Qsc - Cx4T Spec Sheet 电路图.pdf

CX4T FEATURES 1675 MacArthur Boulevard Costa Mesa, California 92626-1468 USA Phone: 714/754-6175 Fax: 714/754-6174 CX Series Toroidal Output Transformers Provide Full Electrical Isolation and Meet Worldwide Safety Agency Approval Automatic Two-Speed, High Efficiency Fan CoolingFor Quiet Normal Operation with Maximum Cooling on Demand Rear-to-Front Air FlowKeeps Equipment Racks Cool Front Panel Status LEDsIndicate Clip and Power Rear Panel Detented Gain Controls For Security and Resetability Detachable Euro-Style Barrier Strip InputEasy and Economical Connections Double Thickness Rack EarsFor Extra Strength Covered Barrier Strip Output ConnectionsMeets Safety Agency Requirements Simple Barrier Strip Connection Determines Output Mode25 V, 70 V, 100 V and Direct Outputs Available Simultaneously Built-in 50 Hz Subsonic Filter Prevents Speaker Transformer Saturation With Minimal Effect on Program Material he CX4T amplifier is ideal for use in any permanently installed sound system. Designed to meet the spe- cialized needs of high power, high quality audio sys- tems, the CX4T offers the features requested most by contractors and installers from around the world. The CX4T resides in a rugged two rack-space steel chassis approximately 17.9 inches deep. With high quality internal isolation transformers, the CX4T fea- tures built-in capability for driving 25, 70 or 100 volt distributed sound systems as well as direct output voice coil loads. Versatile design allows a 25, 70 or 100 volt connection on one channel and a direct connection on the other channel. For maximum flex- ibility, you can even drive a distributed line and a low impedance load on the same channel at the same time! The CX4T features a built-in 50 Hz sub- sonic filter that reduces saturation of speaker trans- formers caused by excessively low frequencies. High output power, versatile loading options, high ther- mal capacity and rugged reliability make the CX amplifiers ideal for any high quality sound system installation. LOADOUTPUT POWER (Direct Outputs)OUTPUT POWER (Isolated Outputs) 45Hz-20kHz, 0.1% THD1kHz, 1% THD1 kHz, 0.1% THD Stereo (W/Ch) 8150 watts170 watts 4225 watts250 watts 2350 watts* 25 volts150 watts 70 volts175 watts 100 volts175 watts Mono-Bridged 16300 watts340 watts 8450 watts500 watts 4700 watts* 50 volts300 watts 140 volts350 watts 200 volts350 watts *typical PRELIMINARY SPECIFICATIONS RadioFans.CN 收音机爱 好者资料库 FPO/BACK CX4T Specifications POWER OUTPUT Direct output, watts per channel, both channels driven 8, 45 Hz-20 kHz, 0.1% THD150 8, 1 kHz, 1% THD170 4, 45 Hz-20 kHz, 0.1% THD225 4, 1 kHz, 1% THD250 2, 1 kHz, 1% THD*350 Isolated outputs, watts per channel, both channels driven 70V or 100V, 1 kHz, 0.1% THD175 25V, 1 kHz, 0.1% THD150 Direct Outputs, bridged mono 8, 45 Hz-20 kHz, 0.1% THD450 4, 1 kHz, 1% THD*700 Isolated outputs, bridged mono 50V, 1 kHz, 0.1% THD300 140V, 1 kHz, 0.1% THD350 200V, 1 kHz, 0.1% THD350 DISTORTIONSMPTE-IM, less than 0.05%, direct outputs FREQUENCY RESPONSE Direct outputs:-3 dB 50 Hz*, -0.2 dB 20 kHz Isolated outputs:50 Hz*-16 kHz, +0, -3 dB * Low frequency response is limited by 12 dB/octave 50-Hz high-pass filter. DAMPING FACTOR200 ( direct outputs) OUTPUT REGULATION100V1.0 dB; 70V1.1 dB; 25V2.0 dB NOISE100 dB below rated output (20 Hz to 20 kHz) VOLTAGE GAIN direct outputs35x (31 dB) INPUT SENSITIVITY, VRMS for rated power, 80.96 INPUT IMPEDANCE10K unbalanced, 20K balanced CONTROLS Front: AC Switch Rear: Ch.1 and Ch. 2 Attenuator Knobs (11 detents: 0, -2, -4, -6, -8, -10, -12, -14, -18, -24, off) FRONT PANEL/INDICATORS (per channel) CLIP:Red LED POWER:Green LED REAR PANEL/CONNECTORS (each channel) Input:Euro-style detachable header Output:Covered barrier strips COOLING2-speed fan, with back-to-front air flow AMPLIFIER PROTECTION Output Averaging short circuit protection, open circuit, ultrasonic, RF, thermal muting Stable into reactive or mismatched loads LOAD PROTECTIONTurn-on/turn-off muting, DC-fault OUTPUT CIRCUIT TYPEClass AB complementary linear stage POWER REQUIREMENTS:100, 120, 220-240 VAC, 50/60 Hz POWER CONSUMPTION Normal operation: 1/8 power 4 per channel Worst case continuous program: 1/3 power 2 per channel Maximum: full power 2 per channel Multiply current by 0.5 for 220-240 VAC operation DIMENSIONS Faceplate WidthStandard 