Wilson use separate modules to isolate drivers from internal standing waves. Wilson Benesch use different design solutions depending on the model. The closest model in size/cost to the S5 Mk2 (Act One Evolution) uses a separate ported midrange/tweeter enclosure. Whilst Magico use a Computer-modeled midrange enclosure designed to optimally isolate the midrange from the backwave of the bass drivers & breakup internal standing waves, so it works a bit differently.
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Yes melbguy thanks. It appears that even a company so focused on aluminum recognizes excellent enclosures can be made from other materials; as Wilson has advocated the benefits of composites and used them for years. Interesting departure for Magico I feel, and sensible. But I wonder it detract from the "permanence" of the all-metal efforts?
Companies like Wilson, Wilson Benesch and Rockport have long experience designing composite cabinets. Similarly Magico have long experience using aluminium cabinets. Most loudspeakers have some compromise to balance cost and performance, whilst Magico’s M3 and Rockport’s Lyra are more cost no object designs. If Magico used the M3’s composite carbon cabinet for the S5 Mk2, it would probably add $15k to the price.
I can certainly attest that the Magico S5 mk2’s aluminium cabinet is highly inert, even on energetic music passages. That is due to a number of design features incl: sheer mass (1/2" thick cabinet walls), a curved cabinet, heavy bottom plate with 4 point outrigger feet, machined 3D convex top plate etc. Though being aluminium, the cabinet still needs a little help. So Magico use 5-layer damping mats to prevent any audible ’excitement’ from the cabinet.
The proprietary polymer material used for the midrange enclosure would have been chosen as it provides all the right qualities to meet the design goals, without the need to use more expensive moulded carbon fiber, or carbon composite material. You can see a frequency response curve of the S3’s midrange enclosure here - http://magico.net/product/s3.php
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