The Quake 18 is built for sound engineers, cabinet builders, and venue owners who need a dependable 18-inch subwoofer driver for custom PA builds or speaker repairs. Whether you're building a ground-up sound system or replacing a blown driver, this steel-frame woofer delivers the low-end foundation your system demands.

This driver handles 500 watts RMS with 1000-watt peak capacity, pushing deep bass down to 35Hz through its paper cone and 3-inch voice coil design. The 90-ounce magnet structure provides the magnetic force needed to move serious air, while the pressed steel chassis ensures the driver stays stable under high power levels.

At 97dB sensitivity and 8-ohm impedance, the Quake 18 pairs efficiently with most amplifiers and crossover networks. The 35Hz-3kHz frequency response covers the crucial sub-bass and low-midrange spectrum where you feel the kick drum and bass guitar. At 23 pounds, this driver has the mass needed for extended low-frequency output without cabinet rattling.

Build custom subwoofer enclosures for medium to large venues, outdoor festivals, or church sound systems. Replace failed drivers in existing 18-inch cabinets from any manufacturer. The driver works in ported, sealed, or bandpass enclosure designs depending on your application.

Standard speaker terminals accept banana plugs, spade connectors, or bare wire connections. The driver ships ready to install with mounting hardware sold separately.

Seismic Audio backs the Quake 18 with a one-year warranty and direct shipping. Professional-grade components at a price that makes sense for working sound companies.

Technical Specifications

Frequently Asked Questions

What size venue can this 18-inch driver handle?

In a properly designed enclosure with adequate amplification, the Quake 18 can provide sub-bass for venues up to 500 people for live music or DJ applications. For outdoor events or higher SPL requirements, consider multiple drivers or larger magnet structures. The 500-watt RMS rating gives you headroom for dynamic musical content without distortion.

What amplifier power do I need to drive this driver?

Match this driver with amplifiers rated between 400-600 watts RMS at 8 ohms for optimal performance. Running less power won't damage the driver but limits your dynamic range. Avoid amplifiers significantly over 1000 watts peak to prevent voice coil damage during extended high-volume use.

Can I use this to replace drivers in existing speaker cabinets?

Yes, the Quake 18 uses standard 18-inch mounting dimensions and will fit most commercial 18-inch subwoofer enclosures. Verify the original driver's impedance matches the 8-ohm rating and check that your crossover network is compatible with the 35Hz-3kHz frequency response. Thiele-Small parameters may differ from your original driver, potentially affecting enclosure tuning.

What cables and connections does this driver need?

The driver uses standard positive and negative speaker terminals that accept banana plugs, spade connectors, or bare wire up to 12 AWG. You'll need speaker cable from your amplifier or crossover network to the driver terminals. No special connectors or adapters are required - this is a passive driver that connects like any other speaker.

How does this compare to smaller 15-inch subwoofer drivers?

The 18-inch driver moves more air and extends deeper into sub-bass frequencies than 15-inch alternatives, making it better for large venues and outdoor applications. The trade-off is increased weight, cabinet size, and cost. Choose 15-inch drivers for portable systems or smaller venues where cabinet size and weight matter more than ultimate low-end extension.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov