£899,995

Coltrane Supreme Extreme

Coltrane Supreme Extreme was born from that desire. A five-way, dual-tower speaker that removes every barrier between artist and listener.

When the feeling is real.

We don’t just want to hear music. We want to feel it—deeply and without compromise. Coltrane Supreme Extreme was born from that desire. A five-way, dual-tower speaker that removes every barrier between artist and listener. It’s the closest we’ve ever come to pure sound.

Hear what was always there.

This is where the voice gives form to feeling. The diamond tweeter and high midrange bring breathtaking clarity and articulation. The beryllium midrange wasn’t the goal—just the perfect solution. And the new Crystalid mid-bass drivers reveal the subtle textures where true emotion lives.

Challenge Everything.

Building Supreme Extreme meant starting from a blank page and asking harder questions. How can we optimise dynamics? Control resonance? Honour the music? The answer was clear: separate towers, each engineered with absolute precision to reveal the full emotional range of a performance.

Strength together

Solid wood and aluminium are bonded in a rigid sandwich structure. This layered construction reinforces the cabinet, controlling vibration and enhancing stability—so every frequency rings true, without interference.

Nothing in the way

The cabinet should disappear. That’s why we designed a seamless carbon fibre monocoque, layered with aluminium and solid wood. Inert and acoustically invisible—it lets the sound do its thing.

X marks the spot

This is the moment it all aligns. Every element of Coltrane Supreme Extreme—crossover, isolators, structure and flow—is designed to meet here, in perfect harmony. It’s the point where distractions fade and the music lands exactly where it’s meant to be: right in front of you, fully alive.

TECHNICAL SPECIFICATIONS • Main Tower

Frequency range120-60000 Hz +-2dB
Power rating600 W
Sensitivity93 dB / 2.83 V
Impedance6 ohms (3.4 Ohms min)
Type5-way
Drive units1 x 1” pure diamond tweeter 1 x 3” pure diamond high midrange 1 x 7” pure beryllium midrange 4 x 8” Crystalid mid-bass
Crossover frequencyFirst order: 120Hz, 370Hz, 1000Hz, 4000Hz
TerminalsBi-wiring Marten / Furutech
Internal wiringJorma Paragon
CabinetCarbon fibre monocoque with aluminium/solid wood sandwich: Matte Walnut, Matte Cherry, Matte Maple and Matte Oak
StandsMirror polished stainless steel with Marten Isolators
Dimensions WxHxD30 x 182.2 x 63.5 cm (11.8 × 71.8 × 25”)
Net weight140 kg (309 lbs)

Technical Specifications • Bass Tower

Frequency range17 - 120 Hz +-2dB
Power rating1000 W
Sensitivity93 dB / 2.83 V
Drive units5 x 10” aluminium sandwich bass 10 x 10” aluminium sandwich passive radiator
Crossover frequencyFirst order: 120Hz
TerminalsSingle-wiring Marten / Furutech
Single-wiring Marten / FurutechJorma Paragon
CabinetCarbon fibre monocoque with aluminium/solid wood sandwich: Matte Walnut, Matte Cherry, Matte Maple and Matte Oak
StandsMirror polished stainless steel with Marten Isolators
Dimensions WxHxD70 x 182.2 x 63.5 cm (27.6 × 71.8 × 25”)
Net weight270 Kg (595 lbs)