JBL VLA-C125S – Dual 15" Subwoofer Line Array Module

Product Overview

The JBL VLA-C125S is a dual 15-inch subwoofer line array module engineered for permanent installation in arenas, stadiums, outdoor amphitheaters, and other large-venue commercial sound reinforcement systems. As the dedicated low-frequency component of the JBL VLA Compact Series, it delivers a frequency range of 52 Hz to 210 Hz with 127 dB continuous and 133 dB peak SPL, providing the sub-bass foundation that full-range line array modules cannot cover alone. The IP55-rated fiberglass enclosure makes it a practical choice for both indoor rigging and exposed outdoor installations. System designers specifying a JBL VLA Compact Series subwoofer for high-output permanent-install work will find the VLA-C125S purpose-built for that role.

Product Description

The VLA-C125S employs two JBL 2275H 15-inch Differential Drive woofers, each built around dual 3-inch voice coils wound on aluminum formers and driven by neodymium magnets. The Differential Drive topology splits motor force across two independent voice coils, improving thermal management under sustained high drive levels and reducing power compression during long operating periods — a critical advantage in permanent-install subwoofer arrays that run for hours at high output.

Power handling is rated at 1,600 W RMS and 6,400 W peak into a 4-ohm nominal load, with sensitivity of 98 dB (2.83 V / 1 m). This combination supports efficient pairing with Crown DCi Series amplifiers using onboard DSP for crossover, limiting, and array processing. The enclosure is constructed from multi-layer fiberglass with internal birch plywood bracing, finished with a powder-coated 14-gauge steel grille backed by hydrophobic acoustic mesh — the assembly meets IP55 for dust ingress and water jet protection, covering outdoor rigging in all but the most extreme weather conditions.

An integrated rigging system supports multiple inter-enclosure angle configurations. The optional cardioid accessory kit enables cardioid subwoofer array operation, placing a reverse-oriented module to cancel rear-hemisphere output and improve stage wash control — a technique increasingly specified in large-venue commercial sound reinforcement where low-frequency rear bleed onto stage microphones is a concern. The VLA-C125S arrays directly alongside the VLA-C2100 (100° horizontal) and VLA-C265 (65° horizontal) full-range modules, making it the correct subwoofer choice for any JBL VLA Compact Series system design.

Key Features

• Dual 2275H Differential Drive Woofers — Two 15-inch drivers with dual 3-inch voice coils and neodymium magnets provide deep bass with reduced power compression under sustained drive.
• 52 Hz – 210 Hz Frequency Range — Covers the full sub-bass and upper bass region needed to complement VLA Compact full-range modules in large-venue systems.
• 127 dB Continuous / 133 dB Peak SPL — Output levels sufficient for open-air stadiums, large arenas, and outdoor festival reinforcement.
• 1,600 W RMS / 6,400 W Peak Power Handling — Matches efficiently with Crown DCi 2-channel amplifiers at 4-ohm nominal impedance.
• IP55-Rated Enclosure — Multi-layer fiberglass shell with birch plywood bracing and hydrophobic steel grille mesh rated for outdoor permanent installation.
• Cardioid Array Capable — Optional accessory kit enables cardioid subwoofer configuration for controlled rear rejection and reduced stage low-frequency bleed.
• Integrated Rigging System — Multiple inter-enclosure angle configurations support flexible subwoofer cluster and line array subwoofer arrangements.
• VLA Compact Series Integration — Designed to combine with VLA-C2100 and VLA-C265 full-range modules for complete, scalable large-venue arrays.
• Black Finish (-BK) — Low visual profile suited to dark trusses, black steel rigging, and venues where hardware visibility is a design consideration.

Typical Applications

• Arenas and stadiums requiring high-output sub-bass reinforcement in permanent rigged arrays
• Outdoor amphitheaters and large multi-purpose venues with permanent sound system infrastructure
• Houses of worship with large sanctuaries and high-output installed sound systems
• Auditoriums and performing arts centers specifying JBL VLA Compact Series line arrays
• Cardioid subwoofer arrays in commercial sound reinforcement where stage bleed control is required

Technical Specifications

Frequently Asked Questions

What full-range modules is the VLA-C125S designed to pair with?
It is the dedicated subwoofer for the JBL VLA Compact Series and arrays directly with the VLA-C2100 (100° horizontal) and VLA-C265 (65° horizontal) full-range modules. Both full-range modules are available at creationnetworks.net.

What amplifier does JBL recommend for the VLA-C125S?
JBL specifies the Crown DCi 2-channel amplifier with onboard DSP. The DCi platform provides the crossover, limiting, and array processing needed for the VLA Compact Series.

Can the VLA-C125S be configured for cardioid operation?
Yes. An optional cardioid accessory kit enables a reverse-mount cardioid configuration that cancels rear-hemisphere low-frequency output. This is commonly specified in large-venue installs to reduce low-frequency bleed onto the stage and into stage microphones.

Is the VLA-C125S suitable for outdoor permanent installation?
Yes. The IP55-rated fiberglass enclosure with hydrophobic mesh grille provides protection against dust ingress and water jets, making it appropriate for outdoor rigged installations such as stadiums, amphitheaters, and open-air performance venues.

How many subwoofer modules are typically used per system?
The number of VLA-C125S modules depends on venue size, target SPL, and whether cardioid operation is required. Cardioid arrays require modules in pairs (forward + reverse). System design should include acoustic modeling; contact the Creation Networks team at creationnetworks.net for array design consultation.

What is the difference between the black (–BK) and gray (–GR) finish?
The two finish variants are acoustically and mechanically identical. Finish selection is based on venue aesthetics: black suits dark trusses and ceilings; gray suits lighter architectural environments.

What is the warranty and support structure for JBL Professional products?
JBL Professional products carry a standard manufacturer warranty. Creation Networks provides pre-sale specification support and post-sale assistance for JBL Professional installations. Contact us at creationnetworks.net.