---
product_id: 22518653
title: "Professional SRX818S Portable, Passive, Non-Powered Subwoofer System, Single 18-Inch, Black"
brand: "jbl"
price: "21647 Lei"
currency: RON
in_stock: true
reviews_count: 9
category: "Jbl"
url: https://www.desertcart.ro/products/22518653-professional-srx818s-portable-passive-non-powered-subwoofer-system-single-18
store_origin: RO
region: Romania
---

# 2400W peak power handling 135 dB max SPL output 18mm wooden enclosure durability Professional SRX818S Portable, Passive, Non-Powered Subwoofer System, Single 18-Inch, Black

**Brand:** jbl
**Price:** 21647 Lei
**Availability:** ✅ In Stock

## Summary

> 🎶 Feel the bass, lead the vibe — JBL SRX818S, where power meets precision.

## Quick Answers

- **What is this?** Professional SRX818S Portable, Passive, Non-Powered Subwoofer System, Single 18-Inch, Black by jbl
- **How much does it cost?** 21647 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/22518653-professional-srx818s-portable-passive-non-powered-subwoofer-system-single-18)

## 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

- • **Tour-Ready Durability:** Built with rugged 18mm wood and steel grilles, designed to survive the toughest gigs and tours.
- • **Effortless Portability:** Ergonomic handles and lightweight design make setup and transport a breeze—stay mobile, stay sharp.
- • **Powerhouse Performance:** Unleash thunderous bass with 2400W peak power and 135 dB SPL—own the room, every time.
- • **Precision Low-End Clarity:** 28-150 Hz frequency range delivers deep, punchy lows that make your sound unforgettable.
- • **Seamless System Integration:** Pairs perfectly with JBL SRX series speakers for a pro-grade, customizable sound experience.

## Overview

The JBL Professional SRX818S is a passive 18-inch subwoofer engineered for high-impact, professional audio applications. Delivering up to 2400W peak power and 135 dB SPL, it offers deep, precise bass across a 28-150 Hz frequency range. Its rugged 18mm wooden enclosure with steel grilles and DuraFlex finish ensures durability for touring and installations. Designed for easy transport with ergonomic handles and versatile mounting options, it integrates seamlessly with JBL SRX series speakers to elevate live performances, corporate events, and worship spaces.

## Description

Introducing the JBL Professional SRX818S, the ultimate passive single 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 SRX818S 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 SRX818S features an 18” woofer with an 8 Ohm impedance, capable of handling 2400W Peak, 1200W Program, and 600W Continuous power. With a frequency range of 28Hz-150Hz and a frequency response of 45Hz-150Hz, it ensures that every beat and note is reproduced with exceptional accuracy. The subwoofer can achieve a maximum SPL of 129dB, 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 SRX818S 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 SRX818S 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, Single 18 Inch Subwoofer System. Technical specifications: 135 dB maximum SPL output. 8 ohm. 28-150 Hz frequency range; 45-150 Hz frequency response; Power Rating of 600W continuous, 1200W program, 2400W 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 mount / tripod mounts support a wide array of configurations.
- JBL’s patented Differential Drive Technology incorporate 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 | B013JKHT2O |
| Audio Driver Size | 18 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #39,678 in Musical Instruments ( See Top 100 in Musical Instruments ) #152 in Stage Subwoofers #23,437 in Music Recording Equipment |
| Color | Black |
| Color Name | Black |
| Compatible Devices | Amplifier |
| Control Method | App |
| Customer Reviews | 4.2 4.2 out of 5 stars (110) |
| Date First Available | August 7, 2015 |
| Global Trade Identification Number | 00691991001659 |
| Impedance | 8 Ohms |
| Included Components | [Subwoofer] |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | FALSE |
| Item Weight | 78 pounds |
| Item model number | SRX818S |
| Manufacturer | JBL |
| Material | Engineered Wood |
| Material Type | Engineered Wood |
| Model Name | SRX835 |
| Mounting Type | Floor Standing |
| Number Of Circuits | 1 |
| Number of Items | 1 |
| Number of Power Levels | 2 |
| Power Source | Corded Electric |
| Product Dimensions | 22.6"D x 26.9"W x 26.9"H |
| Recommended Uses For Product | For Surround Sound Systems |
| Series Number | 818 |
| Set Name | Single-item set |
| Shape | Rectangular Prism |
| Signal-to-Noise Ratio | 135 dB |
| Size | 18-Inch Single Subwoofer |
| Speaker Amplification Type | Passive |
| Speaker Count | 1 |
| Speaker Size | 18 Inches |
| Speaker Type | Passive Subwoofer |
| Special Feature | Portable |
| Specific Uses For Product | Musicians, bands, and DJs; concert use; public speaking; performance venues, corporate spaces, educational facilities, and houses of worship |
| Style | Passive |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 18 Inches |
| Surround Sound Channel Configuration | 2.0 |
| UPC | 691991001659 |
| Unit Count | 1.0 Count |
| Warranty Type | Limited Warranty |
| Wattage | 2400 watts |
| Wireless Communication Technology | No Wireless Communication Technology |
| Woofer Diameter | 18 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** JBL
- **Connectivity Technology:** XLR
- **Frequency Response:** 45 Hz
- **Speaker Maximum Output Power:** 2400 Watts

## Images

![Professional SRX818S Portable, Passive, Non-Powered Subwoofer System, Single 18-Inch, Black - Image 1](https://m.media-amazon.com/images/I/91kZ0uZHc4L.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 JBL SRX818s Passive System Black, 18-Inch Single Subwoofer
- GearIT 20ft, 6-Pack XLR Male to Female Mic Cable, 3-Pin Balanced Shielded, Black, for Mic Mixer, Recording Studio, Podcast
- AuxLink XLR Cables, XLR Microphone Cable 25 ft 6 Pack, Gold-Plated 3-pin XLR Speaker Cable Male to Female Balanced Mic Cable

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-23*