HDSP-0.4DDA

Quantity channel
4 CH, class-D latest generation

Power output 4 Ω
3,200 W (4 x 800 W)

Power output 8 Ω
1,800 W (4 x 450 W)

Power output 16 Ω
800 W (4 x 200 W)

Damping factor
> 1000 / 8 Ω, 1 kHz

Frequency responce
20 - 20,000 Hz

THD+N
< 0.05 % (20 - 20,000 Hz with 8 Ω)

Signal-to-noise ratio
> 118 dB (20 - 20,000 Hz with 8 Ω)

Voltage
Intelligent PFC wide-range power supply with soft start and automatic voltage selection:
85 - 135 V = 110 / 115 / 120 V Betrieb, 190 - 265 V = 220 / 230 / 240 V Betrieb, 50/60 Hz

Powerconnector
1 x 16 A powerCON TRUE1 IN

Signal connection digital
2 x Dante (Digital Audio Network Through Ethernet)
2 x Digital AES/EBU, AES67

Signal connection analog
4 x XLR female/male

Speaker Connections
4 x Speakon

Cooling
2 x temperature-controlled EBM-Papst low noise axial fan, air flow front to back

Protection
Input limiter, peak limiter
Start-up current limiting (soft start)
Protection circuit on and off transients
Under and over-voltage protection
DC-protection of outputs
Temperature monitoring of the heatsink and transistors

Realtime software-monitoring
Loudspeaker impedance measuring from each output channel (line-control)
Temperature measuring from each ampmodule
Real time meterbridge on PC per channel
Real time access for configuration on each channel
Speaker group building for access multiple speakers with one command

DSP sampling
64 bit, 96 kHz sample rate

DSP preset memory quantity
2 x 120 preset locations, including 2 different presets assignable simultaneously

Latency
0 - max. 500 microsecond

Dynamic range input
120 dB

Nominal input level
+ 6 dBu

Maximum input level
+ 23 dBu

Limiter
Two per way, in each input and output

Filter
10 parametric filter each in- and output, use as Bell, Shelving, Notch, or Allpass filter

Long delay section
0 - 800 ms (max. 275 m delay) in each input

Short delay section
0 up to 17 ms (max. 6 m delay) per output for time alignment between the acoustic centers

Phase adjustment
0 - 180°

X-Over
Butterworth, Bessel, Linkwitz-Riley Filter

Software
Bi-directional realtime VA-WLAN-remote network, software for PC and MAC

Manual hand operation
with 4 x button and 2 x digital encoder-wheel in the internal menu navigation, function lockable

Display
2 x LED display
2 x LCD display with software dimmable and switchable

Body housing
19"/2 HE, 450 mm deep, strong black colored aluminum housing

Weight
5.2 kg

The HDSP-0.4DDA is a 4-channel DSP amplifier with dual technology and has an output power of 3.200 W into 4 Ω.

DDA stands for a new generation of DSP and input boards that can process a variety of signals: DANTE, Digital AES/EBU, AES67 and analog inputs. The signals can be looped further.

The Voice-Acoustic HDSP amplifier series has been developed with the most demanding requirements in audio quality and reliability in mind. With the high number of output channels, for the first time, it has become possible to separately filter bi and tri amping with the HDSP series cost effectively. The intelligent wide-range switching power supply automatically detects the AC input values making it possible to use anywhere in the world.

The integrated loudspeaker management systems (DSP – digital signaling processor) work with a 64 bit/96 kHz sampling rate in audiophile sound quality. Premium converters offer a 120 db dynamic range and can process an input level of up to + 23 dBu. This amplifier series is specked out with the factory settings for the speakers, limiter and time alignment for the output channels. Additionally each input channel boasts 10 parametric filters (Bell, High Shelf, Low Shelf, Notch, Allpass), compressors, flexible routing, phase settings, a lengthy delay section for delays up to 275 meters, and an input limiter. The series is also equipped with enough memory to add your own presets for the use of loudspeakers from other manufacturers. The amplifiers are likewise available without Voice-Acoustic factory presets.

The LCD display on the front side enables all functions to be manually accessed from a digital rotary encoder and buttons. Our Voice-Acoustic’s VA-WLAN remote software for PC, Mac or App offers even more convenient access to these controls. This software makes it possible to link, remotely operate and monitor up to 128 individual HDSP amplifier units or self-powered loudspeakers in one common network. Linking is accomplished fully automatically via IP-address. The connection operates bi-directionally in real-time and provides a diverse scope of system feedback (headroom, temperature, and impedance measurement).

One major advantage of Voice-Acoustic power amplifiers is their modular capability. Multiples of highly effective state-of-the-art Class-D modules are fitted with separate power supplies and separate DSP boards to endure redundancy and guarantee supreme operational safety. This easy-to-service modular style allows for simple and fast exchange of components by any electrical assistant in a short time. Compared to conventional multi-channel power amplifiers, which have to be powered with one power supply, the HDSP amplifier’s modular capabilities guarantee maximum performance and lots of headroom – even in a deep base range without simultaneously influencing other channels.

The electronics have been mounted upside-down in the super sturdy 19" aluminum housing. Any dust particles will float to the floor of the box and not lay down on the platinum. All 2HE power amplifiers have identical housing and back cover plates.