The Quake 18" subwoofer drivers are built for sound engineers, venue installers, and DIY cabinet builders who need reliable low-frequency reproduction for professional live sound applications. These replacement drivers deliver the foundation for custom subwoofer cabinets or breathe new life into existing enclosures.

Each 18-inch driver handles 500 watts RMS with 1000-watt peak power handling, providing the headroom needed for demanding live sound environments. The dual 90-ounce magnets and 3-inch voice coil work together to produce controlled, tight bass response down to 35 Hz.

The pressed steel chassis construction ensures durability under high-power conditions, while the paper cone design delivers natural-sounding bass reproduction with 97 dB sensitivity. The 8-ohm impedance makes these drivers compatible with most professional amplifiers and allows for flexible wiring configurations in multi-driver arrays.

These drivers work well for church sound systems, DJ setups, and live music venues accommodating 200-500 people. They're ideal for custom subwoofer cabinet construction or as direct replacements for blown drivers in existing enclosures.

Installation requires basic wiring knowledge – connect positive and negative speaker wire from your amplifier to the driver terminals. No additional crossovers or electronics are included, as these are raw drivers designed for integration into complete systems.

Seismic Audio backs each pair with a one-year warranty. At 23 pounds each, these drivers ship ready to install in your custom or existing cabinet designs.

Technical Specifications

Frequently Asked Questions

What size venues can these 18-inch subwoofer drivers handle?

Each driver's 500-watt RMS power handling and 97 dB sensitivity make them suitable for venues accommodating 200-500 people. In properly designed enclosures, a pair can provide adequate bass reinforcement for medium-sized churches, clubs, or outdoor events. For larger venues over 500 people, consider multiple pairs or higher-powered alternatives.

Do these drivers come with crossovers or enclosures?

No, these are raw drivers only. You'll need to provide your own enclosure design and crossover network if integrating with full-range speakers. Many builders use these in dedicated subwoofer cabinets with built-in high-pass filtering on the main speakers. The 8-ohm impedance works with most professional amplifiers without additional matching components.

Can I use these to replace blown drivers in existing subwoofer cabinets?

Yes, these work well as replacement drivers if your existing cabinet was designed for 18-inch woofers with similar power handling. Check that your cabinet's internal volume and port tuning (if applicable) match the Quake 18's specifications. The pressed steel chassis and mounting hole pattern fit most standard 18-inch subwoofer enclosures.

What amplifier power do I need to drive these drivers properly?

Match these with amplifiers providing 400-800 watts per channel at 8 ohms for optimal performance. The 500-watt RMS rating means they can handle continuous power at that level, while the 1000-watt peak rating provides headroom for transient peaks. Underpowering can cause distortion, while overpowering risks driver damage if driven beyond mechanical limits.

How do these compare to active subwoofers in the same price range?

These raw drivers offer more flexibility for custom installations and cabinet designs but require separate amplification and enclosures. Active subwoofers include built-in amplification and crossovers but limit your cabinet options. Choose raw drivers like these if you're building custom systems or need specific enclosure sizes that aren't available in ready-made active subwoofers.

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