What power handling does the ASB7128 support?

Peak power handling is 16,000 W with a sustained 2400 W long-term rating over 100 hours, enabling continuous output of 135 dB-SPL at 1 meter across the bass range.

What connectivity options does it have?

The subwoofer features NL4 Neutrik Speakon terminals and covered barrier strip connectors accepting up to 10 AWG wire or 9 mm spade lugs for flexible amplifier integration.

How is it built for touring and outdoor use?

The cabinet is constructed from 16 mm exterior-grade 11-ply birch plywood with DuraFlex black finish and a 14-gauge perforated steel grille; 16-point M10 suspension hardware supports secure rigging for transport and installation.

What frequency range does it cover?

The ASB7128 covers 20 Hz to 1 kHz (at -10 dB), with maximum SPL of 135 dB continuous and 141 dB peak at 25–200 Hz, delivering extended deep bass without sacrificing articulation.

Can it run in different impedance modes?

Yes; the dual voice coil design supports either 4 ohms in parallel-drive mode or 2 x 8 ohms in discrete-drive mode for flexible amplifier and system configuration.

Do I pay sales tax on this order?

We collect sales tax only on orders shipped to California. Orders shipped to any other US state are charged $0 sales tax at checkout when you buy direct from our website. On this item that is roughly $574 less out the door than the same listed price at a national retailer or on a marketplace. Marketplaces such as eBay, Reverb and Amazon collect sales tax in nearly every state as marketplace facilitators no matter who the seller is, so the same item at the same price costs less bought direct. Free US shipping and 30-day returns are included. Some states ask buyers to self-report use tax on out-of-state purchases.

JBL ASB7128 Dual 18" Subwoofer

The ASB7128 is a full-range dual 18" subwoofer engineered for demanding live sound and installed system applications where deep, controlled bass reproduction is non-negotiable. Built with JBL's professional-grade engineering and materials, this cabinet delivers the output and excursion needed for large-venue reinforcement without sacrifice to reliability or frequency accuracy.

Power & Output Capability

Peak power handling reaches 16,000 W with a sustained 2400 W long-term rating over 100 hours, enabling this subwoofer to sustain continuous output of 135 dB-SPL at 1 meter across the critical bass range. The dual 2269H Ultra Long Excursion 18" woofers with 89 mm peak-to-peak maximum excursion ensure tight, articulate low-end response without bottoming out under extreme demand.

Design & Construction

The cabinet is engineered from 16 mm exterior grade 11-ply birch plywood with a durable DuraFlex™ black finish, reinforced by a 14-gauge perforated steel grille with acoustically transparent foam backing. Suspension points at 16 locations with M10 threaded hardware support secure rigging, while NL4 Neutrik Speakon® and covered barrier strip terminals (accepting up to 10 AWG wire or 9 mm spade lugs) provide professional connectivity options for touring and permanent venues.

Key Features

2x JBL 2269H Ultra Long Excursion 18" Differential Drive woofers with dual voice coils and dual gaps
Neodymium magnet design with Vented Gap Cooling™ technology
Peak-to-peak maximum excursion: 89 mm (3.5")
Transducer Power Rating: 4000 W (16,000 W peak), 2 hrs
Long-Term System Power Rating: 2400 W (9600 W peak), 100 hrs
Maximum SPL: 135 dB-SPL continuous / 141 dB peak at 25 Hz – 200 Hz
System Sensitivity: 99 dB-SPL, 1W @ 1m
Frequency Range (-10 dB): 20 Hz – 1 kHz
Impedance: 4 ohms parallel-drive mode or 2 x 8 ohms discrete-drive mode
16 mm exterior grade 11-ply birch plywood cabinet with DuraFlex™ finish
16-point suspension attachment with M10 threaded hardware (4 top, 4 bottom, 4 each side)
Dimensions: 1092 x 560 x 815 mm (43.0 x 22.0 x 32.1 in vertical orientation)

The ASB7128 combines raw output capability with the durability and connectivity standards required for professional touring and permanent installation environments.

Condition	New
Country of Manufacture	Mexico