Coltrane Supreme Extreme

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.

• 5-way, dual-tower

• 1” pure diamond tweeter

• 3” pure diamond high midrange

• 7” pure beryllium midrange

• 8” Crystalid mid-bass

• 10” Aluminium sandwich bass

• 10” Aluminium sandwich passive radiator

• First order crossover

• Custom-built crossover components

• Carbon fibre monocoque cabinet

• Solid wood and aluminium sandwich construction

• Custom speaker terminals

• Jorma Paragon internal wiring

• Marten Isolators

Coltrane Supreme Extreme represents the pinnacle of Marten's craftsmanship and engineering. Every aspect of this speaker is designed to provide the purest listening experience possible. Its five-way design, featuring custom diamond tweeter and midrange drivers, the largest beryllium driver ever created, and Crystalid mid-bass drivers, offers a clarity and definition previously unattainable.

A suite of aluminium sandwich bass drivers ensures deep, controlled low frequencies with extraordinary clarity. The unique first-order crossover delivers perfect time and phase coherence across the entire frequency range.

The carbon fibre monocoque, dual-tower cabinet is another innovation, providing an acoustically inert structure that allows sound to flow naturally. Combining solid wood and aluminium sandwich construction, the cabinet minimises vibrations and resonance, ensuring that sound is pure and undistorted.

To ensure the highest level of fidelity, this model is equipped with Jorma Paragon internal wiring, delivering exceptional signal purity. Every element, from the choice of materials to the design process, is carefully considered, making Coltrane Supreme Extreme a speaker that brings you closer to the artist’s intent with extraordinary precision.

Coltrane Supreme Extreme features Jorma Paragon internal wiring—the most advanced Marten has ever used. Hand-built in Sweden, it delivers the signal with exceptional purity, control and detail.