Adjustable Bass Reflex Tube for Home Built Speakers.
An excellent item for fine tuning speaker cabinets & allowing you to achieve a tailored bass response to your personal liking; they are also very handy for experimentation when finalising designs or replacing bass units.
These telescopic ports are so simple to install & use, an essential item for the loudspeaker hobbyist or builder:
Tube bore: 35mm
Outside diameter: 45mm
Adjustment range: 110-210mm
Flange diameter: 65mm
Cross section area: 9.6cm squared
We also stock a large version for in-car and disco applications.