Precision DSP Amplifier

Acoustic Technologies Blackbird 5K Precision DSP Amplifier integrates four channels of highly efficient Class D Amplification complete with comprehensive DSP, light weight Switch Mode Power Supplies and a fully featured network addressed control system to provide an economical 2RU power amplifier with unparalleled flexibility and output power.

Each of the four Class D amplifiers develop in excess of 1250 Watts RMS of sonically transparent amplification and are capable of driving 2 Ohm or 70/100 Volt Line loads. Amplifier pairs can be bridged to provide 2500 Watts RMS. The amplifier provides comprehensive protection for Over Current and Over Temperature operating conditions. The amplifier’s performance data is logged for the last 92 hours of operation and can be viewed via the PODWARE control software.

The Blackbird 5K utilises two totally independent Switch Mode Power Supplies designed to meet the specific requirements of the amplifier modules, eliminating many of the potential sources of noise and distortion. The power supplies feature intelligent mains voltage detection allowing global operation without reconfiguration. The amplifiers and power supplies are cooled by variable speed fans.

Each pair of the Blackbird 5K channels contains a fully featured 96kHz 24 Bit digital loudspeaker management and amplifier control system. A full complement of DSP capabilities are provided including crossover functions, equalisation, time delay and limiting. All DSP control parameters and amplifier status monitors are instantly accessible using a personal computer and the PODWARE control software which communicates with the amplifier via USB or the BvNET Interface. Networking multiple amplifiers and other devices which communicate via BvNET allows an entire audio system to be operated, optimised and monitored in real time from a centralised control location. In addition to remote monitoring, the Blackbird 5K front panel features multiple colour coded LED indicators for signal, status and protection functions.

The Blackbird 5K is a 19″ 2RU chassis weighing only 9Kg, making it the ideal choice for all touring applications. The amplifier is eminently suited for use in permanently installed sound reinforcement systems due to the unsurpassed power, flexibility, control and system monitoring capabilities.

Specifications

Audio
Input Impedance 10k Balanced
Max Input Level +20dBu
Frequency Response 20Hz – 20kHz ± 0.5dB into 4 Ohms
Distortion <0.05% (1kHz, -3dB output. 22KHz BW)
Protection Systems
Output overcurrent Initiall gain is reduced to maintain control
Persistant overcurrent causes shutdown
Over Temperature Limiters applied
Mains Brownout Automatic protection & recovery
Switch on Surge Soft-start current inrush limiting
DC on Output Immediate Shutdown – Cycle power to restart
Amplifiers
Type High efficiency Class D
Number of Channels Four
Output Power RMS program, 20Hz – 20kHz all channels driven
Per Channel 1250W into 2 Ohms
800W into 4 Ohms
450W into 8 Ohms
Per Bridged Pair 2500W into 4 Ohms
1600W into 8 Ohms
900W into 16 Ohms
Slew Rate >80V/us
Damping factor 120 ref 8 Ohms
Efficiency >90% typical
Physical
Dimensions 482mm (W) x 88mm (H) x 395mm (D) Including Handles
Weight 9 Kgs
Power Supplies
Type High Current Switchmode
Number Two, fully independent
Efficiency >90% typical
Input Voltage 115V / 230V nominal ± 10%
Input Voltage Selection Automatic
Mains Frequency Range 45Hz – 65Hz
Other Features Automatic soft-start
Automatic brownout recovery
Remote shutdown
Automatic over voltage protection
Accessories
Optional Airflow filtering kit
Rear rack support kit
Thermal
Cooling One variable speed fan per pair of channels and an additional variable speed fan per amplifier.
Airflow is from the rear to the front.
Indicator and Controls
Per Channel Sig, Limit -6dB, Limit
Per Channel Pair Power, Protect, Bridge,< br/> Network, DSP Active
Controls per Channel Pair Front Panel – User DSP Defeat, Power Switch
Rear Panel – Two Contact Closure Inputs, Shutdown Input
Monitoring Facilities Input Signal Level
Output Signal Level
Output Current Level
Temperature
Limiter Operation
Protection System Operation
Driver Impedance
Connections
Mains Neutrik Powercon®
Audio input 3 pin Female XLR
Audio link 3 Pin Male XLR
Output Neutrik NL4 Speakon®
USB Type B
Network (Input & Link) 2x RJ45 Socket
Auxiliary (Input & Link) 2x RJ45 Socket