---
product_id: 21907392
title: "JBL Professional SRX828S Portable, Passive, Non-Powered Subwoofer System, Dual 18-Inch, Black"
brand: "jbl"
price: "R110343"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Jbl"
url: https://www.desertcart.co.za/products/21907392-jbl-professional-srx828s-portable-passive-non-powered-subwoofer-system-dual
store_origin: ZA
region: South Africa
---

# 141 dB max SPL output 18mm wooden enclosure durability 1200W continuous power rating JBL Professional SRX828S Portable, Passive, Non-Powered Subwoofer System, Dual 18-Inch, Black

**Brand:** jbl
**Price:** R110343
**Availability:** ✅ In Stock

## Summary

> 🎤 Own the stage with JBL’s seismic bass power!

## Quick Answers

- **What is this?** JBL Professional SRX828S Portable, Passive, Non-Powered Subwoofer System, Dual 18-Inch, Black by jbl
- **How much does it cost?** R110343 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/21907392-jbl-professional-srx828s-portable-passive-non-powered-subwoofer-system-dual)

## Best For

- jbl enthusiasts

## Why This Product

- Trusted jbl brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic Portability:** Comfort-grip handles and lightweight design make setup effortless
- • **Tour-Ready Durability:** Built with rugged 18mm wood and steel grilles to withstand relentless use
- • **Powerhouse Performance:** Delivers thunderous 141 dB SPL for stadium-level impact
- • **Precision Bass Control:** Dual 18-inch woofers with 30-150 Hz frequency range for crystal-clear lows
- • **Seamless System Integration:** Optimized for pairing with JBL SRX series for flawless sound coverage

## Overview

The JBL Professional SRX828S is a dual 18-inch passive subwoofer engineered for professional live sound and installations. With a peak output of 4800W and max SPL of 141 dB, it delivers deep, precise bass across a 30-150 Hz range. Its rugged 18mm wooden enclosure and steel grille ensure durability for touring and heavy use. Designed for easy transport and flexible mounting, it integrates seamlessly with JBL SRX speaker systems, making it the go-to choice for DJs, bands, and event professionals seeking powerful, reliable low-frequency performance.

## Description

Introducing the JBL Professional SRX828S, the ultimate passive double 18” subwoofer designed for concert, touring, or installed use. Whether you’re a musician, band, DJ, or need a robust sound system for public speaking, performance venues, corporate spaces, educational facilities, or houses of worship, the SRX828S is your go-to solution. This subwoofer is engineered to deliver powerful and precise low-frequency sound, enhancing your audio experience with unmatched clarity and depth. The SRX828S features two 18” woofers with an 8 Ohm impedance, capable of handling 4800W Peak, 2400W Program, and 1200W Continuous power. With a frequency range of 30Hz-150Hz and a frequency response of 47Hz-120Hz, it ensures that every beat and note is reproduced with exceptional accuracy. The subwoofer can achieve a maximum SPL of 141dB, making it perfect for high-energy performances and large venues. Its 18mm wooden enclosure, 14-gauge steel grilles, and patented DuraFlex finish guarantee durability and longevity, even in the most demanding environments. Designed with convenience in mind, the SRX828S includes a standard M20 pole cup for easy integration with top boxes and indexing feet for secure stacking in both standard and cardioid positions. When paired with JBL SRX812, SRX825, or SRX835 speaker systems, you can achieve optimal performance and sound coverage. The subwoofer is fully supported in Audio Architect, providing seamless control and customization. Ergonomically designed handles ensure a comfortable grip, making transportation and setup a breeze. Elevate your sound system with the JBL Professional SRX828S subwoofer and experience the perfect blend of power, precision, and durability. Whether you’re setting up for a concert, corporate event, or any other performance, this subwoofer is built to exceed your expectations.

