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OUR BRAND

With over 90 years of experience, Lowther has been dedicated to the art of sound, developing a range of speaker cabinets and cultivating a passionate community of DIY enthusiasts. Our commitment to handmade excellence means that every speaker is crafted in Great Britain, using techniques honed over decades.

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The Philharmonic Collection
DRIVE UNITS

The Philharmonic Collection

Our most refined offering of instruments, standard in every Lowther masterpiece.

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Our most refined offering of instruments.

The Philharmonic Collection represents our most refined offering of instruments. This selection features only three exceptional designs - PM4A, PM7A, and our Field Coil - each chosen for their perfect embodiment of the Lowther sound that has captivated listeners for generations.

Distinctive, superior engineered metalwork with nickel chrome finishing elevates these instruments to objects of both acoustic and visual beauty. Our Philharmonic drive units combine aesthetic elegance with functional excellence.

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Philharmonic Collection - All three drive units
Field Coil Philharmonic drive unit
PM4A Philharmonic drive unit
PM4A Philharmonic drive unit detail
PM7A Philharmonic drive unit
Close-up of Philharmonic drive unit cones

Explore the Collection

Discover the heart of Lowther sound – our meticulously crafted drive units.

Field Coil Motor

Field Coil Motor

From £6,700*

PM4A

PM4A

From £1,780*

PM7A

PM7A

From £1,530*

*All prices exclude VAT. As a global company, applicable taxes are automatically calculated based on your location on our online store.

Handcrafted in Great Britain

Every Lowther drive unit is the result of meticulous hand assembly, decades of refinement, and an unwavering commitment to sonic excellence.

Hand-Wound Voice Coils

Hand-Wound Voice Coils

At the heart of every Lowther lies a voice coil wound entirely by hand, to tolerances measured in microns. Copper, silver, or gold alloy wire is layered under exact tension to achieve balance beyond the reach of machines.

Assembled by Master Craftsmen

Assembled by Master Craftsmen

Every component is brought together by craftsmen whose experience spans decades. Their skill and intuition, the ability to feel perfect alignment within a human hair's breadth, ensure flawless centring and effortless movement.

Cones Treated by Hand, Dried by Sunlight

Cones Treated by Hand, Dried by Sunlight

Our paper cones are individually brushed with proprietary treatments, then cured slowly in natural sunlight. This organic process creates a surface both rigid and alive, capturing musical textures with breathtaking speed and delicacy.

Tested to Ensure Perfection

Tested to Ensure Perfection

Every drive unit undergoes exhaustive acoustic and mechanical testing. From precise frequency analysis to the tactile inspection of cone travel, nothing leaves our bench until it meets the sonic ideal that defines Lowther.

Superior Metalwork, Engineered for Magnetism

Superior Metalwork, Engineered for Magnetism

Our metalwork is forged from premium lead-free steels. This geometry channels magnetic flux with maximum efficiency, forming the silent architecture beneath the Lowther signature: lightning-fast response and effortless dynamics.

Choice of Magnets

Choice of Magnets

From traditional Alnico to modern Neodymium and the rare Permendur and Magmax of our Grand Opera instruments, each magnet composition shapes character and tone.

The Details That Define the Collection

Improved Metal Work

Improved Metal Work

Distinctive, superior engineered metalwork with nickel chrome finishing elevates these instruments to objects of both acoustic and visual beauty. High Grade EN1A Lead Free Steel, precision machined to exacting tolerances.

Hand-Machined Matched Frames

Hand-Machined Matched Frames

Each frame is precision-machined in our Norfolk workshop, with tolerances measured in microns. The perfect marriage of traditional craftsmanship and modern engineering ensures optimal magnetic flux control and structural integrity.

Sinfonia Cone Improvements

Sinfonia Cone Improvements

Our latest Sinfonia cone treatment delivers enhanced bass response while maintaining the legendary Lowther midrange clarity. Each cone is hand-treated and sun-cured, creating a diaphragm that combines rigidity with musical expression.

What Owners Say

Real experiences from Philharmonic owners around the world

I finally understand what people mean by the 'Lowther sound'. The Philharmonics make music feel alive again.

I built the cabinets myself and when I dropped the Philharmonics in, wow!

Every friend who visits wants to know what they're hearing. They can't believe it's just one driver doing everything.

They're not just speakers, they're a piece of art. I still catch myself standing back just to look at them.

I've used countless systems over the years but these have ended my search.

Installing them myself made the first listen even more emotional.

I've owned systems five times the price, but none have ever made me feel closer to the music.

Lowther for Life

Discover the stories, craftsmanship, and passion behind Lowther through our video series.

Episode 1

Episode 1

Episode 2

Episode 2

Episode 3

Episode 3