PRX700 Series 15" powered PA subwoofer

Item #: 855PRX715X

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Hard punching bass

You'll add real impact to your performance when you add a JBL PRX715XLF subwoofer or two to your PA system. A single PRX715XLF powered sub delivers up to 1,500 watts to its 15" woofer, producing 131 dB of sound pressure — that's enough power to fill a small club or auditorium with wall-shaking bass. If you're a church performer, a working band, or a DJ, you can create a compact full-range PA system capable of handling medium-sized clubs and venues by adding a pair of these powerful subs to a set of PRX710, PRX712, or PRX715 powered speakers.

Rugged road-tested components


PRX715XLF with grille removed

The 15" low-frequency driver in the PRX715XLF is the same one that JBL uses in its top-of-the-line concert arrays. This Differential Drive® subwoofer puts out high-powered bass, having proven its toughness on the road by standing up to years of touring.  A built-in dynamic limiter by dbx ensures that an unexpected overload won't damage the sub.

JBL used tongue-and-groove construction to build this solid poplar enclosure, then coated it with their tough DuraFlex™ finish. You can be sure this sub will survive the normal bumps and bangs of life on the road and play reliably on the job every night. The enclosure features a pole socket so you can mount your mid/high PA speaker above the sub on a standard speaker pole, for a smaller onstage footprint and better audience coverage.

Product Highlights:

    Powered PA Subwoofer
    • JBL 2275H Differential Drive® dual voice coil 15" subwoofer
    • maximum output level: 131 dB SPL
    • maximum output power: 1,500 watts
    • frequency response: 44-91 Hz
    • poplar plywood bass-reflex enclosure with tongue and groove joints and DuraFlex™ finish
    Electronic Features
    • left and right XLR/1/4" TRS phone balanced inputs
    • left and right XLR pass thru outputs for connecting PA speakers
    • switchable high-pass filter (120 Hz, 24 dB/octave) on outputs
    • amplifier/speaker gain control
    • DSP crossover low-pass filter (100 Hz, 48 dB/octave) for subwoofer
    • polarity switch (0- or 180-degrees)
    • 1,500-watt Class D amplifier
    • dbx Type IV™ dynamic limiter with indicator light
    General Features
    • steel grille and injection-molded glass-filled nylon handles
    • 1-7/16" (36 mm) socket for optional PA speaker mounting pole
    • weight: 56 lbs
    • dimensions: 17-9/16"W x 21-9/16"H x 22-1/2"D
    • warranty: 3 years
    • Our 60-day money-back guarantee

    Should I get a powered or non-powered sub?

    For small-to-medium venue applications, a powered subwoofer will give you the low-end thrust your music deserves. These self-contained systems are designed to get the most output possible from their built-in amplifier and sub. So, when you're shopping, we suggest you pay more attention to the listed sound pressure level (SPL) ratings than the listed wattage ratings. For larger spaces and/or bass-heavy presentations, you'll need the power and projection you can only get from separate amplifier and sub. For a non-powered sub, you can safely use an amplifier whose continuous power output is rated up to double the rated program power capacity of the sub.

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    Hands-on research

    What's in the box?

    Download owner's manual

    • Powered sub
    • AC power cord

    Features and Specs

    Drivers per speaker 1
    Woofer Size (inches) 15
    Tweeter Size (inches) N/A
    System Frequency response 44-91 Hz
    Maximum SPL 131
    Built-in Amplifier Yes
    RMS Power rating 750
    Program Power rating N
    Peak Power rating 1500
    Mic Inputs N
    Line Inputs 2 x XLR/1/4" combo
    Tone Controls Polarity
    Width (inches) 17-9/16
    Height (inches) 21-9/16
    Depth (inches) 22-1/2
    Weight 56 lbs

    Product Research


    Powered Sub: The JBL PRX715XLF is a high performance self-powered subwoofer system. The PRX715XLF is comprised of a powerful 15" Differential Drive dual voice-coil and magnetic gap, woofer driven by a 1500-watt (750 watts RMS) Class-D power amplifier.

    Rugged Enclosure: The PRX710'e enclosure is built from a combination of 25mm (on the top and bottom for added rigidity) and 18mm, strong, light-weight poplar plywood made structurally sound with tongue and groove joints. The cabinet is protected by JBL's tour proven DuraFlex finish and 16AWG steel grille. Light-weight glass-filled nylon handles ensure portability.

    Combo-Connector: Two combo-connector (Channel 1/2) accept input signal from XLR and 1/4" line-level sources.

    Loop-Thru/High-Pass: Two XLR outputs provide either a loop-thru or a high-passed, line-level output of the signal input from Channel 1 and 2.

    Polarity Switch: Normal or reverse polarity can be switched for matching to varied sub/satellite system configurations.

    LED Indicators: Signal present and limiter lights indicate the system status and assist in setting the optimum level via the level control knob.

    Pole Receptacle: A pole receptacle on the top-panel of the powered sub accepts JBL's SS4-BK or SS4-BK24 pole mount (sold separately).

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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    The JBL PRX718XLF offers these features:

    18" subwoofer

    up to 134 dB SPL maximum output

    bass response to 35 Hz

    81 lbs.