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Description
JBL SRX928S Powered Subwoofer - 2 x 18inAudio professionals in need of a subwoofer that's designed to complement the SRX900 Series full range sound reinforcement systems will be impressed with the JBL SRX928S, a dual 18" powered subwoofer well suited for rental companies, touring artists, DJs, and installations. The integrated DSP and amplification offer a true plug and play experience while providing consistency and optimum performance anywhere in the world. The two 18" Differential Drive
Audio professionals in need of a subwoofer that's designed to complement the SRX900 Series full-range sound reinforcement systems will be impressed with the JBL SRX928S, a dual 18" powered subwoofer well suited for rental companies, touring artists, DJs, and installations. The integrated DSP and amplification offer a true plug-and-play experience while providing consistency and optimum performance anywhere in the world.
The two 18" Differential Drive woofers are powered by the built-in Class-D amplifier and provide a frequency response of 31 to 100 Hz at 140 peak SPL. The SRX928S incorporates a large central low-frequency port design that improves airflow and reduces audible turbulence, even at high output levels. A full-featured software package provides users control of the system on various platforms including Windows, Mac, and iOS for iPad.
Highlights
- High-performance, high-density system solution in a truck-pack friendly format
- High-power-handling transducers deliver low distortion, high fidelity, and class-leading output
- Built-in, passively cooled Class D amplification with a universal power supply
- Dual ethernet ports with Neutrik etherCON connectors
- Supports HARMAN HControl Ethernet
- User-controllable DSP
- LevelMax limiting uses sophisticated excursion-control algorithms to protect transducers
- Rear-panel LCD provides complete access to control features
- Reinforced 0.7" plywood enclosure
Performance
The 2279-1 18-inch woofers deliver transparent, linear bass response down to 31 Hz. This driver uses dual 3" voice coils and leverages JBL's patented Differential Drive technology to deliver maximum sensitivity and power handling in a light, compact design.
Compatibility
SRX900 Series subwoofers are acoustically compatible with all SRX900 full-range speakers and support 60 Hz and 80 Hz operating modes. SRX900 line arrays can be ground stacked with SRX900 subwoofers using the optional base plate accessories.
Controlled Coverage
SRX900 subwoofers can be used in omnidirectional or cardioid configurations simply by selecting the appropriate speaker preset and cabinet orientation. The preset can be accessed directly from the rear panel LCD or via software.
Powered Solution
The fully integrated built-in amplifier and DSP are based on proven JBL technologies and explicitly packaged to fit the needs of the SRX900 Series. The DSP includes everything needed to optimize a system, including 24 user-adjustable filters, 2000ms of delay, and advanced features like array size compensation and FIR-based throw distance correction filters.
Versatile and Scalable
The SRX900 Series offers a complete system solution, including speakers, subwoofers, accessories, and software that support a variety of configurations and simplify storage, transport, and rigging. Because systems are scalable, it's easy to start with a small system and add components over time. All SRX900 products have been designed to work seamlessly together with other JBL tour sound products, with common voicing targets and phase characteristics that ensure systems combine coherently.
JBL SRX928S Specs
| Configuration | Active Dual Subwoofer |
| Enclosure Type | Bass-Reflex Line Array Subwoofer |
| Total Power Capacity | 1100 W RMS 2500 W Peak |
| Amplifier Class | Class-D |
Drivers
| HF Driver | None |
| MF Driver | None |
| LF Driver | 2 x 18" / 457.2 mm Woofer |
| LF Voice Coil | Dual 3" / 76.2 mm |
| Magnet | Ferrite |
Performance
| Frequency Range | 31 Hz to 100 Hz -10 dB |
| Frequency Response | 39 Hz to 80 kHz -3 dB |
| Maximum SPL | 140 dB (Peak) |
| Input Sensitivity | +6 dBu |
| Max Input Level | 21 dB |
| I/O Impedance | XLR Line Input: 100 Kilohms |
Connectivity
| Audio I/O | 2 x XLR 3-Pin Balanced Line Input/Output |
| Network I/O | 2 x etherCON (Control/Network/Proprietary) In/Out |
| USB | None |
| Wireless Connectivity | None |
Signal Processing
| EQ | Yes |
| Parametric EQ | Yes |
| Semi-Parametric EQ | None |
| Alignment Delay | Yes |
| Phase Adjustment | Yes |
| Digital Signal Processing | Delay, FIR Filter (Adjustable via Optional Software) |
| Maximum Sampling Rate | 48 kHz / 24-Bit |
Power
| AC Input Power | 100 to 240 VAC, 50 / 60 Hz |
| AC Power Connector | 1 x PowerCON TRUE1 Input 1 x PowerCON TRUE1 Output |
| Current Consumption | 120 VAC: 4.8 to 18.2 A 240 VAC: 2.1 to 7.3 A |
Physical
| Mounting | Integrated Rigging |
| Handles | 2 x Each Side |
| Cooling | Convection, Fan (Variable Speed), Heat Sink |
| IP Rating | IP54 |
| Construction Material | Aluminum, Perforated Metal Grille, Plywood |
| Dimensions | 47.4 x 26.8 x 22.2" / 1204 x 680.7 x 563.9 mm |
| Weight | 155 lb / 70.3 kg |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Simple upgrade that actually improves your setup
Color: Black
I didn’t expect much from a laptop stand, but this made a noticeable difference right away. It lifts the laptop to a much better eye level, which helps a lot with posture—especially if you’re working for a few hours at a time.
