MFA-8000
The power amplifier, being of two channels, shall deliver a minimum
power of 750 watts RMS per channel into 8 ohm loads and 1200 watts
RMS per channel into 4 ohm loads, or 1500 watts per channel into 2 ohm
loads with both channels operating. When switched into bridged-mono
mode, the amplifier it shall deliver at least 2400 watts into an 8 ohm load.
The amplifier shall be immune to damage from shorted, open, or mis-
matched loads. The amplifier shall have a gain of 38 dB per channel and
an input sensitivity of 1 Volt RMS for full rated output. Frequency
response shall be 20Hz to 20kHz +/- .2dB. It shall be stable into any load,
including pure capacitors and inductors. Hum and noise shall be at least
105dB below full output and total harmonic distortion shall be less than
.025% below 1KHz. The amplifier shall have rear panel switching for paral-
lel mono and bridging modes and rear mounted level controls. The inputs
shall be of balanced bridging type with female XLR connectors as well as
1/4 phone jacks and barrier strips. A three-color LED type indicator shall
be employed to show the power level of each channel and two speed forced
air cooling shall be used. Each channel shall have a PROTECT LED which
indicates an open relay due to short-circuit, ultrasonic, DC, or turn-on
delay. A LIMIT LED shall indicate any limiting action and a THERMAL
LED shall indicate excessive temperature. The power output devices shall
be complementary bipolar transistors.
The amplifier shall weigh 61 lbs net and mount in a standard 19 inch rack
using three spaces (5.25 high). The power requirement shall be 110-
125VAC, 50-60-Hz. The power amplifier shall be an Ashly MFA-8000.
TECHNICAL NOTES & SPECIFICATIONS
ARCHITECTS SPECIFICATIONS
MFA-8000 Bi-Polar Amplifier
Features:
Turn-on Delay
5-Year Worry-Free Warranty
Bipolar Output Devices
Class-A Full Complementary Front
End
Modular Construction
XLR, 1/4", and Barrier Strip inputs
Stereo, Parallel Mono & Bridging
Modes
LED Level meters and Status LEDs
Stable Into Any Load
Self Protecting Under Virtually All
Conditions
Input Transformers Optionally
Available
PowerCard Input Option Ready
Speakon and Binding Post Outputs
High-efficiency 3-Step Power
Supply
