400 Watt, 300mm (12") Powered Subwoofer

Getting started with your LS120P

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Product Specifications

Frequency Response
Crossover Frequencies
50Hz-150Hz; 24dB/octave, continuously adjustable
Amplifier Power (Peak)
Amplifier Power (RMS)
400 Watts
Height (mm)
Height (in)
Weight (lb)
Weight (kg)
Width (mm)
Depth (mm)
Width (in)
Depth (in)

Beautiful, 700-watt powered subwoofer.

The LS120P is a powerful, front-firing powered subwoofer with a 300mm (12") low-frequency transducer, a 400-watt-RMS high-output, high-efficiency amplifier, and a high-quality cabinet with beautifully polished high-gloss-ebony wood panels.

JBL engineers designed the JBL LS120P subwoofer to deliver enhanced, room-filling sound from a compatible AVR (audio/video receiver) or 25- to 700-watt power amplifier.
You love movies and music. The front-firing powered JBL LS120P subwoofer employs signature JBL technology to bring all the sounds of your home theatre to life.
The LS120P combines sonic precision and musical beauty. Its 12-inch (300-millimetre) low-frequency transducer delivers deep bass impact while maintaining precise alignment to produce tight, extended bass without distortion.
The LS120P’s 400-watt RMS, high-output, high-efficiency amplifier creates thunderous deep-bass extension without breakup or distortion, even at high listening levels. Your music and movies will resonate just as they do on the stage or the silver screen.
The LS120P’s beautifully crafted cabinet, featuring high-gloss wood panels in black or mahogany, add style and class to any décor. It’s simply beautiful.
We’ve supplied four metal spikes with the LS120P for use when you place the speaker on a carpeted surface. The spikes (with accompanying coasters) decouple the speaker from the floor to prevent unwanted damping, improve bass impact and reduce “boominess.”
The tuned port in the LS120P’s enclosure extends low-frequency response, increases the bass driver’s overall efficiency, reduces distortion and improves power-handling capacity.
The LS120P is easy to use. Its level control conveniently adjusts the relative volume level of the speaker’s low frequencies – allowing you to hear your audio just as you’d like it.

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