How is a Sonotube used as a speaker enclosure ?
In constructing a Sonotube enclosure, the first decision you have to make, is the location of the drivers in the tube. Will the driver(s) be mounted in the ends firing up or down? Or will they be mounted in the side of the tube firing out (perpendicular to axis of tube) ? Mounting in End of Tube. This method is the most common for subwoofer cabinets. Building a driver into the side is much more difficult, and the frequencies below 80 Hz are omnidirectional, (mounting a subwoofer driver facing down or up, does not have much effect on the sound) so most people building with Sonotube just mount them in the end caps. To mount a driver in the ends of Sonotube, it is first necessary to fabricate the end plugs. The plugs each generally consist of two circular layers of MDF. One of the circles is cut to the inside diameter of the tube so that it will just barely fit and the top layer is cut to the outside diameter of the tube so that it sits on top and is flush all the way around the tube. The
