LDP-Sx The LDP-Sx is a small footprint open frame power chassis for use with low voltage (80 Volts or less) edge mount style amplifiers. Available in two, four, six and nine axis versions, the LDP Series chassis includes an unregulated Bus Voltage supply, and pre-wired connections for amplifier inputs and outputs. Available options include a regulated Bias Supply (12VDC @ 500mA) / Shunt Regulator card (10A peak, 3A RMS @ 60 Volts), and Inductor Assemblies for use with low-inductance motors. All components are housed within the footprint of the chassis, with the exception of the four axis version, which requires an external transformer.

All LDP Series chassis come with cooling fans. Connections for AC input and amplifier outputs are made through a heavy-duty terminal block.


  • Pre-Wired Connections for Amplifier Inputs and Outputs
  • Available Bus Voltages: 27, 35, 40, 45, 60 or 80VDC
  • Available Bias Supply / Shunt Regulator Card (Bias: 12 VDC @ 500mA / Shunt Reg: 10A Peak, 3A RMS @ 60V)
  • Small Footprint
  • Simplifies Amplifier Installation and Connection
  • Can House Brush Type or Brushless Amplifiers
  • Built-in Cooling Fans
  • Advanced Design, High Quality and High Reliability at a Lower Cost


Standard Models:


S4 S6 S9
Max Num. of Axes 2 4 6 9
Weight 10.30 Lb
(4.67 Kg)
3.45 Lb
(1.56 Kg)
19.88 Lb
(9.02 Kg)
21.90 Lb
(9.93 Kg)
Notes External Transformer
Input Voltage 120 VAC
Bus Output Voltage 27, 35, 40, 45, 60 or 80 VDC
Bus Output Current* 25A Continuous
Main Transformer 250 Watt Standard, Others Optional
Accessories See Chart Below
Recommended Amplifiers BLH-S1, BLH-S3LDH-S2, LDH-S3,

*All ratings with forced air cooling to maintain 40C heat sink temperature. Failure to keep constant air flow to the heat sink will reduce the output current capacity and may result in damage to the unit.

Ordering Information

Product Order Number
LDP-S2-x/25 2 Slot Power Chassis WS-900-0001
LDP-S4-x/25 4 Slot Power Chassis WS-900-0002
LDP-S6-x/25 6 Slot Power Chassis WS-900-0003
LDP-S9-x/25 9 Slot Power Chassis WS-900-0004
ACC-C1A Bias Supply / Shunt Regulator WS-011-0010
ACC-C2B 3 Phase Inductor Assembly WS-011-0011

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All data sheets are in Adobe Acrobat format.