Introduction to Lowther

We say "Lowther for Life". We mean that once Lowther Loudspeakers are used, audio and hi-fi perfectionists stay with them for life. The sound reproduction is the most life-like available, and gives the feeling of being in the concert hall.
Pale yellow paper cone, along with huge magnet structures and that black "nose" of a phase plug sticking out from the center of the dual wound balanced voice coil.  For decades these drivers have attracted thousands of audio enthusiasts all over the world.

What makes Lowther driver so unique?

1) Twin Paper Cone
The basic Lowther design features a 20cm twin cone driver made of long fiber paper. This very light hand made paper cone with an exceptionally strong magnet and a very light cone enables the driver to reproduce the full spectrum of audible sound and beyond.

2) Strong Magnet
In order to produce strong magnetic fields for their drivers Lowther uses very advanced techniques in magnet and pole piece construction. Magnet type includes Feroba, Alcomax, 'Hi-Ferric' Rare Earth, and 'Hi-Ferric' Rare Earth Neodymium. For example their strongest magnetic assembly, that of the Lowther PM4A, has an enormous energy density and produces a gap flux of 2.4 Tesla (24000 Gauss). The PM4A is weighted 10Kg each!

3) Full Range
In theory, no crossover provide flat amplitude response and flat phase response at the same time. When you get good amplitude, you must trade off in phase response, result in poor imaging.

Lowther is truly a single, full range driver. The typical frequency range is 30 Hz to 20 KHz. (22.5 KHz max). No more crossovers are needed. Say goodbye to phase errors, the main cause of poor imaging. Lowther drivers are very revealing, very coherent, and very musical. Lowther puts you much closer to real music! Only one Lowther driver is used per cabinet. Imaging is wonderful.

4) Highest Sensitivity
Lowther are extremely efficient. The Lowther EX4 gives you 99.5db @1m/1kHz/1watt (may extend up to 107db depends on cabinet design). A 3 watt 2A3 tube is enough to drive the speakers beautifully. Due to its high sensitivity characteristic nature, you can hear lots more details that are missing from other speakers. There is a recent trend in audiophiles to go with the combination of high sensitivity speakers and low power amplifiers.

5) Horn Loaded Design
Lowther drivers are high pressure low excursion device, hence they are not suited for typical bass reflex boxes.  In order to produce the lowest frequencies, they need to be attached to a horn.  They are much like a compression driver in this respect.  A rear horn allows the driver to transform its small excursions into large volumes of moved air thereby increasing bass efficiency to match high-frequency efficiency.  Horn bass has a purity of tone that is unrivaled.  There's no boom, and no such thing as 'one note' bass.  The bass from a Lowther horn has an articulation unlike any other speaker.  see complete speaker systems The horn path is precisely calculated according to law of physics. The longer the path, the deeper the bass. see the biggest horn in the world

Example of horn loaded design.

Click here to see recommended reading on horn loaded speakers.