Quake 12″ Steel Frame Speaker Driver 4 Ohm (Pair)

The Quake 12″ Steel Frame Speaker Driver delivers reliable performance for musicians, sound techs, and cabinet builders who need professional-grade replacement woofers or components for custom speaker builds. This 4-ohm driver pair handles the demanding low-frequency work that defines solid live sound reinforcement.

Each 12″ woofer delivers 150 watts RMS with 300 watts peak power handling, backed by a robust 50oz magnet and 2.5″ voice coil design. The pressed steel chassis provides the structural integrity needed for consistent performance under load, while the paper cone construction offers natural midrange response that works well in multi-driver configurations.

With 97dB sensitivity and 55Hz to 5kHz frequency response, these drivers excel in PA applications where punchy low-end and clear midrange matter most. The 4-ohm impedance makes them ideal for parallel wiring configurations or direct replacement in existing 4-ohm speaker systems.

These woofers work well in medium-sized venues seating 150-400 people, whether you’re building custom PA cabinets, replacing blown drivers in existing speakers, or creating dedicated floor monitors. They pair effectively with compression drivers in two-way systems or handle dedicated low-frequency duties in multi-driver arrays.

Each driver weighs 10 pounds and arrives ready to install with standard mounting hardware compatibility. You receive both speakers in the pair, allowing for matched stereo configurations or dual-cabinet setups.

Seismic Audio backs each pair with a one-year warranty and direct shipping. Professional-grade components at accessible pricingthat’s the Seismic Audio approach.

Technical Specifications

Frequently Asked Questions

What size venues can these 12″ drivers handle?

These Quake 12″ drivers work well in venues seating 150-400 people when properly amplified and configured in appropriate cabinets. For smaller coffee shops or practice spaces, a single pair provides adequate coverage. Larger venues benefit from multiple pairs in distributed speaker systems or line array configurations.

Can I use these as direct replacements in my existing PA speakers?

Yes, if your current speakers use 4-ohm, 12″ drivers with standard mounting patterns. Check your existing driver’s impedance rating firstmixing impedances can damage your amplifier. These drivers fit most standard 12″ cutouts and use common bolt patterns found in PA speaker cabinets.

Do I need additional drivers to build a complete PA speaker?

For full-range PA applications, you’ll want to pair these woofers with compression drivers and appropriate crossovers to handle high frequencies above 5kHz. These drivers excel at low and midrange frequencies but need tweeters or horns for complete frequency coverage in live sound applications.

What amplifier power do I need to drive these properly?

Match these drivers with amplifiers providing 100-200 watts RMS per channel at 4 ohms for optimal performance. Under-powering leads to distortion at higher volumes, while over-powering risks driver damage. Most professional power amps in this range work well with proper gain staging.

How do these compare to 8-ohm versions of the same driver?

The 4-ohm impedance draws more current from your amplifier, potentially delivering more power than equivalent 8-ohm drivers. However, your amplifier must handle 4-ohm loads safely. Check your amp’s specificationssome older units aren’t stable into 4-ohm loads and may overheat or shut down.