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:
| QA1004 Stereo Power Amp | QA2004 Stereo PowerAmp | | |
| 2x 575-w at 4O | 2x 870-w at 4O | | |
| 290-W per channel @ 1kHz at <0.1% T.H.D. both channels driven | 490-W per channel @ 1kHz at <0.1% T.H.D. both channels driven | | |
| 575-W per channel@ 1kHz at <0.1%T.H.D. both channels driven | 870-W per channel @ 1kHz at <0.1% T.H.D. both channels driven | | |
| <0.1%@250-W per channel from 20 HZ to 20kHz | <0.1%@400-W
per channel from 20 HZ to 20kHz | |
| 2O - Audio signal / 4O - Signal wave |
| +5 to -15 from 20 Hz to20kHz | |
| 20 kO, balanced; 10 kO, unbalanced |
| Two temperature dependant variable speed 80mm high-output DC fans | |
| Two front panel attenuators, rear panel mode switch and gain select switch |
| Linkwitz-Reily (24 dB/Octave): Off/35/80 Hz |
| Linkwitz-Reily (24 dB/Octave): Off/80/110Hz |
| 29 dB or 24 dB | 32 dB or 26 dB | | |
| >-60 dB @ 1kHz at rated power @ 8O |
| >-105 dB, "A" weighted referenced to rated power @ 8O | >-107 dB, "A" weighted referenced to rated power @ 8O |
| >30V/us | | |
| >500:1 @ 20Hz - 1kHz | >700:1 @ 20Hz - 1kHz | |
| Two clip, two signal presence, one active status, two protection |
| Thermal, DC, turn-on bursts, subsonic, incorrect loads |
| XLR . Speakon . 240/230Volt 16 amp IEC mains |
| Cold Steel Rolling + Machined aluminium front panel |
| 89mm x 483mm x 496mm | |
| 17kg | 21kg | | |
- Packaged Shipping Weight:
| 20kg | 23kg | | |