These 2-inch diameter speaker cabinet port tubes are essential components for DIY PA cabinet builders and sound engineers replacing worn ports in existing enclosures. Whether you're constructing custom subwoofer cabinets or refurbishing vintage PA boxes, proper port tuning is critical for bass response and cabinet performance.

Each port tube features a precision-molded plastic construction with a 2-inch inner diameter and 2-inch length, designed to optimize airflow and minimize port noise in bass reflex cabinet designs. The integrated flange provides a clean, professional installation with an outer diameter of 2⅝ inches that covers rough cutout edges.

Installation requires a 1⅞-inch cabinet cutout, making these ports compatible with standard hole saws and cabinet-building tools. The black finish integrates seamlessly with professional PA enclosures, while the durable plastic construction resists wear and environmental factors better than cardboard ports.

These port tubes work in subwoofer cabinets, full-range PA speakers, and floor monitor enclosures where proper bass reflex tuning is required. They're particularly valuable for custom 12-inch and 15-inch subwoofer builds, guitar cabinet modifications, and repair shops servicing damaged speaker boxes.

Each order includes two port tubes, providing enough components for a stereo pair of cabinets or backup inventory for ongoing projects. Seismic Audio backs these components with a one-year warranty and ships them ready for immediate installation in your next cabinet build.

Technical Specifications

Frequently Asked Questions

What size hole do I need to cut for these port tubes?

You'll need to cut a 1⅞-inch diameter hole in your speaker cabinet. This is a standard size that works with most 1⅞-inch hole saws or step drill bits. The port's integrated flange will cover the cutout and provide a finished appearance.

Are these ports suitable for subwoofer cabinets?

Yes, these 2-inch ports work well in subwoofer cabinet designs, particularly for 12-inch and 15-inch driver enclosures. The port dimensions help tune the cabinet's bass response, but you'll need to calculate the proper cabinet volume and port placement based on your specific driver and desired tuning frequency.

How many port tubes do I get with this order?

This is a 2-pack, so you'll receive two port tubes. This provides enough ports for a stereo pair of cabinets or gives you a spare for future projects. Each port tube includes the integrated flange for professional installation.

Can these replace damaged ports in existing PA speakers?

Absolutely. These ports are designed as direct replacements for worn or damaged ports in existing speaker cabinets. As long as your current port has a similar 2-inch diameter and your cabinet cutout is 1⅞ inches, these will provide a proper replacement that restores your cabinet's bass response.

Do these ports work with both ported and sealed cabinet designs?

These ports are specifically for bass reflex (ported) cabinet designs. They won't function in sealed cabinets, as sealed enclosures rely on the air trapped inside for bass response. If you're converting a sealed cabinet to ported, you'll need to recalculate the internal volume and tuning frequency for optimal performance.

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