The SA-Port speaker cabinet port tube is designed for audio engineers, cabinet builders, and technicians who need to construct custom PA speakers or repair existing cabinets. This 3-inch diameter port tube enhances low-frequency performance in ported speaker cabinet designs.

The port tube optimizes bass response by creating a tuned acoustic pathway that extends the cabinet's low-end output. When properly installed, it allows the rear wave from the woofer to reinforce the front wave at specific frequencies, delivering deeper bass and improved efficiency compared to sealed designs.

Key specifications include a 3-inch mounting diameter, 4.25-inch length, and durable plastic construction. The cabinet requires a 3.125-inch cutout for installation, while the outer flange measures 3.75 inches in diameter for a secure, professional fit. At just 0.13 pounds, the lightweight design won't add significant weight to your cabinet build.

This port tube works well in 10-inch, 12-inch, and 15-inch PA speaker cabinets for live sound applications. It's commonly used in DJ speakers, stage monitors, and club sound systems where extended bass response is needed. The same port tube is factory-installed in Seismic Audio's T-series speaker cabinets.

Installation requires basic woodworking tools to cut the cabinet opening. The port mounts flush with the cabinet baffle for a clean, professional appearance.

Seismic Audio backs the SA-Port with a one-year warranty and ships quickly to keep your cabinet project on schedule.

Technical Specifications

Frequently Asked Questions

What cabinet cutout size do I need for the SA-Port?

You'll need to cut a 3.125-inch diameter hole in your speaker cabinet baffle. The port's 3-inch mounting diameter fits through this opening, while the 3.75-inch outer flange provides a secure mount against the cabinet face. Use a hole saw or router with a circle jig for clean, precise cuts.

How does a ported cabinet with this tube compare to a sealed design?

Ported cabinets using the SA-Port typically produce 3-6 dB more bass output in the tuned frequency range compared to sealed designs. This translates to deeper, more powerful low-end response that's particularly noticeable in live sound applications. However, ported designs require larger cabinet volumes and precise tuning calculations.

What size speakers work best with this 3-inch port tube?

This port tube works well with 10-inch, 12-inch, and 15-inch woofers in properly designed cabinets. The port length and diameter create optimal tuning for mid-sized PA speakers used in venues seating 100-500 people. Smaller drivers may require shorter ports, while larger subwoofers typically need bigger diameter ports.

Can I use multiple SA-Ports in one cabinet?

Yes, you can install multiple ports to increase the effective port area and reduce air velocity. Two SA-Ports provide similar performance to one larger port while maintaining the same tuning frequency. This approach is useful in high-output applications where port noise might be a concern.

Is this the same port used in Seismic Audio T-series speakers?

Yes, the SA-Port is the exact same port tube factory-installed in Seismic Audio's T-series speaker cabinets. This makes it perfect for repairs, modifications, or building matching cabinets that maintain consistent acoustic performance with your existing T-series speakers.

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