Avante Audio A18S

The Avante Audio A18S is an 18-inch powered subwoofer from the Achromic Series, built to add deep, powerful bass to any sound system. A 1600 W peak Class D amplifier drives an 18-inch woofer with a 3-inch voice coil, delivering down to 35 Hz and up to 127 dB of peak output, with built-in DSP for tuning and advanced array configurations.

Highlights

• 18-inch woofer with 3-inch voice coil
• 1600 W peak / 500 W RMS Class D amplifier
• 35 Hz to 150 Hz frequency range
• 127 dB peak SPL at 1 meter
• DSP with LCD, EQ, delay, polarity, and crossover settings
• Normal, cardioid, and endfire location presets; pole mount for satellites

Avante Audio A18S: Deep Bass for DJs and Bands

Full-range speakers can only go so low. Adding a subwoofer takes the low-frequency load off your main speakers, so they play cleaner and louder, while the sub delivers the chest-thumping bass that makes dance music, live drums, and bass guitar feel powerful. The A18S’s large 18-inch woofer moves plenty of air, reaching down to 35 Hz for deep, impactful low end.

The 15 mm plywood enclosure is built for the road, and a pole mount on top lets you place a full-range speaker such as the Avante A12 directly above the sub for a compact, stacked system.

A18S DSP and Array Modes

The A18S’s onboard DSP offers more than basic EQ. Adjust delay, polarity, and crossover to align the subwoofer with your main speakers. Choose normal or enforce modes, and select normal, cardioid, or endfire location presets to control how bass spreads around the room. Cardioid and endfire arrays can reduce bass on stage while keeping it strong in the audience, an advanced feature usually found on more expensive subwoofers.

Setting Up the A18S

Place the subwoofer on the floor near the main speakers. Connect your mixer to the sub’s inputs, then send the sub’s high-pass output to your full-range speakers so they don’t have to reproduce the deepest bass. Set the crossover so the sub and mains blend smoothly, then adjust the sub level to taste. Placing subs against a wall or in a corner increases bass output.

What to Pair With the A18S

The A18S pairs naturally with Avante Achromic full-range speakers such as the A12 or A15. A pair of subs with a pair of tops makes a powerful system for DJs, bands, and events. Add speaker poles, padded covers, and quality XLR cables to complete the setup.

Avante Audio A18S FAQ

Can I use the A18S with other brands of speakers? Yes. Any powered or amplified full-range speaker can be fed from the A18S’s outputs.

What are cardioid and endfire modes? They’re array settings that use multiple subwoofers to steer bass toward the audience and reduce it behind the subs, which helps keep stages and neighbors quieter.

Avante Audio A18S Specifications at a Glance

• Driver: 18-inch woofer, 3-inch voice coil
• Amplifier: 1600 W peak / 500 W RMS, Class D
• Frequency range: 35 Hz to 150 Hz
• Peak SPL: 127 dB at 1 m
• DSP: LCD, EQ, delay, polarity, crossover; normal/cardioid/endfire presets
• Enclosure: 15 mm plywood
• Weight: about 73 lb (33.1 kg)

Who Buys the Avante Audio A18S

• Mobile DJs and party entertainers
• Bands needing deep bass for kick drum and bass guitar
• Venues, churches, and event spaces
• Rental and production companies

Why Buy the Avante Audio A18S From Metro Sound & Lighting

Metro Sound & Lighting isn’t a catalog-only retailer. We sell, install, and service pro audio in-house, so our team can help you match the A18S with the right top speakers, set up its DSP for your room, and support your system after the sale. We design sound systems for churches, schools, and venues and offer B2B and integrator pricing on volume orders.

Browse more options in our Powered Subwoofers category, or see the full specifications on the official Avante Audio A18S product page.