LD SYSTEMS LDSP6K SP 6K – PA Power Amplifier 2 x 2950 W 2 Ohm

The new Audio 3-stage CLASS-H SMPS amplifiers incorporate all the features to meet all your needs, whether youʼre starting a P.A. amplifier project from scratch or just need to upgrade your present sound reinforcement equipment. In the amps, youʼll find 2 and 4 channel models, all offering high power levels at low distortion in the range 1.5 to 6 kW, yet weighing around 8.6 kg and only 30 cm deep.

• Model Name: SP6K
• Output Power 1 kHz, 500
• Crosstalk (20 Hz - 20 kHz): > 75 dB
• Voltage Gain (selectable): 26 / 32 / 38 dB
• Input Sensitivity: 5.0 / 2.5 / 1.3 V
• Protection: Soft-start, Turn-on Turn-off transients, Muting at turn-on, Over-heating, DC, RF, Short-circuit, Open or mismatched loads, Overloaded power supply, ICL (Inteligent Clip Limiting), PMS (Power Management System), SSP (SOA Sentry Protection)
• Controls: On / Off Switch, Volume, Voltage Gain, Dual / Link Switchable, Bridge Mode Configuration Switch
• Indicators: Signal, Temperature, ICL (Inteligent Clip Limiting), PMS (Power Management System)
• Connectors:
  • Input: 2 x XLR
  • Line Output: 2 x XLR
  • Speaker Output: 2 x Speakon
• Power Supply: 230 V - 50 Hz
• Dimensions (W x H x D): 483 × 88.9 × 310 mm

RMXa Series: Professional quality performance, incorporating road-proven QSC designs

• Compact size — up to 2500 watts in two rack spaces, or 5000 watts in three rack spaces
• High-current toroidal transformers, for greater 2-ohm power and low noise
• Independent user-defeatable clip limiters reduce distortion
• Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
• The 4000-watt RMX4050a operates on a standard 15 amp plug (120V) 
• Both the RMX4050a and the RMX5050a feature a dual mono, high-current power supply for increased reliability and performance
• The RMX4050a's particularly exceptional combination of cooling capacity and electrical efficiency provides robust thermal performance suitable for high continuous power in 2-ohm stereo or 4-ohm bridged applications.
• Balanced 1/4” (6.3 mm) TRS, XLR, and barrier strip inputs
• Touch-proof binding post and Neutrik Speakon® outputs
• Front mounted gain controls for easy access
• Signal and clip LED indicators for monitoring performance
• Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
• 3-year warranty plus optional 3-year extended service contract

Power Output Level R-150 PLUS

STEREO
8ohm(T.H.D 0.05%)  50W+50W
4ohm(T.H.D 0.05%)  75W+75W

BRIDGED MONO
8ohm(T.H.D 0.05%)  50W
8ohm(T.H.D 0.5%)  170W

Frequency Response 20Hz- 20kHz, ±0.5dB

Convection Cooled

SoftStart Protection System

Balanced 10kΩ@0.775V Inputs

Stereo Mode Ratings (Both Channels Driven):

    8 ohms:
    - FTC 20 Hz - 20kHz, 0.1% THD: 1050W
    - EIA 1 kHz, 0.1% THD: 1100W
    4 ohms:
    - FTC 20 Hz - 20kHz, 0.1% THD: 1600W
    - EIA 1 kHz, 0.5% THD: 2000W (1% THD)
    2 ohms:
    - EIA 1 kHz, 1% THD: 2500W
    70V Direct Drive:
    - EIA 1 kHz, 1% THD: 2500W
    100V Direct Drive:
    - EIA 1 kHz, 1% THD: 1000W

Bridged Mono Mode Ratings/Specifications:

    8 ohms:
    - FTC 20 Hz - 20kHz, 0.1% THD: 3200W
    - EIA 1 kHz, 0.1% THD: 3600W
    4 ohms:
    - EIA 1 kHz, 1% THD: 5000W
    70V Direct Drive:
    - EIA 1 kHz, 1% THD: 5000W
    100V Direct Drive:
    - EIA 1 kHz, 1% THD: 3600W
    Signal to Noise, 20Hz-20kHz, 0.1% THD, 8 Ohms: > -100dB
    Input Sensitivity @ 8 Ohms: 1.42V (+5.3 dBu)
    Voltage Gain @ 8 Ohms: 64x (36 dB)
    Output Circuitry: 3-tier Class H
    Power Requirements (120V):
    - 1/8 power pink noise at 4 ohms: 13.9A
    - 1/3 power pink noise at 4 ohms: 26.9A
    Power Requirements (230V):
    - 1/8 power pink noise at 4 ohms: 7A
    - 1/3 power pink noise at 4 ohms: 13.5A
    Distortion (SMPTE-IM):

Power Rating

Stereo Mode:
8Ω EIA 1 kHz 1% THD - 1500W
4Ω EIA 1 kHz 1% THD - 2500W
2Ω EIA 1 kHz 1% THD - 4000W

Bridged Mono:
8Ω EIA 1 kHz 1% THD - 5000W
4Ω EIA 1 kHz 1% THD - 8000W

Damping Factor     Not Specified By Manufacturer
Input Sensitivity     26dB Setting - 5.27V
32dB Setting - 2.67V
Input Impedance     > 10kΩ balanced, or unbalanced
Gain     39.1dB
Frequency Response     20Hz to 20kHz, +/- 0.2dB
Signal-to-Noise Ratio     -104dB
Total Harmonic Distortion (THD)     0.1% @ 2Ω
0.03-0.06% @ 4Ω
0.01-0.03% @ 8Ω
Input Connections     Input: XLR Male, XLR Female and 3-pin detachable terminal blocks (1 each per channel)
DataPort: HD-15, input signal in parallel with XLR input connectors
Output Connectors     Output: Neutrik Speakon (ch 1 wired to both channels) and 5-way binding posts
Controls Front Panel     AC Power Switch
Gain Controls, 21 detents, 1 dB steps (each channel)
Controls (Rear)     Input Mode: Bridge (Yellow), Stereo (Green), or Parallel (Orange)
Gain / Sensitivity: 26dB (Orange), 32dB (Green), or 1.2V (Yellow)
High Pass (each channel): 3Hz (Off), 30Hz (Yellow), or 50Hz (Orange)
Clip Limiter (each channel): Off, On (Yellow)
Indicators     Clip Limiter (each channel): Off, On (Yellow)
Camera Resolution     Flow-thru air path and solid aluminum heat sinks
Power Consumption     120V 50/60Hz - 18A
230V 50Hz - 11A
Power Requirements     Not Specified By Manufacturer
Dimensions (WxHxD)     19 x 3.5 x 15.63" (48.3 x 8.9 x 39.7cm)
Weight     33.5 lbs (15.2kg)
Specialties     Parallel Dataport, XLR/M and XLR/F connectors for simple loop-through connectivity