Electrovoice EKX 18S

An EKX Subwoofer Designed to Complement a Cohesive Electro-Voice Sound System

The Electro-Voice EKX-18S follows a simple logic: to offer a robust, high-performance, and easy-to-deploy passive subwoofer to complement a performance-oriented sound system. In a typical setup, it reinforces the low end beneath full-range speakers to gain impact, depth, and listening comfort without pushing the tops on the most demanding frequencies. Its 18-inch format makes it a natural choice for applications where bass needs to "fill the room," while keeping size and weight still manageable for transport.

Who Is It For and What Are Its Uses? From Stage to Dancefloor

The EKX-18S is aimed at contractors, bands, DJs, bars and concert venues, houses of worship, and fixed installations seeking an 18-inch passive subwoofer capable of providing a solid foundation. It is particularly relevant whenever music demands punch (electro, hip-hop, pop, rock, amplified music) or when speech clarity must be maintained while preserving stable low-mid frequencies. Thanks to its M20 socket, it is also well suited for "stack" configurations: a sub on the floor with a satellite speaker above, for clean sound dispersion and quick setup.

Performance, Design, and Integration: Efficiency Serving the Bass

With 400 W continuous and 1600 W peak power handling, the EKX-18S is built to perform seriously when paired with appropriate amplification and coherent processing (filtering and protection). Its axial sensitivity of 96 dB and maximum SPL of 134 dB make it an effective tool for building a system with headroom, especially when the low end needs to stay firm.

An 18-Inch Driver Dedicated to the Low End

The 18-inch (457 mm) EVS-18C driver targets a bass reproduction that is both broad and controlled. The specified frequency response ranges clearly indicate its purpose: to produce the bulk of energy in the low frequencies, where a full-range system alone quickly reaches its limits in both level and endurance. For optimized use and better protection, a recommended high-pass frequency of 30 Hz is included in the implementation.

Reliable Construction and Practical Details

The 15 mm plywood enclosure with internal bracing helps limit unwanted vibrations and preserves bass accuracy, especially at high volume. The EVCoat finish, steel grille with reinforcement bars, and two handles contribute to a reassuring grip during transport and repeated assembly/disassembly. On the connection side, the two Speakon (NL4) connectors facilitate wiring and chaining depending on the chosen amplification configuration.

Technical specifications

Bluetooth

No

Model	Electro-Voice EKX-18S	Connectors	2 Speakon (NL4)
Power	400 W continuous / 1600 W peak	Enclosure	15 mm plywood with internal bracing
Max SPL	134 dB	Finish	EVCoat
Axial sensitivity	96 dB	Color	black
Nominal impedance	8 ohms (minimum 7.5 ohms)	Grille	18 AWG steel with 2 reinforcement bars, powder-coated
Frequency response (-3 dB)	50 Hz to 100 Hz	Handles	2
Frequency response (-10 dB)	35 Hz to 300 Hz	Threaded socket	M20
Recommended high-pass frequency	30 Hz	Dimensions (H x W x D)	612 x 606 x 520 mm
Driver	18-inch (457 mm) EVS-18C	Weight	31.8 kg