These served as my main speakers for several years. The Leap passive crossoverĭesign came from Madisound.Check out the design details and more pictures of the speakers and crossover. Used but with a Audax tweeter using a ported box. Offers a kit designed by Vance Dickason that uses the same Audax woofer I Sub-woofers I didn't need real low f3 (low roll off point). 75" MDF and the front panel is 1.75" MDF.I chose a sealed boxįor ease of construction and since the speakers were made to be used with The boxes are very high quality and for $44 each very reasonable. I ordered the enclosures from Parts Express. I did not build the box because I didn't want a silicone oozing Pictured is the completed box (right) and the crossover Pass filter increases listening enjoyment in less than ideal conditions. Using a FET input op-amp, chip audio amplifier, and a high pass filter. Instead of using exclusively discrete components, I have implemented the design My receiver is based on the design by Stephen P. World or they may be long decreasing frequency tones. The sounds are sometimes short clicks caused by lightning somewhere in the My VLF (very low frequency) receiver is a audio/radio project. However, 20W is a little anemic when used for home theaters at "reference levels". The sound level the amp produced (with reasonably efficient speakers) always surprised younger people who consider 100W/ channel the norm. It never saw too much time in my stereo rack becasue my "stereo" serves both music and home theater duties. The International Rectifier IRFP140N MOSFET was used for the output transistor andĬurrent source. 20 Watts per channel, three stage architecture (differential input, gain stage, The amplifier was designed using PSPICEĪnd Veribest (an electronic simulation and layout program now owned by Mentor Graphics). Parts placement, parts list, and detailed article are now up. The article was published inĪudioXpress magazine (September 2003). My senior project from '99, a single ended class A amplifier (right), has been completely posted. It makes room shaking bass for movies, but is still articulate for music. This subwoofer is one of my projects that still sees active duty. You can find more details and pictures for this project.
With over 16mm of linear one way x-max, the Tempest can push some air and create some good vibrations. The subwoofer is a sealed design using a 15" Tempest subwoofer from Adire Audio. Mount a speaker, throw in some aesthetics and you are done. In short, you take the sonotube cylinder and add a top and bottom. Spheres are best, but very hard to build. A cylinder is the next best shape for a speaker. Sonotube is a thick card board like material that is used to make concrete pillars in bridges and other structures. Speakers, but a Sonosub (built from Sonotube) simplifies the building. My wood working skills keep me away from doing too many It has been awhile since I built any speakers, but I couldn't resist replacing my old subwoofers Text in italics is text that I added when I reposted these pages. I kept a backup of them and am now re-posting them here. They eventually got removedĪbout six years after I graduated. These pages were originally at for many years.