http://www.subwoofer-builder.com/ Some of the more interesting content recently added at subwoofer-builder.com en-us entry09 http://www.subwoofer-builder.com/ib-tempest.htm Australian builders of IB subwoofers have been frustrated by the recent lack of affordable drivers. The new Tempest-X driver being sold by Audiomarketplace appears to have saved the day. Whilst dearer than the the Jaycar driver previously used, it has an Xmax of 27mm and uses Adire Audio's renowned XBL^2 motor technology. Follow the link for two, four and six-driver designs. entry07 http://www.subwoofer-builder.com/drivers.htm The decision by Jaycar, an Australian audio components reseller, to discontinue their Venom range of subwoofer drivers has outraged the Infinite Baffle community. The 15 inch driver was the only affordable driver suitable for these simple, but high performance designs. Much gnashing of teeth can be heard as the hunt for a replacement goes on! entry06 http://www.subwoofer-builder.com/sketchup/rollover.htm Illustrated tutorial for drawing extruded surfaces that follow a circular path. It's a handy technique for drawing routed rollover edges and port flares. This walk-through is much more detailed than the default help that comes with sketchup. entry05 http://www.subwoofer-builder.com/flares-rectangular.htm Drawings and guidlines for using split PVC pipe to create flares and smooth bends for slot ports. Includes tables to estimate usable velocity when compared to conventional round ports entry04 http://www.subwoofer-builder.com/flares-25mm.htm Details of heat molded flared ports have been updated to include the ten inch diameter flared ports for SPL competitions.These are currently being evaluated in the UK by a current SPL record holder in his class. entry03 http://www.subwoofer-builder.com/ib.htm An infinite baffle sub has been completed. Twelve 15 inch drivers on two manifolds, driven with around 1700watts. See all the construction details and integration using the REW software. How does it sound? Scary. entry02 http://www.subwoofer-builder.com/amps-all.htm Added links to instructions for modifying boost circuits on several of the Jaycar plate amps. Also added Behringer amps suitable for subwoofer use, along with links to suppliers with good prices entry01 http://www.subwoofer-builder.com/flare-testing-pt3.htm The testing of flared ports continues. The latest round of tests looked at whether the inside flare could be smaller than the outside flare without effecting performance. The short answer is yes, by around 15%-20%