This seems a logical response. Occupying a niche market comprising the most discerning audio enthusiasts and having committed itself to detail, regarding both the choice of components and materials as well as the design and manufacturing processes, very little had distinguished PHI from being a fully customised loudspeaker manufacturing establishment. The main existing lines of loudspeaker models such as the downPHI^® , the phISH and the Siderium would be continued, with minor modifications, and current production would be conceived around these broad concepts.

So what are these? Broadly, these are three kinds of loudspeakers: the Voigt pipe (TQWT), the intensated short horn (ISH) and the double taper tuned pipe (DTTP); all three employ single driver reproduction (in some cases enhanced by support drivers at the frequency extremes) and bi-pole or our new π-pole architecture.

The ISH is a Voigt pipe, but with substantial mass-loading, making the loudspeakers smaller in order to enable them to fit in the average modern home.

The DTTP consists two back to back Voigt pipes, joined at their bases, enabling very low frequency reproduction.

SO HOW DOES ONE GO ABOUT ORDERING?
 

The order process is simple:

• Contact PHI by sending us an email
• Specify your needs in terms of size/cost/application and/or which of our models seem appropriate
• Specify drivers you might be interested in (or already possess) and your materials of choice
• PHI shall respond with suggestions and a quotation
• When the quotation is accepted, a 50% deposit is made to cover immediate costs
• PHI shall indicate the time required for development and manufacture
• Production commences, with frequent updates sent to the client
• Delivery

PHI has, for the almost five years it has been in operation, continued to impress just about every person who has had the opportunity to audition our products, many claiming that these are the loudspeakers they have had to compare any loudspeakers they've since encountered with. We are confident of continuing, if not improving upon, this tradition.

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The Siderium is a visually stunning loudspeaker for the purist. Constructed from solid American walnut, it excels in any kind of music and has bass extension and clarity far beyond what would be possible with traditional designs. The unique DTTP (Double Taper Tuned Pipe) design is a world first and provides a level of realism, involvement and immediacy that compares with that of any loudspeaker, at any price point.

The Yggdrasil is a visually stunning fullrange single-driver loudspeaker for the purist. Constructed from a mix of Baltic birch ply and Sapele mahogany and employing custom built high-sensitivity drivers suitable for use with low power valve amplifiers, it excels in jazz, classical and vocal music. The design was optimised to provide exceptional levels of realism, emotional involvement and energy, design goals impossible to meet with traditional box speaker types.

Thicker cables are not necessarily better. Effects involving the surface of cables and dielectrics have been shown to deteriorate signal. The soundFILAMENT cleverly sidesteps these phenomena by using a twisted pair construction, ultra thin dielectric and silver plated copper conductors, providing one with a sense of clarity and detail difficult to find at five times this price.

Named after a bamboo flute from Laos, the khene or khaen, pronounced [k^hε:n], the Khaen is a high-sensitivity TQWT with an unique port system capable of 50 Watt RMS power handling and in excess of 101dB / 2.83V efficiency. This magnificent loudspeaker has now been released.

The Ocarina is our smallest loudspeaker. A cross between a reflex enclosure and a tapered quarter-wave pipe, it's equipped with a single high-quality fullrange driver. This is the identical driver we use in our more illustrious Siderium loudspeaker. Silky smooth accurate delivery is what can be expected, with surprising bass extension. As its larger siblings, it's made from purple heart timber and ply. Suitable for desktops and bookshelves.

We'll keep this page updated with news.