DSP 45 K

4-Channel Power Amplifier with DSP

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DSP 45 K

4-Channel Power Amplifier with DSP


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Article number: LDDSP45KItem No. LDDSP45K

  • 4-channel power amplifier with DSP control
  • 4 x 1200 watts @ 4 and 2 ohms, 2 x 2400 watts bridged @ 4 ohms
  • 10 Hz - 22 kHz frequency response with 120 dB dynamic range
  • 24-bit/48kHz DSP with FIR and IIR filters, parametric EQ, crossover, delay, RMS and peak limiters
  • DC, overcurrent, thermal and short circuit protection, soft start, clip and SMPS overload limiters
  • Dual temperature-controlled fans
  • Power factor correction (PFC)
  • Menu driven 4-line display with rotary encoder and security lock
  • Includes control and monitoring software and LD Systems® Loudspeaker Preset Library
More Features

Description

Features
  • 4-channel power amplifier with DSP control
  • 4 x 1200 watts @ 4 and 2 ohms, 2 x 2400 watts bridged @ 4 ohms
  • 10 Hz - 22 kHz frequency response with 120 dB dynamic range
  • 24-bit/48kHz DSP with FIR and IIR filters, parametric EQ, crossover, delay, RMS and peak limiters
  • DC, overcurrent, thermal and short circuit protection, soft start, clip and SMPS overload limiters
  • Dual temperature-controlled fans
  • Power factor correction (PFC)
  • Menu driven 4-line display with rotary encoder and security lock
  • Includes control and monitoring software and LD Systems® Loudspeaker Preset Library

The LD Systems® DSP 45 K is a professional 4-channel power amplifier with extensive DSP control. Designed for demanding large-scale sound reinforcement and concert-quality performance, it delivers a massive 1,200 watts per channel and 2 x 2,400 watts bridged. The high-efficiency Class H topology and switch mode power supply with power factor correction (PFC) provide a wide dynamic range and excellent transient response.

The DSP 45 K features comprehensive protection circuitry including power-up, DC, overcurrent, thermal and short circuit protection plus current and clip limiters to prevent SMPS overload and loudspeaker damage. Together with a pair of temperature controlled fans, they ensure exceptional reliability in the most demanding applications. The 24-bit DSP allows precise control with FIR and IIR filters, parametric EQ, crossover, delay, RMS and peak limiter functions. User configurable loudspeaker presets with password protection enable fast setup

The DSP 45 K is housed in a dual rack space all-steel chassis and weighs just 7 kg. It provides balanced Neutrik® XLR inputs, speakON® output connectors plus USB and Ethernet ports. The front panel sports a menu driven 4-line display and rotary encoder with push button switch for easy configuration. For optimal speaker performance and safe operation the DSP 45 K comes with an LD Systems® loudspeaker preset library, and the included software enables computer control and monitoring.

Specifications

Product typePower Amplifiers
Type4-channel
Rated ouput power (1kHz @ 2 Ohms)4 x 1200 W
Rated ouput power (1kHz @ 4 Ohms)4 x 1200
Rated ouput power (1kHz @ 8 Ohms)4 x 675
Rated ouput power (1 kHz @ 4 Ohms, bridged)2 x 2400 W
Rated ouput power (1kHz @ 8 Ohms, bridged)2 x 1200 W
High Z 70Vrms / 100Vpeak4 x 1200
High Z 100Vrms / 140Vpeak2 x 2400
Output circuitryClass H
Frequency response10 - 22000
Total Harmonic Distortion (THD)< 0.05 % @ 1 kHz
Signal-to-noise ratio104 dB
Protection circuitssoft start, over-current, DC protection, RMS speaker limiter, Thermal protection, clip limiter, Short circuit, Multiband limiter
ControlsDirect access buttons, knob, Exit / lock button, On / off switch
IndicatorsLC display
Line inputs4
Line input connectorsNeutrik XLR
Line outputs4
Line output connectorsNeutrik XLR
Loudspeaker outputs4
Speaker output connectionsSpeakon
Cooling2 fans, temperature controlled
Maximum Ambient Temperature0 °C - 40 °C
Power supplySwitching power supply, 100 V AC - 240 V AC, 50 - 60 Hz
Relative Humidity< 80 %, not condensing
Power consumption @ full load1900 W
Width482 mm
Height89 mm
Depth320 mm
Features19" / 2 U, Active Power Factor Correction, DSP controlled

Downloads

User Manual
6.28 MB
INTERNATIONAL
REACh Declaration
Adam Hall GmbH|141 KB
INTERNATIONAL
Software
10.46 MB
EN
RoHS Confirmation
Adam Hall GmbH|203.79 KB
INTERNATIONAL
Loudspeaker Presets
665.07 KB
INTERNATIONAL
Catalogue / Brochure
Adam Hall Group Product Highlights Autumn/Winter 2025|6.63 MB
EN

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