MP418SP (discontinued)

MPro Series 18" Powered Portable Subwoofer System

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The MP418SP is a compact, powered, single 18 inch, bass-reflex subwoofer system. Designed for portable applications, the MP418SP includes heavy-duty, 3 inch casters and ergonomically positioned steel carry handles to facilitate transport. A dual-channel Crown amplifier with signal processing is incorporated into the system. While one amplifier channel (the "Internal" channel) is dedicated to powering the internal 18" VGC woofer, the other channel (the "External" channel) may be used in one of two ways:

In the "Sub + Sat" mode, an MP418SP may be used with a fullrange, passive speaker for a single channel, two piece system. The external amplifier channel powers the satellite.

In the "Sub + Sub" mode, the external amplifier channel is used to drive the MP418S (a passive version of the MP418SP). Stereo, high-passed line-outputs are provided to drive powered satellite speakers or an external amplifier / speaker system.


  • 600 watt, 4 ohm VGC (Vented Gap Cooling) 18 inch low frequency transducer for unsurpassed performance.
  • Powered By Crown - Dual channel amplifier with 660 watts RMS per channel into 4 ohms or 400 watts RMS into 8 ohms.
  • Flexibility - May be used with passive or powered satellite speakers.
  • Enclosure constructed of 18 mm plywood and coated with JBL's exclusive DuraFlex - a rugged, advanced, poly-urea finish.
  • 16 gauge, hexagon perforated, steel grill.
  • Heavy-duty steel carry handles.
  • Heavy duty casters mounted on the rear of the enclosure for easy transport.
  • 35 mm pole mount receptacle.


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Owner's Manuals
MP418SP Technical Manual
updated: Feb 19, 2020
    46.6 KB Feb 19, 2020

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MP418SP (discontinued)

MPro Series 18" Powered Portable Subwoofer System