DIGITAL AUDIO PROCESSOR
Digital audio processor
Basic parameters
D-44 / D-48
Analog input channel 4 x XLR balanced / 4 x XLR balanced
Analog output channel 4 x XLR balanced / 8x XLR balanced
THD+N distortion <0.003% @ 20Hz-42kHz 0dBu
S/N signal to noise ratio >106dBA
Frequency response 18Hz – 42kHz @ +-0.2dBu
Parametric equalizer input channel 8 selectable type filters
Output channel 8 optional type filters
Filter Type High/Low Chevron, Notch and Allpass Filters Optional
Filter gain range: -30dBu ~+15dBu, step accuracy: 0.1dBu
Input, output channel gain range: -40dB ~ +12dB, step accuracy: 0.1dB
Center frequency 1/48 octave step accuracy adjustment in the 20Hz~20kHz band
Filter Q value 0.267 ~ 92.302; high, low frame filter slope 6dB, 12dB optional
All-pass filter slope 12dB
Bandpass Filtering Butterworth, Bessel, Lingke-Sharp Slope:
12/18/24/48dB/Oct
Output peak pressure limit Threshold range: -20dBu ~ +20dBu,
Start-up time: 0.5ms ~ 50ms;
Release time: 0.01 sec to 1 sec
Compression ratio: 1.5:1 ~ unlimited
Input/output channel polarity Positive (0°) / Negative (180°) optional
Input/output channel mute ON/OFF optional
Delay Each input, the output channel has a delay of up to 1000msAdjustable
Program storage 20 user presets
Front panel 2x24 character LCD display
Input 5 lights display [-20dBu to +10dBu; clipping]
Output 5 lights display [-20dBu to +10dBu; clipping;
Limit], input, output light can be used to display input and output
Out level or display overload channel red LED light
Tone states PM1, PM2, PM3 are rotary encoder options
Menu switch UP, DONW, MENU, ENTER,
BYPASS, QUIT is a function button, up / backward / menu /
Confirm / pass / exit button
EDIT/MUTE buttons directly control the editing of functions on each channel
Type B USB interface
Rear panel 4 x XLR female connector (input)
8 x XLR male connector (output)
2 x XLR (one male and one female) RS485 connector (2 feet A, 3 Feet B, 1 suspension)
IEC C13 16A Rocker Switch Power Socket
AC power supply 90-260VAC (50/60Hz) 40W
Size 19" x 1.75" x 10" (482 x 44 x 250 mm) 1U
Net/gross weight 2.8kg/ 3.2kg