DCN22PRO is a high performance digital crossover filter with equalization and delay. It features 2 balanced analogue inputs with peak clip limiter and 2 single-ended analogue outputs. The two channels also has an peak limiter on each output in the digital domain and the threshold is setup in the software. The usage of very high performance Burr-Brown converters gives DCN22PRO crystal clear sound and very low noise floor. The sample rate is 96 kHz to extend bandwidth and have low order analogue low pass output filtering. The resolution of converters is 24 bit and the internal signal processor resolution is 76 bit. The signal processor will be configured as 2 output channels of 60 IIR filters each and 2 input channels with 20 IIR filters each for filtering and equalization.

The circuit board is a high quality 4 layer type which prevents noise and hum. The layout features a lot of decoupling very close to all active components.

DCN22PRO requires only +/- 12-15V power supply and onboard regulaters will produce the nessecary 3,3V and 5V. The DCN22PRO module will load the positive and negative supply equally which ensures perfect operation with most power SMPS's auxiliary +/-12-15V supplies - like B&O ICEpower, PowerSoft, ColdAmp and Hypex.

The XOverWizard II software is a graphical tool to manipulate with inputs, outputs, gain, crossover frequencies, crossover slopes, equalization and delay. The software has a very significant feature: The ability to import a text file containing measured driver data of frequency, sound pressure level and phase. With these data the XOverWizard II software are able to display frequency response and more, while design are in progress. Compared to this method the “old” trial and error method seems obsolete. The software comes in two versions: A standard as described above and a special which include measurement system and optimizer. More details at the XOverWizard II page.
Please notice: The software will have to be bought seperately including the USB Dongle-key - Prices

• Resolution 24bit
• Sample rate 96kHz
• Total processing power: 160 biquads
• S/N-ratio: >110dB
• 2 balanced analogue inputs
• 2 single-ended outputs
• Max. input voltage 1Vpp - 0dB
• Very Fast Peak Analogue Input Clip Limiter
• Daul slope output limiter in the digital domain
• Frequency response: 5-48kHz (-3dB)
• Latency input-output about 1ms
• Optical isolated USB interface
• Max. output voltage 12Vpp - 0dB
• Designed for implementation in active PRO loudspeakers
• 4 selectable setups for easy adaption to application
• Dual Signal present indication LED
• Dual Input Clip indication LED
• Mute control option via opto-coupler
• Program valid LED indicator
• Weight: app. 45g
• Overall dimensions: 100mm x 100mm x 10mm