This complete PA system combines dual 15" main speakers with dedicated 18" subwoofers, designed for bands, DJs, and venues that need full-range sound coverage. Whether you're running live sound for a wedding reception or powering a club night, this four-cabinet setup delivers the low-end punch and vocal clarity that keeps crowds engaged.

The dual 15" mains handle vocals and mid-range instruments with authority, while the 18" subs provide the foundation your music needs. Each main speaker features dual 15" woofers plus a 1.5" titanium tweeter, delivering 700 watts RMS and 1400 watts peak power with frequency response from 45Hz to 20kHz. The subwoofer cabinets contribute 500 watts RMS and 1000 watts peak power each, focusing on the low frequencies that make bass lines and kick drums feel present in the room.

This system handles venues up to 400 people, making it suitable for medium-sized clubs, outdoor festivals, church worship services, and corporate events. The mains work well on stands or as floor monitors, while the subs can be positioned on the ground for maximum low-frequency coupling.

You'll need standard speaker cables to connect your amplifier to each cabinet, plus a crossover or mixer with dedicated sub outputs to properly split frequencies between the mains and subs. The passive design gives you flexibility to match these speakers with any amplifier that meets their power requirements.

Seismic Audio backs this system with reliable construction built for regular transport and setup, plus shipping that gets your gear ready for your next gig.

Technical Specifications

Frequently Asked Questions

What size venue can this PA system handle?

This four-piece system works well for venues holding 250-400 people, depending on the room acoustics and music style. The dual 15" mains provide strong vocal projection while the 18" subs add the low-end presence needed for dance music or full band performances. For outdoor events, expect coverage for slightly smaller crowds due to the lack of wall reflections.

What amplifiers and cables do I need with this system?

You'll need amplifiers that can deliver at least 700 watts RMS per main speaker and 500 watts RMS per subwoofer, plus standard speaker cables to connect everything. A crossover or mixer with high-pass/low-pass filtering helps direct the right frequencies to each cabinet type. Most users run the mains full-range and use a crossover to send only low frequencies to the subs.

Can I use just the main speakers without the subwoofers?

Yes, the dual 15" mains work as a standalone PA system for acoustic music, speaking events, or smaller venues where deep bass isn't critical. The frequency response extends down to 45Hz, so you'll still get decent low-end coverage. Adding the 18" subs becomes important for electronic music, hip-hop, or any situation where you need serious bass impact.

How do these compare to active powered speakers?

These passive speakers give you more flexibility in amplifier choice and often cost less than equivalent powered models. You can upgrade your amplifiers independently or replace a single component if something fails. However, you'll need to purchase amplifiers separately and deal with more cables and rack space compared to self-powered speakers.

What's the difference between having dual 15" drivers versus single 15" speakers?

Dual 15" configuration increases the speaker's efficiency and power handling compared to single-driver designs. You get more surface area moving air, which means higher volume levels and better dynamic range. This setup also provides some redundancy – if one driver has issues, you still have sound from the second driver while you arrange repairs.

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