Pulz DSS24 Digital Speaker Management System

  • Product Code: DSS24
  • Pulz DSS24 Digital Speaker Management System

The Pulz DSS24 is a 2 input 4 output Speaker Management Processor. The 2 input levels are displayed by rows of 6 level leds + 1 clip led, The 4 output levels are displayed by rows of 5 level leds + 1 clip led + 1 Limiter led. 

The unit has 2 Analog Inputs, a stereo Digital Input, and 4 Analog Outputs. Each input has 5 parametric equalizers with adjustable Q and Frequency. Each output has 7 parametric equalizers, a High Pass and a Low Pass section of filters with slopes up to 24dB/Oct. Each Output also has the facility of activating Limiters which work on the signal RMS value. 

Linking functions between inputs and linking functions between outputs are available. A function has been provided to lock the parameters of the system. This feature is useful for fixed installations. 

The DSS24 comes with a PC based software for remote control. This software can be used to connect multiple units at the same time.


  • XLR Balanced Inputs and Outputs.
  • 2 Analog inputs and 4 Analog Outputs.
  • Stereo Digital Input.
  • LCD Backlit Display for easy operation in Live applications.
  • 24dB/Octave adjustable High Pass and Low Pass Filters
  • Parametric Equalizers.
  • Limiters with adjustable Threshold, Attack Time and Release Time.
  • Delay adjustable upto 850ms
Analog Input 2 x Female XLR electronically balanced
Analog Output 4 x Male XLR electronically balanced
Digital Input 1 SPDIF; Gain 0dBu
Minimum Load 150 ohm
THD + N 0.001% at 1kHz
S/N >110dBA
Frequency Response 20Hz - 20kHz; -0.5dBu at 20Hz and 20kHz
AD & DA Converters 1 x AK5388 24 bit; 3 x AK4396 24 bit
DSP & Processing
DSP Engine 24 bit(data) x 96 bit(coeff.)
DSP Resolution 24 x 32 bit for filtering process; 96 bits resolution on intermediate computation results
Input & Output Gain From -18dB to +12dB by 0.1dBu resolution steps
Filter Type Bell, Shelving, HP/LP, All Pass, Band Pass, Notch Filter
Filter Gain From -15dBu up to +15dBu by 0.5dBu resolution steps
Center Frequency From 20Hz up to 20kHz with 1Hz resolution steps
Filter Q/BW Q from 0.4 up to 128
Crossover Section HPF/LPF Butterworth 6/12/18/24/36/48dB per octave; Bessel 12/24dB per octave; Linkwitz-Riley 12/24/36dB per octave
Internal Noise Generator White/Pink Noise; Level from -40dBu to 0dBu
Input All pass Selectable as bypass, 1st and 2nd order
Input Noise Gate Threshold from -80dBu up to -50dBu; Attack time from 1ms up to 1000ms; Release time from 10ms up to 1000ms
Input RMS Limiter Threshold from 20dBu up to -10dBu; Ratio: 2:1~32:1; Knee: 0~100%; Makeup from -12dBu to +12dBu; Attack time from 5ms up to 200ms; Release time from 0.1sec up to 3sec
Peak Limiter Threshold from 20dBu up to -10dBu; Attack time from 1ms up to 900ms; Release time from 0.1sec up to 5sec
Headroom on Internal Overflow Processes - 12 dB; Routing - nothing, In A, In B, In A+B
Delay 480 ms 10.4us increment/decrement steps for each input, 270ms 10.4us increment/decrement steps for each output
Ground noise -89 dBu
Mains Voltage 220-240V AC, 50Hz - 40W
Mains Fuse 250V, 20mm, 250mA Type T
Device Presets 32 User Presets
Front Panel 2x24 character LCD display with green LED backlight; 7-LED meter per input channel -20dBu to +15dBu, clip; 7-LED meter per output channel -15dBu to +15dBu, clip and limiter mode; Blue LED (Edit) per channel; Red LED (Mute) per channel; NAV/PM1 Rotary encoder push button switch; PM2, PM3, ENTER, ESC, UTILITY push button switches; EDIT/MUTE push button per channel
Rear Panel 2 x XLR female connector (Input); 4 x XLR male connector (Output); 1 x RCA connector (SPDIF input); 1 x XLR female connector for RS485 (Input); 1 x XLR male connector for RS485 (Output); USB type A connector; 2 x Ground-lift toggle switch; IEC C13 16A connector; Power on/off switch
Dimensions & Packaging
Dimensions (H X W X D) W 19” x H 1.75" x D 10.5"
Net Weight 4 Kgs
Packed Weight 5 Kgs