Electro-Voice EKX-15S - 15" Passive Subwoofer with Plywood Enclosure, Slot-in Ports, and M20 Mount

Electro-Voice EKX-15S - 15" Passive Subwoofer with Plywood Enclosure, Slot-in Ports, and M20 Mount

The Electro-Voice EKX-15S is a 15" passive subwoofer designed to deliver authoritative low-end reinforcement for portable PA systems and fixed installations. It features a 381 mm (15") EVS-15C transducer housed in a 15 mm (0.625") internally braced plywood enclosure with an EVCoat finish, optimized with slot-type ports for reduced distortion and improved bass extension. It delivers up to 133 dB SPL peak with 400 W continuous / 1600 W peak , 95 dB sensitivity, and 8 Ω nominal impedance , delivering a 40–300 Hz (-10 dB) range and 60–100 Hz (-3 dB) response. For seamless integration with full-range enclosures, it features an M20 top-mounted pole mount , dual NL4 daisy-chaining connectors , and an 18 AWG steel grille with reinforcing bar. All in a compact 455 × 530 mm (18 × 21 1/8") form factor. × 551 mm and 24.9 kg .

Main features

• LF Transducer : EVS-15C 15" (381 mm), high sensitivity and controlled punch.
• Performance : 133 dB SPL peak , 95 dB sensitivity (1 W/1 m, half-space).
• Allowable power : 400 W continuous / 1600 W peak ; 8 Ω (minimum 7.5 Ω ).
• Response : 40–300 Hz (-10 dB) / 60–100 Hz (-3 dB) .
• Recommended processing : high-pass filter at 35 Hz for protection.
• Enclosure : 15mm plywood with EVCoat and internal reinforcement.
• Ports : Oversized slot type for low distortion.
• Mounting : M20 top thread for satellite mast.
• Connections : 2 × NL4 for input and link.
• Protection : 18 AWG powder-coated steel grating with reinforcing bar.
• Dimensions and weight : 455 × 530 × 551 mm ; 24.9 kg (shipping weight 31.3 kg ).

Product benefits

• Deep, clean, and controlled bass thanks to the slot-port design and EVS-15C driver.
• Easy integration with EKX, Live X or ZLX tops using the M20 mast and NL4 cabling.
• Professional reliability : robust plywood construction, EVCoat finish and hardware designed for intensive use.
• Compact and easy-to-transport format without sacrificing sound pressure.

Use cases

• PA systems for live performances , DJs and corporate events .
• Fixed installations in clubs , halls and auditoriums that require low frequency reinforcement.
• Configurations with satellite on a mast (M20) or stacked on the ground.

Frequently Asked Questions

Which high-pass filter should I use? The manufacturer recommends a 35 Hz HPF for the EKX-15S.
How do I wire the NL4? On passive EKX models , pins 1+ and 1- are used (2+/2- are not connected).

Description for projects

Electro-Voice EKX-15S passive subwoofer with EVS-15C (15") ; 400 W continuous / 1600 W peak ; 8 Ω (min. 7.5 Ω ); sensitivity 95 dB ; 133 dB SPL peak ; 40–300 Hz (-10 dB) / 60–100 Hz (-3 dB) ; recommended HPF 35 Hz ; 15 mm plywood enclosure with EVCoat ; slot-type ports; M20 top thread ; 2 × NL4 ; 18 AWG steel grille ; dimensions 455 × 530 × 551 mm ; 24.9 kg .