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JBL SRX728S Subwoofer (1600 Watts, 2x18")

The JBL SRX728S is an amazing subwoofer that handles up 6400 watts peak of power for some serious bass you have to hear to believe. (29) Read 2 reviews for this product | Rate and review this product
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JBL STX828S Subwoofer (4000 Watts, 2x18")

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Product Description

Whether you’re filling an arena or just going for the thumpenist dance floor in town, sometimes you just need a lot of bass. When these occasions arise, look no further than the SRX728S from JBL. Wielding two 18 inch woofers and rated at 3200 watts program, the SRX728S is a low-end machine designed for the sole purpose of generating massive low-end torrents with incredible clarity and precision. Rigorously tested and perfected to meet JBL’s high standards of performance, the SRX728S is dual woofer enclosure with enough power for any job.

Unparalleled Low-end Performance

JBL has long been producing some of the best sub-woofers out there, and with the SRX728S they have again raised the bar. With 3200 watts RMS, 6400 watts peak, and 136 dB peak SPL, the SRX728S generates enough bass power to rock any venue whether permanently installed or as part of a mobile rig. Large open ducts have been added to minimize port turbulence, and the reinforced design of the enclosure ensures tight solid bass reproduction. All these features combine to deliver smooth and accurate low-extension with a frequency range dipping all the way down to 27Hz.

Built to Last

Like the rest of the SRX series, the SRX728s has been designed by JBL to withstand the pressures of modern live sound environments and the abuse of the touring. The rugged birch plywood enclosure is coated with JBL’s Duraflex finish specifically created to protect the cabinet through years of heavy use. All speakers in the SRX series have been subjected to JBL’s 100 hour torture test during which new designs are run at extremely high levels for more abuse than they’re likely to meet in years of regular usage. With JBLs reputation and standards backing the whole series, the SRX728S is a sub you can trust to last a lifetime.

Features:

-Two JBL 2268H 457 mm (18 inch) different drive woofers with neodymium-magnet and dual voice-coils for massive low-end extension.
-Large open ducts for minimal port turbulence.
-Switchable, +1/-1 or +2/-2 input connections for use with array of amps and systems.
-Ability to run woofers as discrete or parallel for additional configuration options.
-1600 w continuous, 3200 w program, and 6400 peak power rating (parallel)
-Rugged 18mm, 13 ply birch wood enclosure with JBL Duraflex finish for a rugged and durable enclosure.
-Overall weight of 166.5 lbs with four steel handles for movement.

With a JBL SRX728S or two in your arsenal, never again will you have worry about a lack of low-end extension in your venue or mobile system. Filled with helpful features to easily integrate into any number of set-ups, the SRX728S is a great solution to any low-end deficiencies you may face. From rock venues, to clubs, to mobile DJs and rental companies, the SRX728S offers all the bass you need for years to come.

zZounds is an authorized dealer of JBL products.
Frequency Range (-10 dB): 27 Hz - 220 Hz

Frequency Response (+/- 3 dB): 33 Hz - 220 Hz

Input Connection Modes:
- Switchable, +1/-1 or +2/-2
- Internally selectable, Parallel or Discrete

Recommended Crossover Frequencies:
- 80 Hz, 24 dB / octave HPF
- 80 Hz, 24 dB / octave LPF

Power Rating (Continuous *1 / Program / Peak): Parallel: 1600 Watts; 3200 Watts; 6400 Watts

Maximum SPL *2: 136 dB SPL peak

Sensitivity (1w @ 1m): 98 dB SPL

LF Driver: 2 x JBL 2268H 457 mm (18 in) Differential Drive woofer with neodymium-magnet and dual voice-coils

Nominal Impedance:
- Parallel: 4 ohms
- Discrete: 8 ohms x 2

Active Tunings: dbx DriveRack, all models.

Enclosure: Rectangular, 18 mm, 13-ply birch plywood

Finish: Black DuraFlex finish

Grille:
- Powder coated, black, 16-gauge perforated steel with acoustical transparent charcoal foam backing.
- Removable JBL badge and punched JBL logo.

Input Connectors: Neutrik Speakon NL-4 (x2)

Dimensions (H x W x D): 23.7 in x 42 in x 33 in (602 mm x 1067 mm x 838 mm)

Net Weight: 166.5 lbs. (76 kg)

*1 - 40 Hz to 120 kHz pink noise with 6 dB crest factor.

*2 - Calculated based on power rating and sensitivity.

JBL continually engages in research related to product improvement. Some materials, production methods and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated.
If you have additional warranty questions, please contact the manufacturer at 800-852-5776
Customer Reviews
5 out of 5 (29 ratings) Rate and Review This Product
"A good starting point."
Sound: The tone and ease of tuning {using the Harmon Pro Software} makes a breeze to phase align. As co-owner of www.socalboogie.com, two of the 728's along with two 725's are all that we need for Pro-Audio services, and DJ audio services. I currently run Two Xti 4000's and an Xti 6000 {4000's in bridge high/low for the 725, 6000 in stereo for the 728.} Feature: Best feature is the ability to de-configure the subs to run a dedicated amp per sub {as I did before purchasing an Xti 6000.} Makes it easier for the LOOK of a large sub with the driven bass off of 1 sub. Ease of Use: No casters means either A. screwing some on {not my choice} or B. purchasing furniture dollies {my route.} Cases just make these TOO large, so I opt for the JBL covers. Weight, obviously, is a huge concern. As a single person, I can still muster these myself on and off. Quality: If price point is your positoin, move into the MRX line or EON line. These are NOT cheap, and cheap is something never to skimp out on with Pro anything. Duratex coating is somewhat skimpy {Harbinger's finish feels more durable.} The dual handles on either side make it a breeze to transport them around, or push them on a furniture cart. SOLID cabinets that will not let you down, even with the toughest lows to bellow out. Value: These are closest valued next to EV QRx line. Manufacturer Support: JBL has always been very good with questions. What's nice is that there right in Northridge CA, {as my company is in Los Angeles, CA.} The Wow Factor: Very good looking cabinet. Ultra responsive and linear sound. Nice that you can remove the "oh so JBL" logo's from the grille's. Overall: For around 500 and below, the dual 18's and dual 15's will not let you down. Even for a beginner with just a basic 15 band equalizer and no processing will produce excellent results. Pair these up with at least something around 1200 watts in 4 ohms. Anything less is starving them in tonal qualtiy. As for low's the two 18's pair up very well to carry the 15's {and if less is needed, simply re-configure the 728s.
Style of Music: Various
17 of 19 people (89.47%) found this review helpful. Did you?
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zZounds has verified that this customer bought this product from us. "This thing will rock your world!"
Sound: The sound quality and output is simply amazing. You can hear this thing from a quarter mile away! (no joke). The lows are deep and will actually move your clothing when you get anywhere near this thing. Punishing SPL Feature: I wish the duraflex finish was a little tougher, but it handles everyday abuse pretty well. Option to run both woofers at 4 ohms, or each woofer at 8 Ease of Use: Plug and play - use a Crown XTI4000 or 4002 and get ready to rock! Quality: These things can take serious punishment. They will hit hard all night long and not even break a sweat. Keep them running with good clean power and they'll last for years. Value: A little pricey, but you get what you pay for. Worth every penny! Manufacturer Support: I've never needed to service these The Wow Factor: This thing is super sexy. Don't hesitate buying a few of these! Overall: I love the SRX728S - it sounds way better than any other subs I've heard including higher end Dynacords, etc. Tons of output and great sound quality.
Style of Music: Hip-Hop/House
24 of 29 people (82.76%) found this review helpful. Did you?
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