Coltrane Quintet Extreme is the second new model we’re introducing in 2025, alongside Coltrane Supreme Extreme. It brings much of the same thinking and technology into a single-cabinet design — built to perform in real rooms, without compromise.
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Coltrane Quintet Extreme — scaled to fit, built to exceed
At its core are the same drivers as our flagship: a 1″ pure diamond tweeter, a 3″ pure diamond high-midrange, and a 7″ beryllium midrange — the largest we’ve ever used. These components offer extraordinary speed, resolution and control, and they’ve set a new benchmark for us. We knew early on that everything else would have to rise to meet them.
So we reworked the crossover from scratch — a first-order design with custom-built components, chosen and tuned by ear. Internal wiring is Jorma Paragon throughout, delivering the highest possible signal purity.
The cabinet is a multi-layer laminate of carbon fibre, aluminium, wood and fibreboard, designed to be acoustically inert. Underneath, mirror-polished stainless steel stands support our Marten Isolators, which decouple the speaker from the room and allow the system to breathe. The result is a soundstage that’s focused and precise — with instruments and vocals locked into place, and space around them that feels natural and three-dimensional.
The bass section features two 10″ aluminium sandwich woofers with long excursion and tight response, giving the speaker real low-end authority without smearing the detail above. The frequency response reaches from 18 Hz to 60 kHz with a sensitivity of 89 dB — a solid match for a wide range of high-end electronics.
We premiered Coltrane Quintet Extreme at High End Munich 2025, with a full demonstration setup. For us, it felt like the perfect companion to Coltrane Supreme Extreme — not just a scaled-down version, but a statement in its own right.
The result is a speaker that’s immersive and honest. Treble is precise and open. Midrange is full of colour and control. And the bass has real weight without ever feeling heavy-handed. It’s finely balanced and full of character — the kind of speaker that makes you want to keep playing one more track.
Coltrane Quintet Extreme is hand-built in Sweden and limited to just ten pairs worldwide.
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