The Richter-15 replacement woofer serves musicians, sound engineers, and cabinet builders who need to repair blown drivers or upgrade existing PA cabinets. This 15-inch raw speaker handles the demanding mid-bass frequencies that make vocals cut through the mix and give instruments their punch.

Built around a 50-ounce magnet and 3-inch voice coil, the Richter-15 delivers 250 watts RMS with peaks up to 500 watts. The die-cast aluminum chassis provides the rigid foundation needed to control cone movement at high output levels, while the paper cone and cloth surround produce natural midrange response without harshness.

With 8-ohm impedance and 98 dB sensitivity, this driver works efficiently with most PA amplifiers and powered mixers. The 50 Hz to 5 kHz frequency response covers the critical vocal and instrument range, making it suitable for full-range monitor applications or as the mid-bass component in larger systems.

Sound engineers use these drivers to repair monitor wedges and side-fill cabinets at venues seating 200-500 people. Bass players appreciate the tight low-end response for upgrading combo amp speakers. Cabinet builders choose the Richter-15 for DIY monitor projects and custom PA builds, particularly in vented enclosures where the driver's parameters shine.

Installation requires standard speaker wire connections - no special cables or adapters needed. The driver ships ready to mount with standard mounting hardware fitting most 15-inch cabinet cutouts.

Seismic Audio backs every Richter-15 with a one-year warranty and ships direct from our warehouse for fast delivery to your venue or workshop.

Technical Specifications

Frequently Asked Questions

What size venues can this driver handle?

The Richter-15 works well in venues seating 200-500 people when used in properly designed cabinets. For smaller clubs and rehearsal spaces, one driver per monitor wedge provides adequate coverage. Larger venues may require multiple drivers or supplemental high-frequency compression drivers for full-range coverage.

Can I use this to replace the driver in my existing PA cabinet?

Yes, the Richter-15 fits standard 15-inch cabinet cutouts with typical mounting hole patterns. Check that your cabinet's internal volume and port tuning suit a driver with these Thiele-Small parameters. The 8-ohm impedance matches most PA cabinet designs, making it a direct replacement for blown OEM drivers.

What amplifier power do I need for this driver?

Match this driver with amplifiers rated between 150-300 watts RMS at 8 ohms for optimal performance. Lower-powered amps won't reach the driver's full potential, while significantly higher power risks damage. Most powered mixers and PA amplifiers in this range work well with the Richter-15's 98 dB sensitivity.

Does this driver need a crossover or can I run it full-range?

The Richter-15 works full-range for monitor applications and smaller PA systems. Its 5 kHz upper limit means you'll want to add a compression driver and crossover for larger systems requiring extended high-frequency response. For bass guitar applications, you can run it without a crossover since most bass fundamentals fall well within its range.

How does this compare to using a coaxial speaker?

Raw drivers like the Richter-15 offer more flexibility than coaxial designs - you can choose your own tweeter, crossover point, and cabinet design. Coaxials provide convenience with built-in high-frequency drivers, but the Richter-15 gives better midrange clarity since there's no tweeter mounted in the center of the cone affecting dispersion patterns.

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