en surfant sur le site du fabriquant de support MANA ACOUSTICS, je suis tombé sur quelquechose de particulier : les supports d'enceintes de ce fabriquant ont la particularité d'être dédiés uniquement à des enceintes actives SBL, Isobarik et ATC. Etonnant non ?
le petit texte :
Having devoted our attention to turntables, CD players and amplifiers for many years, we subsequently decided to see if the Mana support philosophy would benefit loudspeakers. It did - frequently to a degree that amazed and delighted us. We now offer dedicated stands for floor standing speakers such as the Naim SBL and Linn Isobarik and ATC loudspeakers. Other floor-standing speakers have responded equally well to being placed on one or more Sound Stages. We've also discovered that these platforms regularly have a dramatic effect when used under compact speakers, mounted on other manufacturers stands.
le support pour les SBLs :

cela fait des doubles-pointes : bizarre.
pour les Isobarik et ATC :

ainsi que le lien vers le site
http://www.mana.co.uk/products.htm
à+
Hervé.