HILL AUDIO QPA2800 เพาเวอร์แอมป์ 4-แชนแนล กำลังขยาย 4x450 วัตต์ที่ 4 โอหม์, 4x280 วัตต์ที่ 8 โอหม์,Class AB
The QPA-2800 follows contractor requirements for a compact, powerful and easy-to-handle 4-channel amplifier to drive multichannel low-impedance loads. Built on the proven LPA series’ technology, this amplifier basically comprises of two LPA-1400 in one case. Each pair of channels can be run in stereo, bridge or parallel mono mode.
A newly designed high-CMRR input circuit proves useful where source and amplifier are far apart. The LPA-based hybrid approach to amplification, using proprietary digital control of limiters and filters while retaining a purely analogue signal path, gives high dynamic reserves without compromising tonal purity.
Proven linear power supply technology yields predictability at any power level. Two large 3 colour LCD displays clearly indicate the status at any time, and are legible from long distances. Sources can be connected via Combo input sockets or 3.5mm Phoenix terminals, and loads can be connected both via Speakon and via terminal strips.
Features
- Linear quadruple amplifier, 2+2 dual block design
- Class AB bipolar topology, 2Ω stable
- Dual stereo, parallel mono and bridge operation modes
- Toroidal transformer
- Temperature-controlled dual fan cooling
- Two 71-segment 3-color LCD displays with level meter, temperature readout and status indication
- Digitally controlled limiter and input high-pass filters
- Ultra-high CMRR input circuit
- Combo & Phoenix-compatible input sockets
- Speakon-compatible & terminal strip outputs
- PowerCon AC input with resettable circuit breaker
- Front-detachable air ventilation filter frames
- Full metal case with detachable rack ears
- CE/ROHS compliant
Specifications
- Power, dual stereo (RMS): 4×280/450/700W @ 8/4/2 Ohms
- Power, dual bridged (RMS): 2×900/1400W @ 8/4 Ohms
- Frequency response: 20Hz-20kHz +/- 1dB
- THD < 0.03%
- Damping factor > 300
- Dimensions: 483x88x425mm WxHxD
- Weight 24.2 kg
