The zHORN home
EMAIL:tomzur(at)vajraguru.com




  • The zHorn Heruka uses the Fostex FE 168 E Sigma driver, a 6.5 inch driver.
  • This is an extremely open and smooth driver, with substantial bass. Compared to the zHorn Dakini with a 4 inch Fostex 108, this is far superior in the lower midrange into the bass. It is very efficient at 94.5 db/watt/meter.
  • The dimensions are 8.5 x 14 x 36 inches.
  • The cabinets can be gotten in various veneered plywoods. They are then French polished with a dozen or more coats of hand rubbed shellac and oil.
  • The driver is mounted on a one inch thick piece of hardwood. The theory is that the vibration moves quickly through hardwood. The energy moves into the cabinet which is made of Russian Baltic Birch with a shell of Candian Fir plywoods.
  • Internal wiring varies: ideally one would use the same wiring that is connected from the amplifier.
  • Cork lines 30%-40% of the horn path, especially near the mouth (the terminus). This seems to absorb some of the upper range frequencies and spurious high frequencies caused for winds inside the horn path: the result is a quieter background to the sound. Bows to Yamamura for this technique.
  • For more photos of the zHorn Heruka, see here.
  • See this page for construction plans and for a photo of the speaker just before it is clamped. Here.
  • These photos were taken in my front yard. Much of the construction of the zHorn is along side the Yahara River here in Madison , Wisconson.
  • For pictures of a zHorn Heruka clone, with slight variations. Made by Ray Boston. Here.
  • Here are some pictures of a pair of Heruka made by Mark Szabo in Hungry. Here.