--- product_id: 725058332 title: "JBL Professional Jbl Srx818Sp Portable 18\" Self-Powered Subwoofer System Dual Black" brand: "jbl" price: "R42159" currency: ZAR in_stock: false url: https://www.desertcart.co.za/products/725058332-jbl-professional-jbl-srx818sp-portable-18-self-powered-subwoofer-system store_origin: ZA region: South Africa --- # JBL Professional Jbl Srx818Sp Portable 18" Self-Powered Subwoofer System Dual Black **Brand:** jbl **Price:** R42159 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** JBL Professional Jbl Srx818Sp Portable 18" Self-Powered Subwoofer System Dual Black by jbl - **How much does it cost?** R42159 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/725058332-jbl-professional-jbl-srx818sp-portable-18-self-powered-subwoofer-system) ## Best For - jbl enthusiasts ## Why This Product - Trusted jbl brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Introducing JBL Professional SRX828S The ultimate passive double 18" subwoofer designed for concerts, tours and installations. Whether you need a robust sound system for musicians, bands, DJs, or in public talking areas, performance venues, corporate spaces, educational facilities, or worship offices, the SRX828S is the solution you can count on. This subwoofer is designed to deliver powerful, accurate low-frequency sound that enhances your audio experience with unparalleled clarity and depth. The SRX828S features two 18" woofers with 8 ohm impedance, capable of handling 4800W peak, 2400W programs, and 1200W continuous power. With a 30Hz-150Hz frequency range and 47Hz-120Hz frequency response ensures every beat and note is reproduced with exceptional precision. The subwoofer can achieve SPL of up to 141dB and is ideal for high energy performance and large venues. The 18mm wood enclosure, 14 gauge steel grille, and patented DuraFlex finish ensure durability and longevity even in the toughest environments. Designed with convenience in mind, the SRX828S includes a standard M20 pole cup that integrates easily into the top box and index foot for secure stacking in both standard and cardioid positions. Combined with the JBL SRX812, SRX 825, SRX 835 speaker system for optimal performance and sound coverage. The subwoofer is fully supported by Audio Architect to provide seamless control and customization. Ergonomically designed handles ensure a comfortable grip for easy carrying and setup. Enhance your sound system with the JBL Professional SRX828S subwoofer and experience the perfect blend of power, precision, and durability. Whether you're preparing for a concert, corporate event, or other performance, this subwoofer is designed to exceed expectations ## Technical Specifications | Specification | Value | |---------------|-------| | Speaker Size | 18 Inches | | Audio Sensitivity | 141 Decibels | | Batteries Required | No | | Item Model Number | SRX828S | | Wattage | 4800 W | | Product Dimensions | 68.05 x 120.45 x 57.33 cm; 62.14 kg | ## Product Details - **Brand:** JBL - **Speaker Maximum Output Power:** 4800 Watts - **Mounting Type:** テーブルトップマウント - **Unit Count:** 1.0 Count - **Item Weight:** 62.14 kg ## Images ![JBL Professional Jbl Srx818Sp Portable 18" Self-Powered Subwoofer System Dual Black - Image 1](https://m.media-amazon.com/images/I/81cdLUsBTWL.jpg) ![JBL Professional Jbl Srx818Sp Portable 18" Self-Powered Subwoofer System Dual Black - Image 2](https://m.media-amazon.com/images/I/81wng6Xt6YL.jpg) ![JBL Professional Jbl Srx818Sp Portable 18" Self-Powered Subwoofer System Dual Black - Image 3](https://m.media-amazon.com/images/I/81PNw5Uc4uL.jpg) ![JBL Professional Jbl Srx818Sp Portable 18" Self-Powered Subwoofer System Dual Black - Image 4](https://m.media-amazon.com/images/I/71DHSthGvML.jpg) ![JBL Professional Jbl Srx818Sp Portable 18" Self-Powered Subwoofer System Dual Black - Image 5](https://m.media-amazon.com/images/I/A1ClgkDVYZL.jpg) ## 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 ## 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 - Gearlux XLR Microphone Cable, Fully Balanced, Male to Female, 10 Feet - Single Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/725058332-jbl-professional-jbl-srx818sp-portable-18-self-powered-subwoofer-system](https://www.desertcart.co.za/products/725058332-jbl-professional-jbl-srx818sp-portable-18-self-powered-subwoofer-system) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-04-24*