JBL PRX915XLF B-Stock Powered Subwoofer

The PRX915XLF is a compact yet powerful 15-inch powered subwoofer engineered for portable sound systems that demand serious low-end extension without excessive footprint. Its Class D amplifier delivers authoritative bass response while the fanless cooling design keeps the cabinet silent during operation, making it equally suited to live sound reinforcement, DJ setups, and studio monitoring applications.

Amplification & Output

Built-in Class D amplifier rated at 1000W RMS / 2000W Peak powers the 915SG 15-inch woofer with a 3-inch voice coil and ferrite magnet. The system achieves 131 dB SPL peak, providing sufficient headroom for mid-sized venues and outdoor events without distortion at typical operating levels.

Connectivity & Control

Dual balanced combo inputs (XLR/jack) accommodate both XLR and 1/4-inch connections, with 2x XLR pass-through outputs for daisy-chaining additional subwoofers or speakers. The integrated DSP includes 6-band EQ, selectable 80Hz / 100Hz / 120Hz crossover frequencies, 20ms delay, feedback destroyer with dbx DriveRack technology, and limiter; Bluetooth Low Energy control via the JBL Pro Connect app enables remote adjustments of up to 10 speakers without physical access to the unit.

Key Features

• 15-inch powered subwoofer with Class D amplifier
• 1000W RMS / 2000W Peak power rating
• 131 dB SPL peak maximum output
• 40–87 Hz (−3 dB) / 36–98 Hz (−10 dB) frequency range
• 4Ω impedance rated design
• 18mm birch cabinet with optimized bracing and DuraFlex finish
• Dual balanced combo inputs + XLR pass-through outputs
• 6-band parametric EQ, feedback destroyer, 20ms delay, limiter
• Selectable 80Hz / 100Hz / 120Hz crossover frequencies
• Fanless Class D amplifier for silent cooling operation
• Bluetooth Low Energy control via JBL Pro Connect app (up to 10 units)
• 480 × 580 × 549 mm dimensions; M20 pole mount + carrying handles

The PRX915XLF combines portable form factor with professional-grade low-frequency control, making it a reliable choice for engineers and operators who require flexible EQ shaping, straightforward I/O, dependable output, and seven-year manufacturer warranty support in a relatively compact subwoofer.

As a B-Stock instrument it carries a minor cosmetic blemish with no effect on playability, tone or structure, which is why it sells for less than a first-quality unit. It is new, unplayed and covered by the full manufacturer warranty.