QA Series Power Amplifier
QA1004 [2x 575w @ 4Ω] – QA2004 [2x 870w @4Ω] – QA3004 [2x 1100w @ 4Ω] – QA4004 [2x 2000w @ 4Ω]
Introduction
Quest QA Series power amplifies are built to work hard in the 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, not easy 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 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 with a sub-mid/high frequency dividing network.
- Selectable Gain settings: Adjustable input switching for 0.775V, 32 dB or 26 dB make system calibration easy.
- Easy access air filters: User serviceable air filters are easy to maintain for trouble free operation.
Image Gallery
QA1004 Front Panel
QA2004 Front Panel
QA3004 Front Panel
QA4004 Front Panel
QA3004 Back Panel
QA3004 Back Panel
Specifications
| QA1004 | QA2004 | QA3004 | QA4004 | |
| 2x 575-w at 4Ω | 2x 870-w at 4Ω | 2x 1100-w at 4Ω | 2x 2000-w at 4Ω | |
| Rated Power (2x 8Ω): |
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 | 660-W per channel @ 1kHz at <0.05% T.H.D. both channels driven | 993-W per channel @ 1kHz at <0.05% T.H.D. both channels driven |
| Rated Power: (2x 4Ω): |
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 | 1100-W per channel @ 1kHz at <0.05% T.H.D. both channels driven | 2400-W per channel @ 1kHz at <0.05% T.H.D. both channels driven |
| T.H.D: | <0.1%@250-W per channel from 20 HZ to 20kHz | <0.1%@400-W per channel from 20 HZ to 20kHz |
<0.5%@400-W per channel from 20 HZ to 20kHz | |
| Phase Response: | +5 to -15 from 20 Hz to 20kHz | +20 to -25 from 20 Hz to 20kHz | ||
| Input Impedance: | 20 kΩ, balanced; 10 kΩ, unbalanced | |||
| Cooling: | Two temperature dependant variable speed 80mm high-output DC fans | Two temperature dependant variable speed 120mm 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: |
29 dB or 24 dB | 32 dB or 26 dB | 35 dB or 29 dB | 38 dB or 32 dB |
| Crosstalk: | >-60 dB @ 1kHz at rated power @ 8Ω | |||
| Hum and Noise: | >-105 dB, "A" weighted referenced to rated power @ 8Ω | >-107 dB, "A" weighted referenced to rated power @ 8Ω | ||
| Slew Rate: | >30V/us | >40V/us | >44V/us | |
| Damping factor (8Ω): | >500:1 @ 20Hz - 1kHz | >700:1 @ 20Hz - 1kHz | >800:1 @ 20Hz - 1kHz | |
| Indicator LEDs: | Two clip, two signal presence, one active status, two protection | |||
| Protection: | Thermal, DC, turn-on bursts, subsonic, incorrect loads | |||
| Connectors: | XLR . Speakon . 240/230 Volt 16 amp IEC mains | |||
| Construction: | Cold Steel Rolling + Machined aluminium front panel | |||
| Dimensions (HxWxD): | 89mm x 483mm x 496mm | 132 mm x 483mm x 496mm | ||
| Net Weight: | 17kg | 21kg | 23kg | 35kg |
| Packaged Shipping Weight: | 20kg | 23kg | 26kg | 38kg |
Contact Quest
Phone: +61 (0) 3 8373 6868
Address: 86 Derby Street, Pascoe Vale VIC 3044 AustraliaFind Your Local Distributor
Feel free to get in touch with your nearest distributor. We’re always happy to hear from people interested in our products and we’re always ready to help you with your next project. You can find your nearest Quest distributor on the map below.
Contact Form
For general enquiries email Quest Directly using the enquiry form below.