{"product_id":"qsc-gx3-425w-2-channel-power-amplifier","title":"QSC GX3 425W 2-channel Power Amplifier","description":"\u003cb\u003eQSC GX3 425-watt Power Amplifier at a Glance:\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003eThe right amount of power for your application\u003c\/li\u003e\n\u003cli\u003eEfficient operation\u003c\/li\u003e\n\u003cli\u003eGuardRail: protection from overloads\u003c\/li\u003e\n\u003cli\u003eSubwoofer-ready when you are\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eThe right amount of power for your application\u003c\/b\u003e\u003cbr\u003eGX amplifiers deliver just the right amount of power to the most popular speakers used by entertainers. Most loudspeaker manufacturers recommend an amplifier with power output equal to the speaker's \"Program (Music) Power\" rating or two times the \"Continuous (RMS) Power\" rating.\u003c\/p\u003e\n\u003cp\u003eThe GX3 is ideal for speakers in the 300 watt (Program) range, while the GX5 provides full performance for 500 watt (Program) speakers. Both models supply maximum possible power to 4 ohm and 8 ohm loads. Owners of popular 4 ohm loudspeakers (dual-woofer, two-way models and many subwoofers) will find the 700 watt (4 ohm) power of the GX5 an ideal match.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eEfficient operation\u003c\/b\u003e\u003cbr\u003eThe GX3 uses the latest evolution of the QSC Grounded Collector output system, for optimum cooling of the critical power transistors. A true Class B biasing system combines maximum thermal efficiency with excellent audio performance. The GX5 uses a Class H system, based on key elements of the PLX Series, almost doubling power in the same size and weight. QSC design expertise allows the output devices to shift from low-power to high-power rails in less than a millionth of a second, ensuring that the output power is always right where it needs to be without excess loss.\u003c\/p\u003e\n\u003cp\u003eBoth amplifiers use premium toroidal power transformers for reliable \"mid-weight\" performance. A variable-speed fan moves air crosswise through the amplifier, drawing cool air in over the power transformer, through the fan, and then over the heat sink. This keeps the transformer cool and allows a full size heat sink to fit in a down-sized chassis. As always, the amplifiers are fully protected from the usual hazards of the trade, ensuring stable performance and long life.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGuardRail: protection from overloads \u003c\/b\u003e\u003cbr\u003eGuardRail protection delivers full peak power while preventing detrimental overloads. During excessive clipping, or extreme overheating, GuardRail reduces gain just enough to preserve the integrity of the music, protect the speakers and keep the audience excited, without unprofessional distortion levels or shutdowns.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSubwoofer-ready when you are\u003c\/b\u003e\u003cbr\u003eA subwoofer reduces strain on the full-range speaker, allowing it to play louder, or letting a smaller speaker do the same job. The GX Series supports this mode with a Crossover switch that splits the full-range input entering Ch 1, sending 20 Hz - 100 Hz to the sub (Ch 1) and 100 Hz - 20 kHz to the top box (Ch 2). The front panel gain controls balance the sub and top box, while GuardRail optimizes peak power into the sub and top individually, for greater musical impact and dynamic range.\u003c\/p\u003e\n\u003cb\u003eQSC GX3 425-watt Power Amplifier Features:\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003ePower levels matched to the most popular speakers\u003c\/li\u003e\n\u003cli\u003eOptimized for maximum real-world headroom into 4 ohm and 8 ohm speaker systems\u003c\/li\u003e\n\u003cli\u003eInputs: XLR, 1\/4\" TRS and phono input connectors for compatibility with any source\u003c\/li\u003e\n\u003cli\u003eOutputs: Speakon combo accepts, 1\/4\" (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems.\u003c\/li\u003e\n\u003cli\u003eMinimum depth chassis (10.1\" \/ 257 mm) fits in compact, inexpensive effects racks\u003c\/li\u003e\n\u003cli\u003eLightweight - less than 30 lbs.\u003c\/li\u003e\n\u003cli\u003eDetented gain controls for precise setting and matching of sensitivity\u003c\/li\u003e\n\u003cli\u003eGuardRail automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show\u003c\/li\u003e\n\u003cli\u003eFront panel LEDs monitor power, signal and clipping\u003c\/li\u003e\n\u003cli\u003eSubwoofer\/Satellite crossover built-in\u003c\/li\u003e\n\u003cli\u003ePower at 4 ohms\/1kHz (both channels driven): 425W\u003c\/li\u003e\n\u003cli\u003eDistortion (typical): 20Hz-20kHz, 1dB below rated power\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eDynamic headroom (4 ohms): 2dB\u003c\/li\u003e\n\u003cli\u003eInput impedance (ohms): reater than 20k (balanced)\u003c\/li\u003e\n\u003cli\u003eMaximum input level: +24 dB (16 Vrms)\u003c\/li\u003e\n\u003cli\u003eInput connectors (each channel):\u003cbr\u003e3-pin XLR and 1\/4\" TRS, balanced, parallel\u003cbr\u003ePhono, unbalanced\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput connectors (each channel)\u003cbr\u003eSpeakon, 1\/4\", binding posts\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAmplifier and load protection:\u003cbr\u003eShort circuit; open circuit; thermal; RF protection; load protected against DC faults\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFront-panel controls and indicators: Gain controls, 21 detents; red clip LEDs, proportional, 0.1% THD threshold; green signal LEDs, threshold -35dB; blue power LED, AC on\u003c\/li\u003e\n\u003cli\u003eRear panel controls: Full range\/crossover switch\u003cbr\u003e100Hz, 3rd order LP (sub), 2nd order HP (top)\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions\" Height: 3.5\"\/2RU;\u003cbr\u003ewidth: 19\"; depth: 10.1\"\u003c\/li\u003e\n\u003cli\u003eNet weight: 27 lbs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QSC","offers":[{"title":"Default Title","offer_id":44902169673947,"sku":"","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/1891\/2987\/files\/GX3-Front.jpg?v=1709048079","url":"https:\/\/ssvaudio.com\/zh\/products\/qsc-gx3-425w-2-channel-power-amplifier","provider":"SSV Audio","version":"1.0","type":"link"}