SAGE SERIES C225i
WISDOMAUDIO.COM
5
To get comparable bass performance from a planar magnetic design, you would
need to have a huge speaker that would be impractical in most domestic living
spaces. It simply makes more sense to use the best transducer technology in each
area of the reproduced spectrum. One of Wisdom Audio’s strengths is in seamlessly
blending these technologies – particularly important given the high standards set by
our planar magnetic drivers.
Of course, the dynamic woofers themselves must be rather extraordinary to “keep
up” with the planar magnetic drivers right up to the crossover frequency.
Our woofers are different because they must be to do their job. Specifically, we
need highly dynamic, uncompressed bass (to keep up with the planar magnetic
drivers) that does not depend on a critical amount of enclosure volume (since these
speakers are mounted in your wall and use the space inside the wall as their
“enclosure”). These two design goals require rather extraordinary attention to
myriad details.
The motor and suspension system of these woofers therefore includes all the critical
damping required for optimal operation. (In most speakers, the woofers depend on
the air trapped inside their enclosures as an additional “spring” to help them
behave properly.) Technically, this approach is known as an “infinite baffle”
design. In practice, the volume of air behind the speaker does not have to be
infinite, of course. It just needs to be large enough to not act like an acoustic
“spring”. Recommended and minimum enclosure volumes for the speaker are
listed in the Specifications section and repeated on the Dimensions page.
Many speakers include a mid-bass “bump” in their response to give the illusion of
going deeper in the bass than they actually do. Unfortunately, this “bump” makes
blending them seamlessly with a high-quality subwoofer almost impossible.
All
Sage Series
speakers have been designed to optimally crossover at
80 Hz, which is the most common bass management transition used to integrate
with subwoofer(s).
Line Source Speakers
Almost all loudspeakers radiate sound into the room as imperfect “point sources”.
This means that most of the energy they put into the room expands as an ever-
enlarging sphere, as though emerging from a single point in space. This results in a
multitude of reflections from the ceiling and floor that can degrade sound quality.
