The SAXLP-18A powered line array subwoofer delivers the deep bass extension needed for professional line array systems. Whether you're running sound for outdoor festivals, large corporate events, or touring productions, this 18-inch subwoofer provides the low-end foundation that keeps audiences engaged.

This active subwoofer generates 600 watts RMS and 1200 watts peak power, driving an 18-inch woofer with a substantial 4-inch voice coil and 120 oz magnet. The result is clean, powerful bass that extends down to 35Hz, filling the frequency gap that line array tops can't reach.

The Class AB amplifier with cooling fan ensures reliable performance during extended use, while the adjustable low-pass filter (40Hz-300Hz) lets you dial in the perfect crossover point for your specific line array configuration. At 98 dB sensitivity and 130 dB maximum SPL, this subwoofer matches the output capabilities of professional line array systems.

Deploy these subwoofers for outdoor concerts serving 500-1500 people, corporate presentations in large venues, or festival stages where deep bass projection is essential. The omni-directional coverage pattern provides consistent low-frequency response throughout the listening area.

Connect via balanced XLR inputs and outputs, with powerCON-compatible power connections for daisy-chaining multiple units. The all-birch plywood enclosure includes line array frame mounting hardware and a pole mount cup for flexible deployment options.

Seismic Audio backs the SAXLP-18A with a one-year warranty and fast shipping. Professional-grade line array bass performance at a price point that makes sense for working sound companies.

Technical Specifications

Frequently Asked Questions

What size venues work best with the SAXLP-18A subwoofer?

This subwoofer is designed for medium to large venues serving 500-1500 people. The 1200 watts peak power and 130 dB maximum SPL make it suitable for outdoor festivals, large corporate events, concert venues, and touring productions. For smaller indoor venues under 300 people, you may find this subwoofer provides more bass than needed.

What cables do I need to connect the SAXLP-18A to my line array system?

You'll need balanced XLR cables to connect your mixer or processor to the subwoofer's input, and another XLR cable to send the full-range signal to your line array tops. For power, use powerCON-compatible power cables if daisy-chaining multiple subwoofers. Standard IEC power cables work for single-unit installations.

How do I set the crossover frequency between this subwoofer and my line array speakers?

Use the adjustable low-pass filter control on the back panel, which ranges from 40Hz to 300Hz. Start around 80-100Hz for most line array systems, then adjust by ear. The subwoofer's XLR output provides a full-range signal to your tops, so you'll also need to set the high-pass filter on your line array speakers or processor to match.

Can I use this subwoofer with different brands of line array speakers?

Yes, the SAXLP-18A works with any line array system that accepts balanced XLR inputs. The adjustable crossover frequency and full-range XLR output make it compatible with most professional line array configurations. Just ensure your tops can handle the power output and match the crossover settings appropriately.

How many SAXLP-18A subwoofers do I need for my line array system?

This depends on your venue size and line array configuration. For most applications, plan one subwoofer per side for stereo systems, or two subwoofers per side for larger outdoor events. The powerCON outputs allow you to daisy-chain multiple units for increased bass output in very large venues or when maximum low-end impact is required.

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