The SA-155.2 delivers the power and clarity that bands, DJs, and churches need from a dual 15" PA speaker. This passive speaker cabinet handles 500 watts RMS and peaks at 1000 watts, making it a reliable choice for live sound reinforcement where you need serious low-end presence.

Two 15" woofers with 50oz magnets and 2" voice coils provide the foundation, while dual 2x5 tweeters handle the highs. The 4-ohm impedance and 96dB sensitivity mean this cabinet works efficiently with most power amplifiers, and the 45Hz to 20kHz frequency response covers the full audio spectrum your audience expects to hear.

Built with a 5/8" plywood front panel and steel grills, the SA-155.2 handles the rigors of regular transport and setup. Dual ports enhance the bass response, while pocket handles make load-in manageable for the 51-pound cabinet. At 38" tall, 16" wide, and 12" deep, it fits in most venues while delivering sound coverage for audiences up to 200 people indoors.

The terminal cup features two 1/4" inputs for easy daisy chaining to additional speakers. Standard speaker cables connect your power amp to the cabinet, and the parallel inputs let you link multiple SA-155.2s without additional hardware.

Seismic Audio backs each SA-155.2 with a one-year warranty and ships direct to keep professional-grade PA speakers accessible to working musicians and sound engineers.

Technical Specifications

Frequently Asked Questions

What size venues can the SA-155.2 handle?

The SA-155.2 works well for indoor venues with audiences up to 200 people, such as small to medium churches, wedding receptions, club gigs, and school auditoriums. For outdoor events, expect coverage for about 100-150 people due to the lack of wall reflections. You'll need adequate amplifier power to reach these capacity levels effectively.

What amplifier power do I need for the SA-155.2?

You'll want an amplifier that delivers 400-500 watts RMS into 4 ohms per cabinet to properly drive the SA-155.2. This matches the speaker's 500-watt RMS power handling and ensures you can achieve full output without clipping. Popular choices include Crown XTi or QSC GX series amplifiers in the 800-1000 watt range for powering a pair.

Can I daisy chain multiple SA-155.2 speakers?

Yes, the SA-155.2 features two 1/4" inputs that allow easy daisy chaining to additional speakers. Connect your amplifier to the first cabinet, then run a speaker cable from the second input to the next SA-155.2. Keep in mind that adding speakers in parallel reduces the total impedance load on your amplifier.

Do I need a subwoofer with the SA-155.2?

The dual 15" woofers provide substantial bass response down to 45Hz, so a subwoofer isn't required for most applications like live bands or DJ sets. However, if you're doing bass-heavy electronic music or want to feel the deepest sub-bass frequencies, adding a dedicated subwoofer will enhance the low-end impact and allow the SA-155.2 to focus on mid and high frequencies.

What cables do I need to connect the SA-155.2?

You'll need standard speaker cables with 1/4" phone plugs to connect from your power amplifier to the SA-155.2. For daisy chaining multiple cabinets, use additional speaker cables of the same type. Avoid using instrument cables or XLR cables, as these aren't designed for speaker-level signals and can cause damage to your equipment.

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