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U.S. Power / Voltage

By completing your order, you understand that the products(s) you are purchasing are U.S. models and may have power / voltage requirements different from that of your country.

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JBL MRX-528S Dual 18In/1000W @ 4 Ohms Subwoofer *



The MRX528S is a compact, high power subwoofer system containing dual 2044H 18" woofer in a front-loaded, vented enclosure. The enclosure is designed to present a minimum frontal area. It is also configured in an upright format to permit the convenient stacking of fullrange enclosures on top without the need for an additional pole. The system offers complete input connection flexibility for compatibility with a variety of cabling schemes. The input panel incorporates a pair of Neutrik? Speakon? NL-4 connectors wired in parallel. The MRX528S is supplied with pins +1/-1 connected to the woofer. This may be easily reconfigured to work with cabling systems intended to drive subwoofers on pins +2/-2. The enclosure is constructed of quality plywood, coated in JBL's rugged DuraFlex? finish and is braced to maximize low-frequency performance. The attractive CNC-machined, 16-gauge steel grille is internally lined with an acoustically transparent screen to provide additional driver protection and give a very professional appearance.

  • Dual 18 inch, 2044H drivers for extended
  • low-frequency output
  • Large vents for reduced distortion
  • Vertical orientation for convenient ground stacking
  • Tough DuraFlex? enclosure finish

  • Frequency Range: 35 Hz - 250 Hz
  • Frequency Response: 40 Hz - 250 Hz
  • Sensitivity: 97 dB SPL; 103 dB SPL
  • Nominal Impedance: 4 ohms
  • Power Capacity: 1000 W / 2000 W / 4000W
  • Rated Maximum SPL: 133 dB SPL continuous
  • (139 dB SPL peak)
  • Coverage Pattern: 70? x 70? nominal
  • Size (H x W x D): 43" x 21" x 27.5"
  • Weight: 121 lbs.
  • Low Frequency Driver: 2 x JBL 2044H 18" woofers

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by PowerReviews
JBL ProJBL MRX-528S Dual 18In/1000W @ 4 Ohms Subwoofer *

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars



Reviewed by 1 customer

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(4 of 4 customers found this review helpful)


it' a powerful sub

By motadelcampo

from fresno

About Me Professional


  • Attractive Design
  • Crisp Sound
  • Easy To Connect
  • Great Sound Quality


    Best Uses

    • Outdoors

    Comments about JBL Pro JBL MRX-528S Dual 18In/1000W @ 4 Ohms Subwoofer *:

    I have a pair of jbl's rmx 528s power w/ qsc rmx 2450 one for each speaker.. and they pound hard.. i don't have a problem w/ my sub.. they are great.. i would recommend them...

    Displaying review 1

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    Do you have questions about this product?

    get answers from real customers and in-house experts with AnswerBox.

    3 Questions | 3 Answers
    Displaying questions 1-3
    • Q:

      What Amp do you recommend to run 4 of these?

      Asked on 11/7/2011 by Anonymous

      1 answer

      • Staff Reviewer


        I recommend 2 QSC RMX-5050 - 1600 watts @ 4 ohms per channel in stereo.

        Answered on 11/7/2011 by DJ Menergy from Cypress, CA
    • Q:

      Hi, i have a few questions, but I'm gonna try to reduce them to one. Is this sub a good match for the JBLSRX715 (top) ? if it is, is the crown XTi4000 a good match for the sub ? and last one what is the best way to connect this sub ? in bridge mono mode or stereo using each side of the amp for each driver ?
      Thanks !
      Asked on 8/29/2011 by master from Ewing, NJ

      1 answer

      • Staff Reviewer


        What your asking sound accurate and compatible. Please feel free to call me at my extension 8124 if you have further questions or would like to purchase this product or just talk in depth about the hook ups. Thanks,
        Jay Delgado

        Answered on 9/6/2011 by Anonymous
    • Q:

      I am just wondering about the design of the speaker-usually when I stand a dual sub vertically the frequency tends to drop off an not travel well due to it being up off the floor. How well does the sound carry from this sub, since it is meant to be stacked vertically?
      Asked on 8/23/2010 by Dj Case from Idaho

      1 answer

      • Staff Reviewer


        The answer to this question depends on your application and installation. With stacked subwoofers, you are focusing the frequencies more directionally than by placing them horizontally. Now in outdoor applications, this would decrease your overall signal distance, but reduce unwanted noise complaints. However in an indoor application, this technique would actually reduce sound from bouncing off ceilings and floor surfaces. Ironically, by stacking subwoofers this actually "widens" the low-end spectrum, but reduces how far the sound waves travel. In an indoor application however, you can compensate some of the low-end roll off by placing your subwoofer in a corner of the room, preferably on a hard surface.

        Answered on 9/9/2010 by Adrian
    Displaying questions 1-3

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