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QDC42.DSP
Eight Channel Amplifier
The Acoustic Technologies QDC42.dsp is an elegantly designed eight channel audio amplifier featuring extensive fully integrated digital signal processing systems on board. The QDC42’s amplifiers produce 40 Watts into 4 Ohm Loads, are highly linear, unconditionally stable and feature extensive on-chip thermal management & protection circuitry.
The DSPB23 Digital Signal Processing System (DSP) offers comprehensive audio processing capabilities. Fully featured Equalisation, Crossover, Gain, Delay and Dynamics Controls are provided. A PC based graphical user interface provides a familiar DSP programming environment.
The QDC42.dsp is a highly refined system building block, intended for use in professional audio applications including :
* Courts of Law
* Public Transportation Terminals such as:
- Airports
Bus Terminals &
Railway Stations
* Luxury Home Audio Distribution Systems
* Supermarkets, Shopping Centres
* Conference Centres
* Corporate Board Rooms
Such systems will generally employ multiple amplifiers within the overall system. With this in mind the QDC42 is convection cooled, eliminating the noise, maintenance and reliability issues associated with in-built cooling fans.
In Summary: The QDC42.dsp integrated digital system processor amplifier offers superb audio performance with extensive configuration capabilities in a footprint specifically engineered to meet the complex requirements encountered within large scale installations.
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Download hi-res image: Front |
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Download hi-res image: Rear |
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Download QDC42.dsp Information Sheet |
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Download QDC42.dsp Owners Manual |
Click the image above to view a slideshow of images
Acoustic Technologies DSPB23 Graphical User Interface Software provides complete control of the DSP System embedded within the QDC42.dsp Multi Channel Amplifier.
CLICK HERE for more information and to download the DSPB23 GUI Software
Specifications
| Number of Channels | 4 Input Channels - 8 Output Channels |
| Output Power per Channel (See Note 1) | 25 Watts RMS @ 1kHz - 8 Ohms 40 Watts RMS @ 1kHz - 4 Ohms |
| Frequency Response (See Note 2) | 10 Hz - 22 kHz +0dB, -3 dB |
| Input Sensitivity | 0.755 Volts RMS for 25 Watts into 8 Ohms |
| Input Program Impedance | 16k Ohms Balanced |
| Load Impedance | 4 Ohms to 16 Ohms |
| Damping Factor | Greater than 100:1 (Referenced to 8Ohms @ 1 kHz) |
| Signal to Noise Ratio (SNR) | Greater then 85dB |
| Audio Input Connector | Phoenix Style Screw Terminal Plug (Supplied) |
| Audio Output Connector | Phoenix Style Screw Terminal Plug (Supplied) |
| Mains Connector and Fuse | IES Mains Inlet / Fuse Holder 3 Amp M205 Ceramic Fuse |
| RS232 Programming Connector | Female DB9 |
| User Interface | 16 Character x 2 Line LCD Display with Backlight Recessed Push Button for Menu Selection Custom Software for DSP Programming |
| Power Requirements | 240 Volts AC @ 2 Amps |
| Dimensions | Standard 19" x 3.5" (2RU) Rack Mount 345mm Deep excluding connectors |
| Weight | 11.2 Kg Net 13.2 Kg Shipping |
| Specifications - Digital Signal Processing | |
| Number of DSPB23 Systems | 4x Dual Channel Processors |
| Sample Rate | 48kHz - 256 x Oversampling |
| Word Size | 24 Bit |
| Internal Processing | 48 Bits double precision floating point |
| Latency | 0.833 mSec |
| Dynamic Range | 105dB |
| Functions - DSPB23 System | |
| Parametric Equalisation | 7x PEQ's/Channel - 2nd Order Response Parametric Constant Q, Parametric Adaptive Q, Lo & Hi Shelf, LP Butterworth, HP Butterworth, Band Pass, Stop Band, All Pass 1, All Pass 2, Low Pass Q, High Pass Q, IIR Coefficients, Bypass |
| Crossover | 1x LPF + 1x HPF - 2nd Order Response Butterworth, Linkwitz-Riley, Bessel, Bypass Can be configured to provide 1x LPF or 1x HPF 4th Order |
| Gain | Channel Gain, Phase Invert and Mute |
| Output Delay | 0.00mSecs - 3.42mSec in 0.02mSec Increments / Channel |
| Dynamics | Compression or Limiting and Noise Gate / Channel Threshold / Limit Ratio, Knee & Noise Gate Level |
| User Interface | Graphical User Interface Software for a PC or Laptop providing on-screen control panels for all DSPB23 Functions. |
1) All power measurements are conducted according to the IHF202A Standard |
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Acoustic Technologies reserve the right to alter or amend the QDC42.dsp, without prior warning
in the interests of product improvement.
Professional