Ashly PF-670 Powerflex-Series Amplifiers

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Ashly PF-670 Powerflex-Series Amplifiers
Powerflex multi-channel amplifiers use a state of the art, high-speed MOSFET switching design with spread spectrum switching technology. This technology provides uncompromised power with exceptional efficiency and superior audio fidelity. As the name implies, Powerflex amplifiers satisfy many audio applications without compromising performance, all in a 3RU package weighing 46 lbs. Four models are available and are specifically designed to drive low impedance or 70 volt loads.

The Powerflex-4400 and -6250 shown on this page are four- and six-channel amplifiers designed for low impedance applications. Channels may be used as individual, independent power amplifiers with more than enough power to satisfy nominal audio applications, or they may be bridged in pairs for applications requiring higher power. Additionally, the Powerflex 6250 has been designed to drive six 25 volt or three independent 70 volt loads without the need of external transformers.

Each channel has a switchable high pass filter on each pair of inputs and level controls located on the rear panel. Input connections are XLR/1/4 and euroblock. Output connections are 5 -Way binding post. A quiet three-speed fan provides front to rear on-demand cooling.

Applications include: any multichannel power amplification application, monitor amp, small FOH system amp, paging systems, cinema systems, boardroom audio applications, multiple zone restaurant, bar, theme park or auditorium and DJ systems.


Power Output: Rated Per Channel, Two Channels Driven 70V: 300 Watts RMS 140V (Mono Bridged, 1 Channel: 600 Watts RMS Rated Per Channel, Six Channels Driven: 70V: 200 Watts RMS 140V (Mono Bridged, 3 channels): 400 Watts RMS

Input Impedance: 10K ohm balanced, 37K ohm unbalanced High Pass Filter: 80Hz, 12dB/octave, internally selectable THD: <0.5% (20Hz - 20KHz 200W 6-Channels Driven) IMD: <0.2% (SMPTE 60Hz/7KHz 4:1) Hum and Noise: < -100dB from full output (A-weighted) Full Power Input Sensitivity: 1.4V RMS (5.1dBu) Frequency Response: 0.5dB (20Hz-20kHz, full power) Voltage Gain: 50X (34.0dB) Crosstalk: < -75dB (20Hz - 1KHz) Signal Present Signal Sensitivity: 14mV RMS (-34.9dBu) Power Requirement: 110-125VAC, 220 - 250VAC, 50/60Hz Typical Idle Current: 120V: 0.9A 240V: 0.5A Current with Typical Audio Program Material (6 Channels Driven): 120V: 10A 240V: 5A Connections: Input: Eurobloc Output: Screw Terminal Indicators: Green signal-present LED and red clipping LED. Yellow "thermal"LED, Red "protect"LED Cooling: Forced Air, Thermal Sensitive 2-Speed Fan Front Inlet/Rear Outlet Dimensions: 19L x 5.25H x 16.5D Construction: All-Steel Chassis, Extruded Aluminum Front Panel Weight: 47 lbs. net, 54 lbs. shipping Specification conditions are: 120VAC mains at 60Hz, 25 C *Power Output (Maximum Average Power, 0.1% THD, 1KHz)

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