Review: Great for festivals - Great sound light weight also
Review: It leave me wanting more..... More SRX speakers - For starters, the SRX line is probably overkill for my use: DJ indoors, for 100 people. Be aware that these are not your normal "plug-n-play" speakers. They are programmable. Before your first use you really need to plug them into a computer and program your own EQ preset. They come flat, and most people are going to feel disappointed with the performance until you program them and create your own preset. This might be more technical and more of a PITA than you want to deal with. I paired the SRX812P with my Yorkville 18" LS801P sub and it was magic. A single SRX812P out performed BOTH of the other main speakers I was using. I turned my old mains as far up as they would go, and the single SRX812P was so loud I couldn't hear them anymore, and it still had a LOT more headroom. The only complaint I have, and its really irrelevant, is that its not going to blow you away in the bass department. Its a great mid range speaker. That's why you pair it with the powered subs.

## Features

- Portable, Passive, Non-Powered Subwoofer System, Dual 18-Inch. Technical specifications: 141 dB maximum SPL output; 30-150 Hz frequency range; 47-120 Hz frequency response; Power Rating of 1200W continuous, 2400W program, 4800W peak
- Durability - With best in class 18mm wooden enclosures, 14 gauge steel grilles, and JBL’s Patented DuraFlex finish, SRX800 speakers are built to last and withstand a lifetime of hard tour use.
- Ergonomically designed handles support an easy, non-fatiguing grip for streamlined handling, and M10 suspension points, indexed feet, and pole/tripod mounts support a wide array of configurations
- JBL’s patented Differential Drive Technology incorporates lower mass ferrite magnets for reduced weight, increased power handling, exceptionally low distortion and extended low frequency response.
- Achieve optimal performance and sound coverage when paired with JBL SRX812, SRX825 or SRX835 speaker systems. Create a perfect system for live music performances, mobile DJs, fixed DJ setups, singers, bands, corporate spaces, public speaking PA systems, houses of worship, sound system rentals, tours, and permanent installations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B013LGCSWW |
| Additional Features | Portable |
| Antenna Location | public |
| Audio Driver Size | 18 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Mono |
| Best Sellers Rank | #46,597 in Musical Instruments ( See Top 100 in Musical Instruments ) #144 in Stage Subwoofers #20,686 in Music Recording Equipment |
| Brand | JBL |
| Color | Black |
| Compatible Devices | Amplifier |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | Wired (speakON NL4) |
| Connectivity Technology | Wired |
| Control Method | App |
| Controller Type | Remote Control |
| Customer Package Type | FFP |
| Customer Reviews | 4.2 out of 5 stars 110 Reviews |
| Enclosure Material | Wood, Steel |
| Frequency Response | 120 Hz |
| Global Trade Identification Number | 00691991001666 |
| Is Waterproof | False |
| Item Dimensions D x W x H | 22.6"D x 47.4"W x 26.8"H |
| Item Height | 22.57 inches |
| Item Type Name | JBL Professional SRX828S Compact Dual Passive Subwoofer System, 18 Inch (SRX828S) |
| Item Weight | 137 Pounds |
| MP3 player | No |
| Manufacturer | JBL Professional |
| Model Name | SRX828S |
| Model Number | SRX828S |
| Mounting Type | Tripod, Floor |
| Number of Audio Channels | 2.0 |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Signal-to-Noise Ratio | 141 dB |
| Speaker Maximum Output Power | 4800 Watts |
| Speaker Size | 18 Inches |
| Speaker Type | Passive Subwoofer |
| Specific Uses For Product | live music performances, mobile DJs, fixed DJ setups, singers, bands, corporate spaces, public speaking PA systems, houses of worship, sound system rentals, tours, and permanent installations |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 18 Inches |
| UPC | 691991001666 |
| Unit Count | 1.0 Count |
| Warranty Description | Limited 5-year warranty on speaker; limited 3-year warranty on amplifier; limited 2-year warranty on cabinet. |
| Warranty Type | Limited Warranty |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 18 Inches |

## Product Details

- **Audio Output Mode:** Mono
- **Brand:** JBL
- **Connectivity Technology:** Wired
- **Frequency Response:** 120 Hz
- **Speaker Maximum Output Power:** 4800 Watts

## Images

![JBL Professional SRX828S Portable, Passive, Non-Powered Subwoofer System, Dual 18-Inch, Black - Image 1](https://m.media-amazon.com/images/I/81cdLUsBTWL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: This is listed as a speaker system.  How many speakers are included?**
A: One speaker only. You may consider it a system as they are active. They have a Class D amplifier and a DSP built in.

