JBL SRX818SP 18-Inch Powered Subwoofer

JBL SRX818SP 18-Inch Powered Subwoofer

The JBL SRX818SP is a JBL product built around the company’s long experience in professional and personal audio, and it is offered here at Pro Audio Video at the sheet price shown on this listing. The SRX818SP is a powered 18-inch subwoofer from the SRX800 series, with Crown amplification, HiQnet control and an LCD screen, delivering deep bass without a separate amplifier. Buyers choosing this model get a product whose headline specifications are published by JBL and by independent retailers, so the key numbers on this page can be checked against the official and retailer sources linked below rather than taken on trust.

Why Choose This Model?

The SRX818SP simplifies system building: the amplifier, crossover and control are built in, so a venue or rental company can add sub-bass to SRX800 full-range cabinets with minimal extra equipment. This model sits in a catalogue where JBL’s naming is precise, and that precision matters when you are matching a loudspeaker to an amplifier, an earbud to a phone, or a subwoofer to a room. This listing states the model, the colour where the sheet names one, and the exact sheet sale price and MRP, so what you order is the variant described here. It is supplied as a new retail product through the store’s normal ordering route, and the specifications table at the bottom of this page gives the figures a buyer or installer actually needs before committing.

Key Features

• 18-inch powered subwoofer: A single 18-inch driver with built-in Crown amplification.
• 1000 W peak output: 1000 W peak power for high-output bass.
• HiQnet control: Network control and monitoring via HiQnet.
• LCD screen: On-board display for setup and status.
• 135 dB peak SPL: High peak output for large rooms.

Best Suited For

The JBL SRX818SP suits live venues, mobile DJs, rental companies and houses of worship that want a powered 18-inch subwoofer with network control. The JBL SRX818SP is a sensible shortlist choice for anyone who already knows they want JBL sound and wants the specific combination of size, power handling or battery life that this model offers, rather than a generic alternative. It suits buyers who value published specifications, a recognisable model lineage, and a purchase from a specialist Indian audio-video store that lists the product with its full model name and colour.

Setup and Connection Guide

Connect the full-range signal to the SRX818SP inputs, select the crossover and polarity from the rear panel or HiQnet control, and place the cabinet on the floor beneath or beside the main loudspeakers. As with any audio purchase, check the connections and the space available before ordering: confirm the amplifier, receiver or phone it will pair with, confirm the physical dimensions against the installation or carrying space, and keep the original packaging until the product has been tested. For full setup detail, follow the official documentation linked below, which is the authoritative source for this model. If anything about compatibility is unclear, ask the store before ordering so the JBL SRX818SP you receive is the right fit for your system.

Frequently Asked Questions

Is the SRX818SP powered?

Yes, it has built-in Crown amplification.

What is its low-frequency range?

29 Hz – 150 Hz at -10 dB.

Can it be networked?

Yes, it supports HiQnet control.

Technical Specifications

Explore Related Products

See also this related JBL listing on Pro Audio Video: JBL EON612 Powered PA Speaker.