The JBL Professional VLA-C125S-BK is a high-output, 1600W passive subwoofer designed to provide exceptional low-frequency reinforcement in a line array system. Featuring dual 15-inch Differential Drive transducers, the VLA-C125S-BK delivers powerful, deep bass, ideal for large-scale permanent installation applications such as concert venues, theaters, and arenas. Its robust design and advanced component technology ensure high performance, even in demanding outdoor environments. With its IP55 rating, the subwoofer is protected against dust and water, making it a reliable solution for both indoor and outdoor use, even in harsh conditions.
The VLA-C125S-BK is engineered with JBL's proven Differential Drive technology, which uses dual 15-inch woofers, each equipped with two 3-inch voice coils. This design not only allows for a higher power rating but also provides greater efficiency and durability. The transducers are direct-cooled to maintain optimal performance under heavy usage, ensuring a consistent output over extended periods. The fiberglass enclosure, reinforced with 18mm birch plywood internal bracing, provides an incredibly sturdy and acoustically optimized housing for the components. The external finish is a gelcoat fiberglass, which is weather-resistant and designed to withstand the rigors of outdoor use.
For outdoor applications, the VLA-C125S-BK features a hydrophobic mesh underlayer, a waterproof rail system, and a rugged, weather-resistant grille. The grille is a powder-coated 14-gauge hex-perforated steel with a zinc under-coating, ensuring that the speaker is both acoustically transparent and physically protected from the elements. Additionally, the speaker's IP55 rating per IEC529 guarantees that it is dust-protected and resistant to water jets, making it a suitable option for environments with high moisture or exposure to the elements.
The VLA-C125S-BK offers a wide frequency range from 52 Hz to 210 Hz (-10 dB), with a frequency response of 62 Hz to 123 Hz (±3 dB). The subwoofer's maximum SPL output reaches 133 dB peak at 1 meter, ensuring it can provide the deep, impactful bass needed for large audiences. The system sensitivity is rated at 98 dB (52 Hz - 210 Hz, 283V), making it highly efficient and capable of achieving impressive sound pressure levels. The low-frequency driver's power rating is 1400W continuous with a peak power rating of 1700W, allowing for excellent performance under demanding conditions. The VLA-C125S-BK is optimized for use with Crown DCi amplifiers, including the DCi 2 | 2400 and DCi 4 | 2400 models, which are equipped with onboard DSP for optimal frequency management.
With its integrated rigging system, the VLA-C125S-BK is easy to incorporate into a line array configuration. The array's inter-box angles are selected during assembly, and additional accessories, such as the VLA-C-SB Suspension Bar Kit, are available to enhance installation flexibility. The subwoofer is equipped with multiple connection terminals, including barrier strip terminals for spade lugs, with touch-proof covers for added safety. The included accessories package comes with bracket plates, stainless steel bolts, and trim cover panels for securing the speaker in place. Optional accessories such as the suspension bar kit and screw pin shackles are available for more advanced rigging setups.
Features
Specifications
System
Transducers
Physical