When you're running sound for 500+ people outdoors, your line array tops handle the mids and highs beautifully, but they can't push the low end you need to make people feel the kick drum in their chest. That's where the SAXLP-18A comes in. This is a purpose-built line array subwoofer that does one thing really well: delivers the deep bass foundation your system is missing.

The 600-watt RMS amplifier drives an 18-inch woofer with a hefty 4-inch voice coil and 120 oz magnet, giving you clean bass response down to 35Hz. At 130 dB max SPL, it matches the output of professional line array systems without breaking up or bottoming out. The Class AB amp includes a cooling fan, so it won't thermal out during those three-hour outdoor sets in July.

What makes this work with any line array system is the adjustable low-pass filter (40Hz-300Hz) and full-range XLR output. You dial in your crossover point on the sub, then send the full-range signal to your tops. The powerCON in/out connectors let you daisy-chain multiple units when you need more low end for larger venues or when the client specifically asks for "more bass."

This isn't a small-venue subwoofer. At 127 pounds and nearly 30 inches square, it's built for outdoor festivals, corporate events in convention centers, and touring productions. The all-birch cabinet includes line array frame mounting hardware and a pole mount cup, so you can integrate it into rigged systems or ground-stack it depending on your setup.

Bottom line: If you're running line arrays for medium to large venues and need professional-grade bass extension that won't quit, this delivers the low-end foundation your system needs at a price point that makes sense for working sound companies.

Technical Specifications

• Power (RMS): 600 Watts
• Power (Peak): 1200 Watts
• Amplifier Type: Class AB with Cooling Fan
• Woofer: 18" with 4" Voice Coil
• Magnet Size: 120 oz
• Frequency Response: 35Hz - 300Hz
• Max SPL: 130 dB
• Sensitivity: 98 dB
• Impedance: 8 Ohms
• Coverage Pattern: Omni-Directional
• Low-Pass Filter: 40Hz - 300Hz (Adjustable)
• Inputs: Balanced Female XLR
• Outputs: Balanced Male XLR Full-Range
• Power Connectors: powerCON Compatible In/Out
• Controls: Master Volume, Power Switch, LPF Control
• Indicators: Power, Peak Signal
• Cabinet: All Birch Plywood, Black Textured
• Grill: Powder Coated Steel
• Mounting: Line Array Frame, Pole Mount Cup
• Suspension: High Intensity Aluminum
• Power Input: Universal 100-240 VAC
• Dimensions: 29.5" x 24.5" x 24.5"
• Weight: 126.7 lbs
• Warranty: One Year
• Recommended For: Large venues, outdoor events, line array systems

Frequently Asked Questions

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

This sub is designed for audiences of 500-1500 people in medium to large venues. Think outdoor festivals, convention centers, concert halls, and touring productions. If you're doing coffee shop gigs or small clubs under 300 people, this will likely overpower the room and your line array tops.

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

Start with the low-pass filter around 80-100Hz and adjust by ear. The sub's XLR output sends full-range signal to your tops, so you'll need to set the high-pass filter on your line array speakers or processor to match. Most line array systems work well with an 80-100Hz crossover point.

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

Yes, it works with any line array system that accepts balanced XLR inputs. The adjustable crossover and full-range output make it compatible with most professional line arrays. Just make sure your tops can handle the power output and match your crossover settings properly.

How many of these do I need for my system?

For most applications, start with one per side for stereo systems. Large outdoor events or venues where you need serious low-end impact may require two per side. The powerCON outputs let you daisy-chain multiple units when you need to scale up the bass response.