Tour-quality Subwoofer That's Built to Last

The JBL STX828S passive subwoofer gives you high-performance, tour-quality sound in a road-ready format. All STX800 Series speakers give you exceptional durability thanks to multi-ply birch/plywood construction, complete with a Duraflex finish for additional protection. The STX828S handles an incredible 4,000 watts of power for rock-solid bass response in any application. No matter how you use it, you'll love the big sound and reliable performance you get from the JBL STX828S passive subwoofer.

  • JBL STX828S Passive Subwoofer at a Glance:
  • Designed for powerful performance
  • Road-ready construction
  • JBL's 100-hour power test
  • Designed for powerful performance

JBL's STX828S passive subwoofer packs dual 18" drivers with 4,000-watts RMS power handling for maximum sonic quality and amazing impact. JBL's Super Vented Gap woofer technology helps extend the frequency response, so you'll get ultra-low bass that retains punch and focus. The high power rating gives the STX828S the needed headroom to reproduce your sound with exceptional richness and focus, with virtually distortion even when pushed hard.

Road-ready construction

If you need a tour-quality subwoofer that can take abuse, you'll appreciate the STX828S's design. You get multi-ply birch/poplar construction, coated with DuraFlex for maximum protection. The hardwood cabinet isn't just strong, it reduces resonance for cleaner sound quality. And with a rugged 14-gauge steel grill protecting the woofers, you can be sure your STX828S is ready for virtually anything.

JBL's 100-hour power test

When you receive your STX828S passive subwoofer, it's already survived JBL's rigorous 100-hour power test. Each component and each system in the STX800 Series is subjected to 100 straight hours of continuous, high-level input. All JBL Professional products must pass the test before they can grace your venue, ensuring that you're receiving a reliable subwoofer that can take the real-world rigors that we all put our sound systems through.

  • Passive, dual 18" subwoofer with 4,000-watt RMS power rating at 4 ohms
  • Exceptional low-frequency response, 32Hz-250Hz
  • Maximum SPL of 138dB, sensitivity is 99dB (1W/1M)
  • DuraFlex enclosure finish protects the cabinet
  • 14-gauge steel grill protects the woofer
  • Multi-ply birch/poplar construction for incredible strength
  • 180 lbs.
  • MPN : STX828S
  • UPC : 50036904155

Audio MIDI Plus is committed to deliver the best experience for our customers. If for some reason you are not satisfied with your purchase, you may return it for a refund of the purchase price, an exchange or a store credit within 30 days from the ship date. 

In the unlikely event that you received a defective product, a wrong product, or damaged product, Audio MIDI Plus will replace it at no charge of any additional shipping cost. We will send you a prepaid label to return the item, and ship you a replacement. You will not incur any shipping charges. Please notify us of any of damaged, defective or misshipped products within 14 days.

After 30 days, you may request manufacturer warranty if your item malfunctions. Unless otherwise specified, Audio MIDI Plus is an authorized dealer for all the brands we represent.

How to request a return:
Please email us or call us to obtain a RMA number. All returns must be in a re-sellable condition and include all packing materials, accessories and paperwork. We may apply a restocking fee if the returned products fall into these following categories:

  • Missing original packaging, manuals, accessories, or any contents that was included
  • RMA number was not associated with the return
  • Items not in original like new condition

Please send all returns to:
Audio MIDI Plus Returns
3725 Saddle Drive,
Carlsbad, CA 92010

The following items are not returnable, unless received DOA, in which we will send a replacement:

  • Software
  • Electronic Delivery of Software
  • Special orders
  • DVD’s

Items that fall into the in mouth and in ear use category, such as mouthpieces, earphones, ear plugs, harmonicas, cannot be returned due to health regulations

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