JBL PRX418S - 1600W 18-inch Passive Front Loaded Subwoofer in Black Finish

The JBL Professional PRX418S is a high-power, 18-inch passive subwoofer designed to deliver deep, powerful bass in a compact, highly efficient package. Featuring a JBL Selenium 457 mm (18-inch) woofer, the PRX418S is engineered to provide exceptional low-frequency performance while maintaining a low profile. This front-loaded, vented subwoofer is ideal for a variety of applications including live sound, DJs, rental companies, and permanent installations, where powerful bass extension and clear, distortion-free sound are essential.

The PRX418S is built to handle high power levels, offering a continuous power rating of 800 watts, with a program rating of 1600 watts and a peak rating of 3200 watts over a two-hour period. This subwoofer is designed to produce deep, punchy bass with a maximum SPL of 124 dB continuous and 130 dB peak, ensuring powerful output even in large venues. The subwoofer covers a frequency range of 35 Hz to 250 Hz (-10 dB) and delivers a frequency response of 52 Hz to 120 Hz (+3 dB), making it perfect for augmenting low-end sound in conjunction with full-range loudspeakers.

The large vent area of the PRX418S reduces distortion, ensuring clean, clear bass without unwanted noise or rattles. Its low-profile, compact design allows it to be easily integrated into a variety of sound systems without taking up excessive space. The enclosure is constructed from durable birch/poplar multi-laminate plywood and coated with JBL's rugged DuraFlex finish, providing both professional aesthetics and the ability to withstand the rigors of touring and live performances.

The subwoofer includes multiple input options for versatile connectivity. It features dual Neutrik Speakon NL-2 and 1/4" TS phone combo jacks, which are wired in parallel to ensure compatibility with various cabling schemes. The PRX418S also incorporates an acoustically transparent screen-backed 16-gauge steel grille, which protects the driver while maintaining a professional, clean appearance. The system sensitivity is 95 dB SPL at 1W/1m, providing efficient bass reproduction and ensuring that the PRX418S delivers optimal sound pressure levels.

For enhanced control, the PRX418S is recommended to be used with a low-pass filter set to 35 Hz, with a subsonic high-pass filter at 24 dB/octave to avoid unnecessary low-frequency noise. It also benefits from a recommended crossover frequency of 80 Hz with a 24 - 48 dB/octave slope for smooth integration with full-range loudspeakers.

The PRX418S is equipped with top-mounted hardware for easy pole-mounting with an optional SS4-BK satellite speaker pole, making it an ideal choice for portable setups or as part of a permanent installation. Its rugged build quality, powerful low-end performance, and versatile connectivity make it a go-to solution for those in need of reliable, high-output bass reproduction in both touring and fixed environments.

Features

• 18-inch JBL Selenium SWS1000W woofer for extended low-frequency output
• Large vent area for reduced distortion and improved bass response
• Frequency range of 35 Hz to 250 Hz (-10 dB) and 52 Hz to 120 Hz (+3 dB) for deep, punchy bass
• Power rating: 800 W continuous, 1600 W program, 3200 W peak for high output capability
• Maximum SPL: 124 dB continuous, 130 dB peak for powerful sound reproduction
• Recommended crossover frequency of 80 Hz with 24-48 dB/octave slope for seamless integration with full-range speakers
• Compact and low-profile design for easy integration into sound systems
• Durable enclosure constructed of 18 mm birch/poplar plywood with rugged DuraFlex finish
• Dual Neutrik Speakon NL-2 and 1/4" TS phone combo jacks for flexible connectivity
• Top-mounted pole socket for optional SS4-BK satellite speaker pole for easy mounting
• 16-gauge steel grille with acoustically transparent black screen backing for driver protection
• Dimensions: 26.7 x 21.1 x 24.2 inches; Net weight: 79 lbs
• Optional SS4-BK satellite speaker pole for mounting

Specifications

System

• Frequency Range (-10 dB): 35 Hz to 250 Hz
• Frequency Response (+3 dB): 52 Hz to 120 Hz
• Input Connection Modes: +1/-1
• Recommended Crossover: 80 Hz, 24 - 48 dB/octave
• Recommended Filter: 35 Hz, 24 dB/octave subsonic high-pass
• Power Rating: 800 W / 1600 W / 3200 W, 2 hrs (Continuous/Program/Peak)
• Maximum SPL: 124 dB SPL continuous (130 dB SPL peak)
• System Sensitivity (1W @ 1m): 95 dB SPL; 100 dB SPL

Transducers

• LF Driver: 1 x JBL Selenium SWS1000W 457 mm (18 in) woofer
• Nominal Impedance: 8 ohms

Physical

• Mounting: Top mounted for optional SS4-BK pole
• Enclosure: Rectangular, 18 mm, birch/poplar plywood
• Finish: Black DuraFlex finish
• Grille: Powder coated, black, 16-gauge perforated steel with acoustically transparent black screen backing.
• Input Connectors: Two Neutrik Speakon NL-2 / 1/4" TS phone combo jacks
• Dimensions: 26.7 x 21.1 x 24.2 inches
• Net Weight: 79 lbs
• Optional Accessories: SS4-BK: Satellite speaker pole