D6 amplifier

Architects' and engineers' specification
The amplifier shall be dual channel incorporating digital signal processors (DSP) to provide loudspeaker specific configurations and functions for d&b passive loudspeakers. It will be equipped with digital and analog signal inputs as well as link outputs, remote control and monitoring capabilities and sophisticated protection circuits.
It will have a temperature and signal controlled fan to cool the internal assemblies. A user definable 4-band parametric equalizer, and signal delay capability of up to 340 ms shall be incorporated for independent application to each channel. 
It will contain a signal generator offering pink noise or sine wave program. 
Load monitoring and System check functions will be included to ascertain the status of the loudspeaker impedance. Load monitoring shall be included to allow impedance monitoring to determine the status of an LF or HF driver in systems with multiple elements, even if these are crossed over passively. 
Load and Input Monitoring shall be suitable for use in applications compliant to EN 60849/IEC 60849 �Sound Systems for Emergency Purposes�. 
User interface shall be via a Liquid Crystal Display (LCD) in conjunction with a digital rotary encoder and via the d&b Remote network.


Power supply:
The power supply shall be autoranging switched mode for use with 100/115/200/230 V, 50 - 60 Hz. supplies fitted with a mains inrush current limiter, self-resetting over temperature and overvoltage protection.

Power amplifier:
The power amplifier channels shall have a switch on delay, DC protection, self-resetting over temperature protection, output short circuit and overload protection.

Rated output power (THD+N < 0.1%):
2 x 350 W into 8 ohms, both channels driven
2 x 600 W into 4 ohms, both channels driven

Damping factor: (20 Hz - 1 kHz, Ref. 4 Ohm): >90
S/N ratio (unweighted, RMS): > 105 dBr
Output connectors: 2 x NL4

Digital Signal Processing:
Sampling Rate: 96 kHz / 27 Bit ADC / 27 Bit DAC
Analog input latency: 0.3 ms (including conversion)
Delay: up to 340 ms (100 m/328 ft), 
EQ: 4-band EQ with PEQ or Notch function
Frequency generator: pink noise and sine wave
Operator input inhibit/password protection

Analog inputs: 2 x XLR 3-pol. female, input impedance 44 kOhms, electronically balanced
Analog Link outputs: 2 x XLR 3-pol. male
Digital input (AES/EBU - AES 3): 1 x XLR 3-pol. female, input impedance 110 ohms, transformer balanced
Sampling: 48/96 kHz, 2Ch/n
Synchronisation: Word-Sync: PLL-locked to source (slave-mode)
Digital Link: 1 x XLR 3-pol. male, signal buffering (refresh), power fail bypass relay

Level control (input sensitivity): � 57.5 dB ... +6 dB with 0.5 dB detents.

Dimensions: (HxWxD): 2 RU x 19" x 353 mm / 13.9"
Weight: 8 kg / 17,6 lb

Manufacturer: d&b audiotechnik GmbH & Co. KG.