LD Systems SP 46K

The LDSP46K is a no-compromise 4-channel power amplifier providing professional performance and versatility in a compact switch mode power supply Class H design. With a massive output of 4x 1.440W into 2Ohms and 2x 2.880 in 4Ohms stereo bridge mode it is an extremely efficient solution for touring and installation sound reinforcement weighing in at a mere 8.6kg.

Consistent operation is ensured by the heavy duty construction with high quality components and comprehensive protection circuitry including soft start with turn-on muting, PMS™ power management, SSP™ (Safe operation Sentry Protection) and ICL™ Intelligent Clip Limiting to maintain signal integrity. Protection circuits against DC, thermal and power supply overload are implemented. A switchable subsonic filter and a 3-position gain switch offer variable amplifier adjustment.

The LDSP46K features a full 20Hz - 20kHz bandwidth with low THD and crosstalk, a damping factor higher than 500, excellent S/N ratio and 3 selectable gain/sensitivity levels.

• Product type Power Amplifiers
• Weight 8,6 kg
• Height 89 mm
• Width 483 mm
• Depth 310 mm
• Frequency response 20 - 20000 Hz
• Type PA Power Amplifiers
• Controls bridge/stereo mode selector, dual/link switch, gain, mains switch (on/off), volume
• Operating voltage 220 V AC - 240 V AC, 50-60 Hz
• Indicators ICL (Intelligent Clip Limiting), PMS, Signal, temperature
• THD < 0.05 %
• Signal-to-noise ratio 116 dB
• Crosstalk >75 dB
• Protection circuits DC, ICL (Intelligent Clip Limiting), mute when turning on, Open or mismatched loads, PMS, power supply overload, short circuit, soft start, SSP, thermal protection
• Input sensitivity 3.5 / 1.8 / 0.9 V
• Cooling 2 fans, continuous speed
• Loudspeaker outputs 4
• Speaker output connections Speakon
• Rated ouput power (1kHz @ 4 Ohms) 4 x 1000 W
• Rated ouput power (1kHz @ 8 Ohms) 4 x 620 W
• Output circuitry Class H
• Rated ouput power (1kHz @ 8 Ohms, bridged) 2 x 2000 W
• Gain 26 / 32 / 38 dB
• Power consumption @ full load 19
• Rated ouput power (1kHz @ 2 Ohms) 4 x 1440 W
• Rated ouput power (1kHz @ 4 Ohms, bridged) 2 x 2880 W
• Damping factor > 500