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PA amplifier with SMPS, 4 x 2500 W / 2 ohms, 4 x 2100 W / 4 ohmsThe 4-channel PA amplifiers of the QCA series offer ultra-high output power paired with a low weight and small overall height. The amplifiers use a patented second-generation Class I output circuitry which combines the high efficiency off Class D and the sound quality of Class A. Featuring a modern switch-mode power supply, the amplifiers provide up to 10 kW peak power and weigh less than 14 kg. This makes the series particularly attractive for mobile applications. The amplifiers can be used flexibly in stereo operation, parallel operation or in mono bridge operation. Extensive protective circuits will protect the amplifiers and the speakers connected.FeaturesPA amplifier with SMPS, 4 x 2500 W / 2 ohms, 4 x 2100 W / 4 ohms4-channel PA amplifier with class I circuitry Low weight and height due to integrated switch mode power supply Reliable power amp with high impulse stability for a wide range of applications (e.g. compact PAs, multi-way PAs, concerts) 3 operating modes can be selected (stereo, parallel or bridged) 4 level controls Input sensitivity adjustable LED VU meter and LEDs for activated protective circuit (protect), overload (clip), and signal per channel Speaker switch-on delay Complete protection set Electronically balanced inputs via XLR mounting jacks, with XLR feed-through outputs Speaker outputs via lockable Speaker plugs Rugged steel chassis with aluminum front panel Air flow from front to rear The device is cooled by temperature-controlled fan Built with NEUTRIK connector (19") 48.3 cm rack installation 2 UPackage contents1 x amplifier, 1 x screen, 4 x feet, 1 x user manualTechnical specifications Power supply: 230 V AC, 50 Hz Power consumption: 1150 W 1/8 power Output power: 4 x 2500 W RMS (2 ohms) 4 x 2100 W RMS (4 ohms) 4 x 1300 W RMS (8 ohms) 2 x 5000 W RMS bridged (4 ohms) 2 x 4200 W RMS bridged (8 ohms) Power connection: Fixed power supply cord with safety plug Frequency range: 20 - 20000 Hz S/N ratio: >80 dB THD: <0,05 % at 1 kHz Cooling: 3 x temperature-controlled fan , Air flow from front to rear Impedance: Input 10 kOhm , unbal. Input 20 kOhm , bal. Gain: 40,3 dB/ 0,775 V 38 dB/ 1,0 V 35,1 dB/ 1,4 V Circuitry: Class I Slew rate: >10 V/µs Damping factor: >800 Crosstalk: >65 dB Control elements: Power switch, level control per channel, mode switch (stereo/parallel/bridged), Input sensitivity switch Controls: Overheat; overload; short-circuit; softstart; DC voltage; VHF Status LED: Power, level meter, clip, protect Connections: Input: line via 4 x 3-pin XLR (F) mounting version Output: line via 4 x 3-pin XLR (M) mounting version Output: speaker via 4 x speaker built-in socket (F) Input sensitivity: 0,775 V; 1,0 V; 1,4 V , switchable; 26 dB; 32 dB; 38 dB , switchable Use of brands: Built with NEUTRIK connector Housing design: (19") 48.3 cm rack installation 2 U Dimensions: Width: 48,3 cm Depth: 44,5 cm Height: 8,9 cm Weight: 13,90 kg