Powerflex-6250 Six Channel Amplifier
The power amplifier shall be a multichannel unit consisting of six
independent channels. Each amplifier shall be able to deliver 150
watts into 8 ohms, or 250 watts into 4 ohms. In addition, bridged
pairs shall be able to output 500 watts each into 8 ohms. Also,
when pairs are bridged, the unit shall provide 500 watts capable
of driving a 70 volt system without the use of external trans-
formers.
The amplifier shall have a gain of 30.1dB and an input sensitivity
of 1.05 Volts RMS for full rated output. Frequency response shall
be 20Hz to 20kHz +/- 0.5dB at 8 ohms. The unit shall be stable
into any load, including pure capacitors and inductors. Hum and
noise shall be at least 100dB below full output (A-weighted) and
SMPTE intermodulation distortion shall be less than 0.2%. Total
Harmonic Distortion (20Hz - 20KHz at 8 ohms) shall be less than
0.2%.
Each amplifier channel shall be supplied with an input attenuator
located on the rear panel input module. Each pair of inputs shall
have a bypassable high pass filter of 12dB/octave at 50Hz, a
switch to select stereo or mono mode and a switch to select dual
or bridge mode. There shall be an input ground switch located on
the input module to select chassis or floating ground operation.
The inputs shall be active balanced design, with an impedance of
10K ohm accessible with combination XLR - 1/4” jacks and euro-
bloc connectors. The outputs shall be terminated with a 5-way
binding post connector.
Individual channel indicators for protect, thermal overload, clip
and signal present shall be LEDs located on the front panel.
Cooling shall be supplied by a temperature sensitive three-speed
fan drawing air from the front of the unit and exiting through the
rear.
The unit shall be capable of operation by means of its own built-
in power supply connected to 110 - 125V AC, 220 - 250V AC, 50/
60Hz. Dimensions of the unit shall be 19”L X 5.25”H X 16.5”D.
The chassis shall be constructed from steel with an aluminum
face panel and weigh 45lbs.
The unit shall be the Powerflex™ 6250 manufactured by Ashly
Audio, Inc.
• Six Channel Amplifier - 150W/Ch @
8 Ohms, 250W/Ch @ 4 Ohms
• 25V and 70V System Applications
• Revolutionary High-Speed Switched
MosFet Output Design with Spread
Spectrum Switching Technology
• Superior Efficiency Over
Conventional Linear Amplifiers
• Input Module with Level Controls
Located on Rear Panel
• Switchable HPF on Inputs
• XLR - 1/4”, Eurobloc Input
Connections
• 5-Way Binding Post Output
Connections
• Individual Channel Front Panel Level
and Protection Indicators
• Multiple Protection Circuits
• Exceptional Audio Fidelity
• Bridgeable Channel Pairs
• Internal Modular Design
• Quiet, Three-Speed Fan
• Front In/Rear Out Channeled Air-
Flow
• Five Year Warranty
Technical Notes & Specifications
Powerflex
TM
6250 Six Channel Power Amplifier
Architects Speci
fi
cations
