Measuring 755mm wide x 594mm high x 905mm deep, the installation version of the L20 sub employs a 20″ long excursion driver in Baltic birch / poplar plywood cabinet with a fabric covered grille and threaded inserts for mounting accessories, and quick-connect push connector. With a frequency range of 28Hz-120Hz, and 141dB Peak SPL, The L20-I is perfect for extending the low frequency response of P+ Series installations.

Key Features

  • Install version of L20 sub
  • Fabric grille cover and quick-connect push connector
  • Extends LF performance to 28Hz
  • 141dB peak SPL
  • Threaded inserts on the back and on both sides for connection of mounting accessories
  • Available in black, white and custom RAL colours


Frequency Response @-6 dB28 Hz to 120 Hz
Peak SPL@1m141 dB Peak
Operating Voltage80 Vrms (180 Vpeak)
Crossover Frequency60 Hz, 85 Hz or 120 Hz
Nominal Impedance4 Ohms


Components1 x Neodymium 20” 4 Ohms long excursion
ConnectorsQuick-connect push connector
Rigging points1 x universal accessory fit on each side + 1 x M20 thread for Pole Stand on top
MaterialCustom made bent plywood of baltic birch and poplar
FinishBlack or White structural paint
Front FinishFabric covered front grille
Height x Width x Depth594mm x 755mm x 905 mm (23.4” x 29.7” x 35.6”)
Weight: Net59 kg (130 lbs)
Operating temperature range0°C - 40 °C (32° F - 104° F)
Storage temperature range-20 °C - 60 °C (-4 ° F - 140° F)
System Operation
Recommended powering solutionNXAMP4x4mk2 Powered TDcontroller: Up to 2 x L20 per channel
Optional powering solutionNXAMP4x1mk2 Powered TDcontroller (Bridged): 1 x L20 per channel
NXAMP4x2mk2 Powered TDcontroller (Bridged): 1 x L20 per channel