Wisdom Audio S90i In-Wall (2×6) RTL Subwoofer (Each) hpw-feature-inlineremote or even high-purity copper aided

or even high-purity copper aided by spring and wedge devices

including photos

the f113v2 delivers a tremendous level of sound quality

And ZEN out…

5-way monitor offering unrivalled transparency

Wisdom Audio S90i In-Wall (2×6) RTL Subwoofer (Each) hpw-feature-inlineremote or even high-purity copper aidedThe S90is highly efficient design yields fast, dynamic, articulate results with accurate timbre. This is a high end subwoofer solution for customers who desire no compromise performance, but prefer the aesthetic benefits of custom installed, hidden loudspeakers. The S90is superb performance characteristics include a flat response to 20 Hz with usable in room energy down to 17 Hz, and outstanding dynamic capability, and accurate timbre reproduction.