Q. What characteristics of our products are superior over our competitors?

A. High Signal-To-Noise Ratio, low Distortion, great Sonic Quality, intuiitive Panel and Software controls.

A. We use the best and the most recent A/D, D/A and DSP in the semiconductor market. We put the potential design-in IC's into critical tests before actually occupying them into our products. We carefully select each component to make sure it fits into our high-end destination. From circuit board layout to DSP algorithms optimization, all processes are done with serious thoughts and detailed engineering. Hence, the outcome is a series of uncompromising products suitable for high-end professional audio market at a reasonable price.

A. There is a Gain/Menu button for each channel on the front panel. By pressing the button, the rotary wheel control s the level of the corresponding channel directly. By pressing Menu or Cursor up/down, other parameters of the channel can be controlled. On top of that, you can link multiple channels to control the same parameter for all selected channels simultaneously. This saves a lot of time in programming the unit. The 4 lines x 26 characters display shows all essential parameters on one screen instead of scrolling through numerous menu screens (except for DCP-3060, which is 2 lines x 16 characters).

Q. What outstanding features are integrated to the XConsole software?

A. Firstly, the large graphical screen gives accurate and clear indication of the frequency response for each output. In-Gain, In-EQ, Out-Gain, Out-EQ and Crossover section can be viewed individually or in any combination. Faders can be dragged by a mouse, or the up/down buttons at the top/bottom of the faders. Text input for the desired values is also available. For EQ and Signal (Delay, Crossover, Limiter), pop-up windows are provided. On top of the mentioned editing method, on-screen editing is also provided. By using the mouse, the EQ and Crossover can be controlled graphically! There are 256 groups of Links, so it is very easy to control 2x2, 2x3, 2x4 configurations by only setting up once without duplication!

Q. How do I set FIR filters?

A. For FIR filters, the higher the taps, the higher the slope in dB for the same frequency, or the lower frequency the FIR can handle for the same slope. Generally speaking, higher frequencies require smaller number of taps, and lower frequencies require higher number of taps.


For good steepness for FIR crossovers:

# of Taps               Minimum Freq (Hz)

50                          4800
100                        2400
150                        1600
200                        1300
250                        1000
300                        850
350                        700
400                        625
450                        550
500                        500
550                        450
600                        425
650                        400
700                        390
750                        385
800                        340
850                        310
900                        285
950                        275
1000                      265
1050                      250
1100                      230
1150                      220
1200                      210

FIR is much steeper than conventional IIR. The stopband is about 100dB below the crossover point. The slope is not linear. A lot of information on FIR filters is available on internet. One thing to keep note is that the higher the number of taps, the longer the propagation delay required for the filter. The delay is calaculated as 1/96 * #of taps / 2 ms. For example, a 600 taps filter induces 3.125ms delay. The XD is a smart device which compensates the delay required for all channels based on the highest FIR filter delay in a particular channel.

Q. How do I find the USB Port?

A. For Windows XP:
- Click Start > Settings > Control Panel
- Double click System
- Select Hardware Tab
- Click Device Manager
- Click Ports
- Under Ports, you should see the USB port and the COM port number

In XConsole v2.00, the available ports are shown in the Setup - Port Connection menu. So the above procedure can be neglected.