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Amphion FlexBase25

Bass Extension System By Neil Rogers
Published November 2020

Amphion FlexBase25/

Amphion’s innovative FlexBase system offers true‑stereo sub‑bass in a single speaker cabinet.

Finnish speaker designers Amphion have been growing a steady and devoted list of users over the last four or five years, with their distinctive, minimalist‑looking speakers becoming increasingly visible in professional studios. Originally a hi‑fi company, they now produce a range of studio monitors that are somewhat unusual these days in that they are all passive (the vast majority of new studio monitor releases are active or powered designs). SOS reviewer Phil Ward heard plenty to like when he reviewed their One15 and One18 models back in 2017, and if you’re interested in some of the technical background to their designs that review is well worth a read:

For review here we have their FlexBase25, which Amphion describe as a “stereo bass‑extension and management system”. The core concept of this system is Amphion’s belief that even very low frequencies need to be reproduced in stereo to be truly accurate. This goes against the common perception that, because low frequencies are non‑directional, subwoofers don’t necessarily need to reproduce the left and right channels separately. The FlexBase25 System is Amphion’s solution to what they see as a shortcoming with traditional mono subwoofers, which they say can create more problems than they solve. This intrigued me as, although I haven’t auditioned a huge range of subwoofers, the ones I have tried have always, to me, sounded slightly disconnected...

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Published November 2020