How Do You Build A Home Cinema Subwoofer?

Unless you have a subwoofer, you don't have enough bass. We will work on the basis that you have woofers already and want to build a subwoofer. If you have a normal bass knob and turning it up already makes a decent boom, you are in the running. • Get some free software to figure out the box size. • Type a speaker's details into the software. These funny numbers are T & S parameters named after some Aussie engineers. Sensitivity of a speaker is a measure of efficiency. Try and find one that is rated at more than 90 dB/watt at one metre and can take about 100 watts rms of power. Parts express, Jaycar, and ebay are all good for various sub parts. Car subwoofer speakers WILL WORK FINE, as long as the overall ohm impedance is not lower than the receiver's. • See if the software recommends a vented design or not. Try a few speakers until you find one that is suitable. Good ones are vented for efficiency and offer low low bass. This project has no vent [[1]] but is still a solid performer. ...  more