Bass reflex tube – HP35

The Intertechnik HP35 bass reflex tube is a precision-moulded port designed to enhance the low-frequency performance of your loudspeaker enclosures. By integrating this component, you can achieve deeper, more controlled bass extension, allowing your speaker build to deliver a fuller and more dynamic soundstage. This tube is particularly well-suited for DIY audio enthusiasts and professional cabinet makers seeking to optimise the acoustic tuning of their designs.

Ideal for use in bookshelf speakers, subwoofers, or custom audio projects, the HP35 provides a reliable solution for vented enclosure configurations. Its 35mm diameter makes it compatible with a wide range of cabinet sizes, ensuring seamless integration into both new builds and retrofitting existing enclosures. Whether you are crafting a high-fidelity stereo pair or a dedicated home theatre system, this port helps to reduce port noise and improve transient response.

Constructed from durable, high-quality materials, the HP35 features a smooth internal surface that minimises air turbulence and distortion. Its precise dimensions allow for accurate tuning of the enclosure’s resonant frequency, while the flared ends reduce chuffing at higher output levels. The tube is easy to install, requiring only a simple cut-out in the cabinet panel.

In summary, the Intertechnik HP35 is an essential component for achieving refined low-end performance in your speaker projects. Its thoughtful design and robust construction make it a cost-effective upgrade for any serious audio build.