19 (48.3 cm) Rack Mounting Chassis Depth17.9 (45.5 cm) deep (to rear support ears) Faceplate Height3.5 (13.3 cm) WEIGHTShipping46 lb; 21 kg; Net40 lb; 18.2 kg ARCHITECTS AND ENGINEERS SPECIFICATIONS The amplifier shall contain all solid-state circuitry, using complementary silicon output devices in a Class AB output circuit. The amplifier shall operate from 50-60 Hz AC power, with internal taps for selecting voltages 100,120, or 220-240 VAC. The amplifier shall operate from a normal house- hold AC outlet, drawing less than 500 VA when driven with random pro- gram material at 1/8 rated power into four ohm loads. The amplifier shall be supplied with a single molded AC cord having an appropriate AC plug for the intended operating voltage. The amplifier shall employ forced-air cooling with a two speed fan for minimum acoustic noise. Air flow shall be from rear to front to avoid tem- perature rise inside the rack. Rack mounting shall be possible without clearance necessary between amplifiers for ventilation. The amplifier shall be capable of continuous operation at 1/8 power, into four-ohm loads, for ambient temperatures up to 104 F (40 C). The amplifier shall contain two independent channels, with separate AC transformer secondaries, power supplies, and protection systems. All pro- tection systems shall be self resetting upon removal of fault, and the re- maining channel shall continue to operate. Each channel shall have inde- pendent protective circuitry against open circuit, short circuit, or mis- matched loads. Each channel shall monitor temperature of its heat sink and shall trigger fan speed boost, and if necessary, signal muting to pre- vent excessive temperature rise. Each channel shall have on-off muting, acting for three seconds after turn-on, and within 1/4 second after turn- off or loss of AC power. Each channel shall have DC fault protection for the load. Fault fuses shall be adequately large to prevent nuisance blow- ing at any output power the amplifier is capable of delivering. Each channel shall have the following controls and displays: A rear panel Gain control and front panel displays consist of a green LED power-on indicator and a red LED showing true amplifier clipping. The output con- nectors for each channel shall be shrouded barrier strip connectors. The standard input panel shall provide detachable Euro-style header connec- tions for each channel. Inputs shall be electronically balanced, with a mini- mum impedance of 10 kilohms per side, and a common mode rejection of at least 50 dB from 20 Hz to 20 kHz. Internally-mounted toroidal output transformers shall provide electrically isolated output taps for 25, 70, and 100 volt distributed lines. The direct amplifier output shall also be available to drive voice coil loads. The use of voice coil and distributed line operation is independent on each chan- nel. It is possible to use both the direct and isolated outputs simulta- neously on a single channel, as long as the total power rating of the am- plifier is not exceeded. A built-in 50 Hz, second-order subsonic filter shall be provided to reduce saturation of speaker transformers, due to exces- sive low frequency program material. The filter is non-defeatable and af- fects all outputs. Each channel shall be capable of meeting the following performance cri- teria with both channels driven: Sine-wave output power of 150 watts into eight ohms, and 225 watts into four ohms, 50 Hz to 20 kHz, with less than O.1% THD. Frequency response at 3 dB below rated power shall be - 3 dB at 50 Hz and -0.2 dB at 20 kHz. The voltage gain shall be 35, equiva- lent to 31 dB, and the input sensitivity shall be 0.96 VRMS. The signal to noise ratio over the range of 20 Hz to 20 kHz shall exceed 100 dB. IHF damping factor shall exceed 200 for the direct outputs. Output regulation, of the isolated outputs, shall not exceed 1.0 dB at 100 volts, 1.1 dB at 70 volts and 2.0 dB at 25 volts. The amplifier chassis shall occupy two rack spaces, with provision for securing the rear corners. Depth from mounting surface to tips of rear supports shall be 17.9 (45.5 cm). Weight shall not exceed 40 Ibs. (18.2 kg). The amplifier shall be the QSC Audio Products Model CX4T. 1675 MacArthur Boulevard Costa Mesa, California 92626-1468 USA Phone: 714/754-6175 Fax: 714/754-6174 RadioFans.CN 收音机爱 好者资料库