QA4004 1700 WATT PER CHANNEL STEREO POWER AMP QUEST

INTRODUCTION Quest QA Series power amplifies are built to work hard inthe tough environment of pro audio. Industrial spec multi-speed fans and generous heat sinks will keep the output stage cool even if the amplifier is installed in a dusty and poorly ventilated area. Service and maintenance is easy as the internal architecture is laid out for easy access by a qualified technician. The sonically superior output stage is composed of a generous abundance of output devices for greater electronic stability and sonic fidelity. QA series amplifiers are manufactured to a standard accepted as desirable practice for a concert standard power amplifier. Heavy gauge welded 16-gauge steel chassis with vibration proof fittings, and an emphasis on over-engineering, guarantees years of trouble-free service in the most demanding environments. Quest set about a design and layout for easy service, noteasy manufacture. A minimum of disassembly is required for testing and maintenance meaning lower operating costs and longer amplifier life. FEATURES Input Stage: Pro active protection senses stages of system function to safeguard your investment both on turn on and while under operation. Silent switch on/off circuitry reduces potential speaker damage in the event of intermittent power. Power supply: The high current power supply is manufactured to function reliably at high temperatures and well exceeds industry standards. This results in smooth bass response and considerable dynamic headroom. Industrial Spec Fans: Dual heavy duty cooling fans guarantee long life of all electronic components. Input Connection: XLR parallel male and female input connections calibrated for most pro spec system controllers and electronic cross-overs. features Speakon Connections: International AES standard Speakon connectors wired for two channel and Bridge mono operation simplify speaker connections. Limiter: A switchable high speed limiter acts as a final speaker protection but can be disconnected where sensing speaker system controllers are required. Built in switchable X-overs: High Amplification and low pass filters on each channel make the versatile QA series even more flexible witha sub-mid/high frequency dividing network. Selectable Gain settings: Adjustable input switching for 0.775V, 32 dB or 26dB make system calibration easy. Easy access air filters: User serviceable air filters are easy to maintain for trouble free operation. NOTE THE QA SERIES POWER AMPLIFIERS ARE NOT BRIDGEABLE   SPECIFICATIONS: QA3004 STEREO POWER AMP QA4004 STEREO POWERAMP     2x 1100-w at 4O 2x 2000-w at 4O     Rated Power (2x 8O): 660-W per channel @ 1kHz at 0.5% @ 400 W per channel from 20 Hz to 20 kHz   Minimum Load Impedeance: 4ohms - Sine wave Phase Response: QA3004 5 to -15 from 20 Hz to 20kHz / QA4004 20 to -25 from 20 Hz to 20 kHz   Input Impedance: 20 kO, balanced; 10 kO, unbalanced Cooling: Two temperature dependant variable speed 80mm (QA3004)-120mm (QA4004) high output DC fans   Controls: Two front panel attenuators, rear panel mode switch and gain select switch High Pass: Linkwitz-Reily (24 dB/Octave): Off/35/80 Hz Low Pass: Linkwitz-Reily (24 dB/Octave): Off/80/110Hz Voltage Gain @ 0.775-V: 35 dB or 29 dB 38 dB or 32 dB     Crosstalk: >-60 dB @ 1kHz at rated power @ 8O Hum and Noise: >-107 dB, "A" weighted referenced to rated power @ 8O >-104 dB, "A" weighted referenced to rated power @ 8O Slew Rate: QA3004 - >40V/us / QA4004 - >44V/us     Damping factor (8O): >700:1 @ 20Hz - 1kHz >800:1 @ 20Hz - 1kHz   Protection: Thermal, DC, turn-on bursts, subsonic, incorrect loads Connectors: XLR . Speakon speaker O/P . 240/230 Volt 16 amp IEC mains Construction: Cold Steel Rolling Machined aluminium front panel Dimensions (HxWxD): QA3004 - 89mm x 483mm x496mm / QA4004 - 132 x 483 x 496 mm   Net Weight: 23kg 35kg     Packaged Shipping Weight: 26kg 38kg         Barcode Number: 9331001001255