Features & Applications
Features
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Applications
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Detailed Description FFA-8004
FFA-8004 is a four-channel amplifier whose standard-model datasheet specifies 1000 W per channel into 8 Ω and 2000 W per channel into 4 Ω. This page describes that amplifier platform. The manufacturer provides separate documents for HD and DSP versions, so their processing and network features are treated as different model specifications.
Amplification and power supply
The amplifier uses FFA Class D PWM circuitry and a high-current switch-mode supply designed for sustained power delivery. Power-supply soft start, clip limiting, output-DC protection and protection against short circuits, current overload and excessive temperature support operation within the published ratings.
Four balanced female XLR inputs are accompanied by four parallel male XLR links. Each channel has a speakON loudspeaker output, with the additional pins on channels 1 and 3 supporting compatible four-core bi-amp wiring. Forty-position level controls, a power switch and signal, clip and protection indicators provide the local operating interface.
Operation and installation
The tour-grade aluminium enclosure occupies 2U, weighs 10 kg and uses rear-to-front airflow from an 80 mm variable-speed fan. The archived model document identifies stage monitors, bass and full-range reinforcement, theatres, night venues, AV, cinema and temporary festival installations as suitable applications. The standard-model datasheet remains the reference for this version’s electrical and mechanical specifications.
Explore Full Fat Audio amplifiers at B-Star and the Full Fat Audio range. Manufacturer references: Manufacturer brochure / overview (PDF page 1), Manufacturer datasheet (PDF page 2), FFA amplifier user manual.
Technical Specifications FFA-8004
AMPLIFIER |
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| OUTPUT CHANNELS | 4 |
| POWER PER CHANNEL AT 8 Ω | 1000 W |
| POWER PER CHANNEL AT 4 Ω | 2000 W |
| TOTAL RATED OUTPUT AT 4 Ω | 4 × 2000 W |
| VOLTAGE GAIN | 32 dB |
| THD+N | Typical 0.03 at 4 Ω, 1 kHz; the model datasheet does not print the unit |
| FREQUENCY RESPONSE | 20 Hz–20 kHz, ±0.5 dB |
| OUTPUT STAGE | FFA Class D PWM |
| POWER SUPPLY | High-current switch-mode supply with soft start |
| LOUDSPEAKER PROTECTION | DC at output; clip limiting |
| AMPLIFIER PROTECTION | Short circuit, current overload, thermal shutdown and high-frequency stability circuit |
CONNECTIONS |
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| ANALOGUE INPUTS | 4 × balanced Neutrik female XLR |
| INPUT WIRING | Pin 1: ground; pin 2: hot (+); pin 3: cold (−) |
| ANALOGUE LINKS | 4 × male XLR parallel signal-through connections |
| LOUDSPEAKER OUTPUTS | Neutrik speakON per channel |
| BI-AMP WIRING | Channels 1 and 3 also use pins 2+/2− for four-core loudspeaker wiring |
| MAINS CONNECTOR | 1 × Neutrik 20 A powerCON |
CONTROLS AND INDICATORS |
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| LEVEL CONTROLS | 40-position potentiometer per channel |
| POWER CONTROL | Power-on switch |
| SIGNAL INDICATOR | Green at −20 dB |
| LEVEL INDICATOR | Yellow at −3 dB |
| CLIP INDICATOR | Red |
| PROTECTION INDICATOR | Red for overcurrent, low AC mains or the 3-second power-up mute |
MAINS POWER AND COOLING |
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| MAINS REQUIREMENT (MODEL SOURCE) | 1 × 16 A, 230 V AC circuit; published operating range 185–230 V AC; 120 V version configured at the factory |
| COOLING | High-airflow 80 mm fan with signal-proportional speed control |
| AIRFLOW | Rear to front |
MECHANICAL |
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| ENCLOSURE | Tour-grade aluminium chassis |
| RACK FORMAT | 19-inch rack; 2U |
| DIMENSIONS H × W × D | 88 × 483 × 510 mm |
| DEPTH REFERENCE | Includes integral rear rack support |
| WEIGHT | 10 kg |
The standard-model datasheet prints a THD+N value without a unit. The value is retained as published. This specification does not describe the HD or DSP variants.
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