JBL STX828S Dual 18-Inch Bass-Reflex Subwoofer

JBL STX828S Dual 18-Inch Bass-Reflex Subwoofer

The JBL STX828S 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 STX828S is a passive dual 18-inch bass-reflex subwoofer with two Super Vented Gap woofers, 2000 W continuous handling and 138 dB peak output for large touring and installation systems. 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 STX828S is built for systems where sub-bass must be felt as well as heard. Its large birch and poplar enclosure, steel grille and dual NL4 connectors suit rental inventories and fixed installations alike. 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

• Dual 18-inch woofers: Two Super Vented Gap woofers.
• 2000 W continuous: 2000 W continuous, 4000 W program and 8000 W peak handling.
• 138 dB peak SPL: Very high peak output.
• Dual NL4 connectors: Two NL4 connectors for flexible wiring.
• Touring enclosure: DuraFlex-coated birch and poplar plywood with a steel grille.

Best Suited For

The JBL STX828S suits concert PA, large venues, rental companies and houses of worship that need a high-output passive subwoofer. The JBL STX828S 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

Drive the STX828S from a suitable professional amplifier via its NL4 connectors, set the system crossover, and floor-place the cabinet where the system design requires. Two people should handle the 82 kg cabinet. 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 STX828S you receive is the right fit for your system.

Frequently Asked Questions

Is the STX828S powered?

No, it is a passive subwoofer.

How many connectors does it have?

Two NL4 connectors.

How heavy is it?

82 kg, so two-person handling is recommended.

Technical Specifications

Explore Related Products

See also this related JBL listing on Pro Audio Video: JBL EON612 Powered PA Speaker. For the manufacturer’s own specification detail, see the official or retailer specification page for the JBL STX828S here: JBL STX828S specifications.