**Q: Can I use this for my home stereo, in 14’ by 25’ living room**
A: This is designed more for a 140' by 250' living room....
I'm guessing that, if you have 2 grand to spend on a sub, and have to ask this question...  Return the stolen money.

**Q: I am planning to buy a sound system for 1000 people venues or a little more mostly out door. What would you guys recomend me tu buy and quantities?**
A: Buy 4 of these, 2 per side and 2 or 4 subs.  I would say 4 subs.

**Q: What cables (short) are needed connect my phone's audio out to srx835p? should modify anything when providing unbalanced mono input from phone?**
A: First I will say the speakers are killer and destroy they can go so loud perfect for my outside venue.  I run mine off of a mixer board (they are not expensive) so I have a Blootooth reciever into the board going into the speakers.   I have not tried it but on other speakers like this I simply used a 3.5mm output from my phone with a 3.5mm TRS to two 6.35 mm TRS plugs that go into the speakers.  search for example on amazon "UGREEN 3.5mm 1/8" TRS to Dual 6.35mm 1/4" TS Mono Stereo Y-Cable Splitter Cord Compatible for iPhone, iPod, Computer Sound Cards, CD Players, Multimedia Speakers and Home Stereo Systems 15FT"    You could also buy a bluetooth reciever/transmitter and plug the 3.5mm into that so you can walk around with your phone and play tunes that way.  For example something like this again on amazon (there are many) APEKX Clip Bluetooth Audio Adapter for Headphones, Headset, Speaker, Wireless Receiver with MIC for Hands-Free Call and Music

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for festivals
*by M***E on January 14, 2026*

Great sound light weight also

### ⭐⭐⭐⭐⭐ It leave me wanting more..... More SRX speakers
*by J***Y on April 30, 2024*

For starters, the SRX line is probably overkill for my use: DJ indoors, for 100 people. Be aware that these are not your normal "plug-n-play" speakers. They are programmable. Before your first use you really need to plug them into a computer and program your own EQ preset. They come flat, and most people are going to feel disappointed with the performance until you program them and create your own preset. This might be more technical and more of a PITA than you want to deal with. I paired the SRX812P with my Yorkville 18" LS801P sub and it was magic. A single SRX812P out performed BOTH of the other main speakers I was using. I turned my old mains as far up as they would go, and the single SRX812P was so loud I couldn't hear them anymore, and it still had a LOT more headroom. The only complaint I have, and its really irrelevant, is that its not going to blow you away in the bass department. Its a great mid range speaker. That's why you pair it with the powered subs.

### ⭐⭐⭐⭐⭐ Earthquake in a box.
*by J***D on April 14, 2016*

I play drums (and run sound) for a 6-piece band, covering classic and modern rock. I was using two Peavey 118D powered subwoofers to provide the bottom end, and they did okay for indoor gigs; however, we have some outdoor gigs coming up, and I realized the 300w Peaveys weren't going to cut it. The sound guy at our church demo'd this sub for me, and I was BLOWN AWAY. As a drummer, I like fat, punchy bass, and this SRX828SP delivers. The pressure coming out of the front could resuscitate an unconscious person! Not only can this thing move serious air, the sound is very 'controlled', not boomy (with the settings we use). It's just big, fat punches to the face with each kick. I ordered this speaker used (like new) for $1,700, and paired it with two JBL PRX715 powered speakers. I hooked all three speakers up to the DBX Driverack PA+ and our band's sound has been revolutionized. Just be aware - this sub is huge, and heavy. Definitely a team lift into a truck bed. It'll likely fill a truck bed by itself, leaving little room for other equipment.

## Frequently Bought Together

- JBL Professional Compact Passive System, 18 Inch (SRX828S), Black, 18-Inch Dual Subwoofer
- GearIT 20ft, 6-Pack XLR Male to Female Mic Cable, 3-Pin Balanced Shielded, Black, for Mic Mixer, Recording Studio, Podcast
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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-05*