1/8 power pink noise Idle 8 (typical of program material at 4 maximum unclipped power) 70V 1/3 power pink noise 8 (typical of program material 4 with severe clipping) 70V * Multiply currents by 0. 5 for 230V units < 0. 1% THD < 0. 03% THD Variable-speed fan / rear-to-front air flow through tunnel heat sink Input: 3-pin Euro-style detachable terminal blocks (one per channel) DataPort: HD-15 connector (Ch. 1+2, 3+4, 5+6, 7+8) Output: two 8-pin Euro-style detachable terminal blocks Front: AC switch, Ch. 1, 2, 3, 4, 5, 6, 7 & 8 gain knobs Rear: DIP switches for Ch. 1 - 8, clip limiter on/off, LF filter on/off, LF filter freq select 33 or 70 Hz for CX168 LF filter freq select 50 or 75 Hz for CX108V, inputs parallel or stereo; bridge mode Power-On: Green LED / Parallel inputs: Orange LED (1 per channel pair) / Signal -35 dB: Green LED (1 per channel) Bridged: Yellow LED (1 per channel pair) / Clip: Red LED (1 per channel) Full short circuit, open circuit, thermal, ultrasonic, and RF protection. [. . . ] Patents may apply or be pending. 1675 MacArthur Boulevard · Costa Mesa, CA 92626 · Ph: 800/854-4079 or 714/957-7100 · Fax: 714/754-6174 CX 8-channel Spec Sheet - 06/04/08 qscaudio. com [. . . ]