Item# LDDSP45K

Product Description


DSP 45 K

4-Channel Power Amplifier with DSP
Item 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

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.

Product type Power Amplifiers
Type 4-channel
Rated ouput power (1kHz @ 2 Ohms) 4 x 1200 W
Rated ouput power (1kHz @ 4 Ohms) 4 x 1200 W
Rated ouput power (1kHz @ 8 Ohms) 4 x 675 W
Rated ouput power (1kHz @ 4 Ohms, bridged) 2 x 2400 W
Rated ouput power (1kHz @ 8 Ohms, bridged) 2 x 1200 W
High Z 70Vrms / 100Vpeak 4 x 1200 W
High Z 100Vrms / 140Vpeak 2 x 2400 W
Output circuitry Class H
Frequency response 10 - 22000 Hz
Total Harmonic Distortion (THD) < 0.05 % @ 1 kHz
Signal-to-noise ratio 104 dB
Protection circuits clip limiter , DC protection , Multiband limiter , over-current , RMS speaker limiter , short circuit , soft start , thermal protection
Controls Direct access buttons , Exit / lock button , knob , On / off switch
Indicators LC display
Line inputs 4
Line input connectors Neutrik XLR
Line outputs 4
Line output connectors Neutrik XLR
Loudspeaker outputs 4
Speaker output connections Speakon
Cooling 2 fans, temperature controlled
Maximum Ambient Temperature 0 - 40 °C
Operating voltage 100 V AC - 240 V AC, 50 - 60 Hz , Switching power supply
Relative Humidity < 80% (non-condensing)
Power consumption @ full load 1900 W
Width 482 mm
Height 89 mm
Depth 320 mm
Weight 7,9 kg
Features 19" / 2 U , Active Power Factor Correction , DSP controlled

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