The SA-155T delivers serious low-end punch for bands, DJs, and venues that need dual 15" power handling without breaking the budget. This passive PA speaker puts two 15" woofers and a titanium compression driver in a roadworthy cabinet built for consistent live sound performance.

Each cabinet handles 700 watts RMS continuous power and peaks at 1400 watts, giving you the headroom needed for dynamic music and vocal reproduction. The dual 15" configuration with 50-ounce magnets and 2" Kapton voice coils moves serious air, while the 1.5" titanium compression driver handles highs with a 12/18dB crossover at 3000Hz.

At 96dB sensitivity and 4-ohm impedance, the SA-155T works efficiently with most power amplifiers and delivers full-range sound from 45Hz to 20kHz. The 14" x 7" horn pattern provides wide coverage for medium to large venues, handling crowds up to 400 people indoors or 250 people outdoors.

Connect via dual 1/4" or dual Speakon inputs, and daisy-chain multiple cabinets as needed. The 5/8" plywood construction, metal corners, and steel grille handle the rigors of mobile sound reinforcement, while recessed handles and rubber feet make transport and setup straightforward.

Each SA-155T weighs 73 pounds and measures 45" x 18" x 16". Backed by Seismic Audio's one-year warranty with fast shipping direct from our warehouse.

Technical Specifications

Frequently Asked Questions

What size venue can the SA-155T handle?

Each SA-155T cabinet covers venues up to 400 people indoors or 250 people for outdoor events. The dual 15" configuration and 96dB sensitivity provide enough output for medium to large rooms, churches, wedding receptions, and club gigs. For larger venues or deeper bass response, consider pairing with subwoofers or using multiple cabinets.

What amplifier power do I need for the SA-155T?

The SA-155T handles 700 watts RMS at 4 ohms, so match it with an amplifier rated for 700-1000 watts at 4 ohms for optimal performance. Most professional power amplifiers in the 1000-1500 watt range work well. The speaker's 96dB sensitivity means it produces good volume even with moderate power levels.

What cables do I need to connect the SA-155T?

You can connect using either 1/4" speaker cables or Speakon cables - the cabinet has dual inputs for both types. Use 12-gauge or thicker speaker cable for runs up to 50 feet, and 10-gauge for longer distances. The dual inputs also allow you to daisy-chain multiple SA-155T cabinets from a single amplifier channel.

Do I need a subwoofer with the SA-155T speakers?

The dual 15" woofers in each SA-155T provide solid bass response down to 45Hz, covering most music and vocal applications without additional subwoofers. However, for electronic music, hip-hop, or applications requiring deep sub-bass below 40Hz, adding a subwoofer like the SA-18 or SA-121 will enhance the low-end impact and allow the SA-155T to focus on midrange clarity.

How does the SA-155T compare to single 15" PA speakers?

The SA-155T's dual 15" design provides significantly more bass output and power handling than single 15" speakers, making it better suited for larger venues and bass-heavy music. While single 15" speakers are more portable and cost-effective for smaller gigs, the SA-155T delivers the low-end punch needed for full band performances and DJ applications where bass impact is critical.

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