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.
- 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
| 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 (1 kHz @ 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 |
| High Z 100Vrms / 140Vpeak | 2 x 2400 |
| Output circuitry | Class H |
| Frequency response | 10 - 22000 |
| Total Harmonic Distortion (THD) | < 0.05 % @ 1 kHz |
| Signal-to-noise ratio | 104 dB |
| Protection circuits | clip limiter |
| Protection circuits | DC protection |
| Protection circuits | Multiband limiter |
| Protection circuits | over-current |
| Protection circuits | RMS speaker limiter |
| Protection circuits | Short circuit |
| Protection circuits | soft start |
| Protection circuits | Thermal protection |
| Controls | Direct access buttons |
| Controls | Exit / lock button |
| Controls | knob |
| Controls | 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 |
| Power supply | 100 V AC - 240 V AC, 50 - 60 Hz |
| Power supply | 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 |
| Features | Active Power Factor Correction |
| Features | DSP controlled |
