JBL SRX818SP

Overview

The JBL SRX818SP is an 18-inch self-powered subwoofer system designed to deliver deep and powerful bass with a peak power output of 1000 watts. It reproduces low frequencies down to 29 Hz, making it a strong choice for professional audio setups that require impactful and clear low-end sound. This subwoofer combines efficient amplification and advanced technology to provide distortion-free bass suitable for live events, tours, and permanent installations.

Key features

• Class D amplifier delivers efficient power without compromising sound quality or reliability.
• JBL Differential Drive technology maintains clear and tight bass even at high volume levels.
• Onboard LCD screen allows easy and direct control of settings for quick adjustments on site.
• HiQnet network control supports remote management, enabling fine-tuning from a distance.
• Flexible connectivity with XLR and 1/4-inch inputs plus balanced XLR outputs for seamless integration into various sound systems.
• M20 threaded pole mount provides versatile placement options alongside other speakers for optimal sound distribution.
• Rugged plywood construction combined with ergonomic handles ensures durability and portability for frequent transport and setup.

Key specs

• Driver size: 18 inches
• Peak power output: 1000 watts
• Frequency response: down to 29 Hz
• Amplifier type: Class D
• Inputs: XLR and 1/4-inch
• Outputs: Balanced XLR
• Mounting: M20 threaded pole mount
• Construction: Plywood enclosure with ergonomic handles

Connectivity and compatibility

The SRX818SP offers versatile connectivity options that make it easy to integrate into a wide range of professional audio setups. The combination of XLR and 1/4-inch inputs accommodates different signal sources, while balanced XLR outputs allow you to link additional speakers or subwoofers. This flexibility ensures the subwoofer fits well in DJ rigs, live sound systems, and installed audio environments.

Performance and reliability

Designed for demanding professional use, this subwoofer delivers consistent and powerful bass with minimal distortion thanks to JBL’s Differential Drive technology. The Class D amplifier provides efficient power handling, reducing heat and improving reliability during extended performances. Its robust plywood cabinet protects internal components while the ergonomic handles make it easier to transport between venues.

Ideal uses and environments

The JBL SRX818SP is well suited to live music events, DJ performances, touring sound systems, and fixed installations where strong, clear bass is essential. Its ability to reproduce very low frequencies with precision makes it a valuable addition to any setup that requires impactful low-end sound. Users who need a durable, portable subwoofer with advanced control options will find this model meets those needs effectively.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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