The Khaen Tapered Quarter Wave Pipe
High-efficiency Stereo Audiophile Loudspeaker System

The Khaen is a visually stunning loudspeaker for the for the single ended valve amplifier enthusiast. It reproduces any kind of music with consummate ease, with a special flair for vocals and chamber music. Sensitivity is in excess of 100dB/Watt through most of the audio band, allowing it to be powered with flea amplifiers. The new floorPHI^® port has simplified the design considerably, producing lower, cleaner low frequencies with minimal high frequency "port bleed", providing levels of clarity and energy we have not been able to attain with the previous systems. This loudspeaker is fresh off the workshop floor and much better than we expected.

TECHNICAL DETAILS
This is an almost standard Voigt pipe, with dual forward and aft firing ports. Conical horn mass loading is provided by the gap between the pipe base and the floor/plinth. This distance is standardised in delivered models, but can be tuned for a specific listening space. Built around high sensitivity dual-cone paper drivers with unique sets of physical attributes, this loudspeaker allows us to recreate more and cleaner low frequency content than would be possible with commonly used pipe drivers in pipes of this length. We are proud to add another unique member to our growing line-up of exceptional PHI loudspeakers. Simulations indicate a low frequency -3dB point at between 35Hz and 40Hz and a -10dB point of around 27Hz for a high excursion 8 inch and 6 inch drivers operated full range. We are expecting 50W RMS power handling and some of the lowest and fastest clean bass we have been able to reproduce up to now. Coupled with lively, involving and detailed 'in the room with the performers' delivery, this loudspeaker excels on every level. The speaker depicted in the concept drawing on the left, is manufactured with a solid Purple Heart face and back and 30mm solid bamboo sides.  Sensitivity should be the highest we have been able to obtain due to the drivers, a very minimal crossover (only two components) and a high sensitivity super tweeter. As is usual with PHI products, the look of these units equals their performance.