Coltrane Supreme Extreme – kaiutin, jossa kiteytyy Leif Olofssonin kaikki osaaminen ja uudet, parhaat mahdolliset materiaalit ja komponentit.
Kahteen torniin rakennettu kokonaisuus. Bassotornissa viisi Accuton 10″ elementtiä ja kymmenen Accuton 10″ passiivielementtiä. Päätornissa neljä 8″Crystalid-midbassoa seuranaan 7″ beryllium keskiääninen, 3″ pure diamond yläkeskiäänielementti ja 1″ pure diamond diskantti.
Jaksosuotimessa ensimmäisen asteen toteutus parhailla mahdollisilla komponenteilla.
Kotelo hiilikuitu ja massiivipuuta teräs
Kysy kuuntelumahdollisuutta Göteborgissa, Ruotsissa
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
Crossover
First order: 120Hz, 370Hz, 1000Hz, 4000Hz
The first-order crossover in Coltrane Supreme Extreme was developed from the ground up to match its dual-tower architecture.
Preserving perfect time and phase, it ensures every frequency arrives in absolute coherence—just as it was recorded. This design uses only the finest components: copper foil air-core coils, silver/oil and silver/gold capacitors, and custom resistors.
The result is a seamless, natural sound with deep control and authority across the full range, especially in the low end.
Internal Wiring
Jorma Paragon is the flagship cable from Jorma—our most advanced internal wiring to date.
Handmade in Sweden, it features ultra-pure copper, separate conductors for signal integrity, and premium shielding to reduce noise.
Paired with our custom crossover, it forms a clean, direct signal path that preserves the full detail and dynamics of the recording. Chosen for its unmatched performance, it ensures Supreme Extreme delivers music with absolute clarity.
Marten Isolators
Developed in close collaboration with IsoAcoustics, these isolators are custom-designed to meet the exact weight, dimensions, and performance demands of Supreme Extreme.
They decouple the cabinet from the floor, dramatically reducing resonance, distortion, and internal reflections.
The result is greater clarity, deeper bass, and a more open soundstage. With improved lateral stability and vibration control, the speaker disappears—and the music takes centre stage.
Bespoke Terminals
Custom-made for Coltrane Supreme Extreme, these terminals are designed to match the speaker’s exact performance requirements.
Made from the highest quality materials, they offer low resistance, excellent conductivity, and long-term mechanical stability. Precision-engineered for a secure and consistent connection, they reflect the same attention to detail found throughout the entire design.
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. 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.
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.
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.
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.
These are the numbers behind the experience—the foundation that makes Coltrane Supreme Extreme what it is.
Coltrane Supreme Extreme is the speaker we’ve spent years dreaming of—designed with no limits, built with no shortcuts. It sets a new benchmark for what’s possible. For those who seek the same philosophy in a more compact form, Coltrane Quintet Extreme carries this vision forward—sharing the same heart, soul and sonic purity in a single tower design.