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JBL SRX728S Dual 18" Subwoofer  

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Product #600444

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    JBL

    Earth-pounding bass!

    The JBL SRX728S Dual 18" Subwoofer is built to deliver smooth, clean, accurate low-end. With a pair of 18" Differential Drive woofers, it handles an amazing 1600W power (continuous). Large, open ducts minimize port turbulence and the heavily braced JBL enclosure assures tight, solid bass response. Designed to present a minimum frontal area, the subwoofer enclosure offers complete input connection flexibility with 2 Neutrik Speakon jacks. A recessed, external switch allows selection of either contacts +1/-1 or +2/-2 while an internal connector allows you to drive each woofer from a separate amplifier channel. The speaker cab is constructed of top-quality birch plywood and coated in rugged DuraFlex. Each woofer is housed in an isolated chamber and the enclosure is heavily braced to maximize low-frequency performance. The attractive CNC machined, 16-gauge steel grille is internally lined with acoustically transparent foam to provide the JBL SRX728S with additional driver protection and a very professional appearance. This subwoofer excels when paired with the PA speakers (sold separately).

    Features

    • High-power subwoofer
    • 2 - 2268H Differential Drive, neodymium magnet, 18" woofers
    • Power Rating (Continuous/Program/Peak): 1600W/3200W/6400W
    • Front-loaded vented enclosure
    • 2 Neutrik Speakon NL-4 connectors
    • External switch selects either contacts +1/-1 or +2/-2
    • Internal connector separates each woofer into 2 channels
    • Birch plywood construction
    • Heavily braced
    • Rugged DuraFlex finish
    • Isolated chamber for each woofer

    Deep, big bass without the big system? This is your loudspeaker. Order now.

     

    SRX728S Dual 18" Subwoofer Specifications:

    • Frequency Range (-10 dB): 27Hz—220Hz
    • Frequency Response (±3 dB): 33Hz—220Hz
    • Input Connection Modes: Switchable, +1/-1 or +2/-2; Internally selectable, Parallel or Discrete
    • Recommended Crossover Frequencies: 80Hz, 24dB/octave HPF; 80Hz, 24dB/octave LPF
    • Power Rating (Continuous/Program/Peak): Parallel: 1600W/3200W/6400W
    • Maximum SPL: 136dB SPL peak
    • Sensitivity (1w @ 1m): 98dB SPL
    • LF Driver: 2 x JBL 2268H 18" Differential Drive woofer with neodymium-magnet and dual voice-coils
    • Nominal Impedance: 4 ohms parallel; 8 ohms x 2 active discrete
    • Enclosure: Rectangular, 18mm, 13-ply birch plywood
    • Finish: Black DuraFlex finish
    • Grille: Powder coated, black, 16-gauge perforated steel with acoustical transparent charcoal foam backing.
    • Dimensions: 42"W x 23-3/4"H x 33"D
    • Net Weight: 166-1/2 lbs.
    Customer Reviews
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    Review Snapshot®

    by PowerReviews
    JBLSRX728S Dual 18" Subwoofer
     
    5.0

    (based on 6 reviews)

    Ratings Distribution

    • 5 Stars

       

      (6)

    • 4 Stars

       

      (0)

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    Reviewed by 6 customers

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    5.0

    Blow away the old SRX series

    By SGD production

    from Hillman Minnesota

    Comments about JBL SRX728S Dual 18" Subwoofer:

    I purchased eight of these cabinets along with eight of the matching tops and each Is powered with a QSC PLX3602 the big difference I noticed between the old cabs and these is a flatter response on the EQ and at least four times the volume I've used is what the band I work with and with four of the tops and bottoms per side we been able to cover an area with 10,000 people no problem at all

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    (1 of 1 customers found this review helpful)

     
    5.0

    Best subs on the planet

    By teenage shredmaster

    from Idaho Falls, ID

    Comments about JBL SRX728S Dual 18" Subwoofer:

    Just used 8 of these babies paired with two of the JBL VRX series flyers and two SRX PA cabs, all powered with Crown Ti 6000 amps and the sound was immaculate. Running a peavey sub enhancer through a dbx signal processor gave us crystal clear, thunderous bass. One of these and an amp to power it might be a little more expensive than say a mackie powered sub, but it's totally worth it.

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    5.0

    Thunder

    By Trey Gonzalez

    from Zapata, Tx

    Comments about JBL SRX728S Dual 18" Subwoofer:

    I own 4 of these bottoms I set up two per side with the matching cabs I have 8 cabs to go along (4 per side) with these and I plan on buying 4 more bottoms because I am very pleased with the thunder they produce that I want 4 more.

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    5.0

    Wow...

    By teenage shredmaster

    from Idaho Falls, ID

    Comments about JBL SRX728S Dual 18" Subwoofer:

    I bought these along with a Peavey 4080HZ power amp to replace a couple Mackie SWA1501 powered subs that I was using. The difference is night and day. Crystal clear, yet thunderous bass for all applications. These can handle over three times the power that the Mackie subs could (1600w continuous against only 500w) and they sound better doing it.5 on features - the unpowered speakers allow for flexibility of any independent power amp.5 on quality - these things can take a beating4 on value - they're a little pricey (but totally worth it)5 overall - they're the best money can buy.If you're debating between these and any other subs, don't even think twice about spending the extra cash for these. Just make sure you're running a decent power amp with enough power... a small 900w amp won't cut it.

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    5.0

    Portable Concert Sound

    By DJ Chucky

    from Austin ,MN

    Comments about JBL SRX728S Dual 18" Subwoofer:

    When I purchased these babys I had a Battle to attend. My rival had 4 dual 18 inch EV subs and I had These 2 JBLs. Man did these smoked those four. Poeple arriving at the event thought I had a band with me. Thats how good these sound. I with no regrets personally recomend these to any Latin band or Sonidero(DJ) out there. Estan re Chidas!.

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    5.0

    Wow!

    By Matt-XF-ot

    from Victoria, TX

    Comments about JBL SRX728S Dual 18" Subwoofer:

    My band just purchased two of these and the matching dual 15" cabs and I was blown away...like really...blown away...The 18"s are on a QSC 5050 and the kick and bass guitar come out so clean and loud its scary. I dont even need a monitior anymore because I can feel the bass all the way back at the drums! Great buy... kind of expensive but these babies will last forever. The 15"s even push hard enough to set up only them in smaller bars and clubs!

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