MFA-8000 Bi-Polar Amplifier TECHNICAL NOTES & SPECIFICATIONS

ARCHITECTS SPECIFICATIONS Features:

MFA-8000 LED shall indicate excessive temperature. The power output devices shall • Turn-on Delay
The power amplifier, being of two channels, shall deliver a minimum be complementary bipolar transistors. • 5-Year Worry-Free Warranty
power of 750 watts RMS per channel into 8 ohm loads and 1200 watts • Bipolar Output Devices
RMS per channel into 4 ohm loads, or 1500 watts per channel into 2 ohm The amplifier shall weigh 61 lbs net and mount in a standard 19 inch rack • Class-A Full Complementary Front
loads with both channels operating. When switched into bridged-mono using three spaces (5.25” high). The power requirement shall be 110- End
mode, the amplifier it shall deliver at least 2400 watts into an 8 ohm load. 125VAC, 50-60-Hz. The power amplifier shall be an Ashly MFA-8000. • Modular Construction
The amplifier shall be immune to damage from shorted, open, or mis- • XLR, 1/4", and Barrier Strip inputs
matched loads. The amplifier shall have a gain of 38 dB per channel and • Stereo, Parallel Mono & Bridging
an input sensitivity of 1 Volt RMS for full rated output. Frequency
Modes
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
• LED Level meters and Status LEDs
105dB below full output and total harmonic distortion shall be less than • Stable Into Any Load
.025% below 1KHz. The amplifier shall have rear panel switching for paral- • Self Protecting Under Virtually All
lel mono and bridging modes and rear mounted level controls. The inputs Conditions
shall be of balanced bridging type with female XLR connectors as well as • Input Transformers Optionally
1/4” phone jacks and barrier strips. A three-color LED type indicator shall Available
be employed to show the power level of each channel and two speed forced • PowerCard Input Option Ready
air cooling shall be used. Each channel shall have a PROTECT LED which • Speakon and Binding Post Outputs
indicates an open relay due to short-circuit, ultrasonic, DC, or turn-on • High-efficiency 3-Step Power
delay. A LIMIT LED shall indicate any limiting action and a THERMAL
Supply
General Specifications MFA-8000 Amplifier Protection: Fuseless short-circuit protection,
OUTPUT POWER ultrasonic and RF protection,
(Per Channel, Both Driven at, 1KHz, 0.1% THD) advanced thermal protection
8 ohms: 750 Watts RMS Load Protection: Turn-on delay with level ramp-up,
4 ohm: 1200 Watts RMS DC fault protection, ultrasonic limit
2 ohm: 1500 Watts RMS ing, clip limiting
Cooling: Forced air with 2-speed fan
(BRIDGED MONO MODE) Indicators: 11 segment level meters with true
8 ohms: 2400 Watts RMS clipping red LED, Green Limit LED
4 ohm: 3000 Watts RMS indicates when electronic attenuator
is active. Yellow Therm LED
(Per Channel from 20Hz to 12KHz*, <.25% THD) indicates a higher than normal oper
8 ohm: 720 Watts RMS ating temperature. Red Protect LED
4 ohm: 1100 Watts RMS indicates when output relay is open.

Frequency Response: +/-0.2dB (20Hz - 20KHz) Power Requirement: 110-125VAC, 50-60Hz

+/-3dB (8Hz - 100KHz) (240V Available)
Total Harmonic Distortion: 0.025% (720 Watts into 8 ohms, 1.2 amps idle current draw,
20Hz - 1KHz increasing to <.25% at 12 amps maximum for typical stereo
12KHz operation into 4 ohm loads
Output Hum and Noise: -105dB from full output (20Hz - Size: 19”L x 5.25”H x 16.5”D
20KHz unweighted) Shipping Weight: 68 lbs
Damping Factor: >200, 8 ohm, 20Hz - 1KHz
Crosstalk -90dB (20Hz - 1KHz) *Protection circuits will prevent full output voltages above 12KHz
Input Sensitivity: 1 Vrms for full output
Voltage Gain: 80X (38dB) Specification conditions are:120VAC mains at 60Hz, 25° C
Input Impedance: 20K ohm balanced

Rear Panel MFA-8000

Applications:
Churches, Studios, Concerts, Dance/Night Clubs, PA Systems, Auditoriums, Lecture Halls, Sports Stadiums, Outdoor Festivals

Ashly manufactures a complete and comprehensive line of Graphic and Parametric Equalizers,
Electronic Crossovers, Power Amplifiers, Compressor-Limiters, Mixers, and
Amplifier Input Options. Please call, write or visit our web site for information on any of these Ashly Products.

Ashly Audio Inc., 847 Holt Road, Webster, NY 14580-9103, Toll Free (800) 828-6308, Telephone (585) 872-0010, FAX (585) 872-0739
Internet: http://www.ashly.com, email: info@ashly.com