The build quality is solid. It’s aluminum, has a bit of weight to it, and doesn’t feel cheap. Once it’s on the desk, it stays in place. The rubber grips hold the laptop securely, and I haven’t had any slipping issues.
I’m using it with a MacBook Pro and it fits perfectly. There’s enough space underneath for airflow, and I’ve actually noticed the laptop runs a bit cooler compared to sitting flat on the desk.
Overall, it’s a simple product but very effective. One of those small upgrades that you end up appreciating every day.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
I like it just fine. It’s good and it works for me.
Color: Black
It’s sturdy and I like the design. Seems pretty comparable to every other MacBook stand, but I chose this one for some reason and I’m happy with it. The height is not adjustable, so if you want that find another one.
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Reviewed in the United States on May 6, 2025
★★★★★ 5
Great computer stand
Color: Gray
These stands are great. We now have two of them. My wife suffers from Carple tunnel syndrome and these stands lesson the effects when typing. They are stable and hold the computer securely.
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Reviewed in the United States on July 29, 2025
★★★★★ 4
Weighty and well designed
Color: Gray
The Bestand Laptop Stand is a testament to quality and thoughtful design.
From an ergonomic perspective, this stand truly shines. It elevates my laptop screen to eye level, promoting better typing and viewing to reduce strain on my back and neck.
Another standout feature is the weighty and solid construction of this stand. It's crafted from a single piece of aluminum, which not only adds to the stand sturdiness but also gives it a sleek, modern look. The surface is spacious and accommodates laptops from 11 to 16 inches.
Both the weight of the stand and the silicone treads below and underneath the laptop, and on a metal lip in front, ensure that neither the stand nor the computer move around. The manufacturer claims a 66-pound load-bearing capacity for the stand, and I believe it. This thing is rugged.
The inclusion of a slot at the rear for cables to pass through is a small yet incredibly practical detail. It helps keep my workspace organized and tidy.
Three slots in the stand aid with heat dissipation and are yet another thoughtful design feature that cools my laptop during extended usage.
While the stand excels in many respect, one limitation is its lack of height adjustability. However, if height adjustability is important to you, you’ll find lots of other options for stands here on Amazon.
Bottom line: I like it. Chances are, you will too. The Bestand Laptop Stand is a nice blend of durability, functionality, ergonomic comfort, and attractiveness—all at a reasonable price.
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Reviewed in the United States on September 25, 2023
★★★★★ 5
Pleasantly Surprised
Color: Gray
Honestly, I was a little hesitant buying a laptop stand that didn't offer an adjustable angle, but for the price, I couldn't pass up checking this out. I'm very glad I did.
First, this stand came really well packaged. For a $37 stand, I wasn't expecting much, but box and packaging was impressive. After pulling the stand out of the box, my first impression was this was both weighty and well machined. The edges were smooth, there were no imperfections I could find and the space gray color was dead-on.
As far as functionality goes, this is a tremendous improvement form having my MacBook Air sitting directly on my desk; the angle is perfect for my use case, the wiring hole in the back is more than adequate and the whole setup just looks slick. If you're hesitant about buying a cheaper stand that doesn't offer an adjustable angle, don't worry about this one, it does the trick.
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Reviewed in the United States on October 24, 2021