Two-Way Speaker Design: The Monitor Audio Radius 90 bookshelf
loudspeaker features a two-way speaker design with one 1" C-CAM gold dome tweeter
and one 4" C-CAM cone woofer. The 1" C-CAM gold dome tweeter is optimized to
deliver the finest and widest performance within the compact speaker cabinet. It
benefits from a more efficient rear-venting design, releasing air trapped and
compressed at the back of the tweeter dome, and guiding it around the drive
assembly to a rear-loading chamber. The 4" C-CAM woofer features a large motor
and voice coil for increased excursion, high power capability and reduced
distortion. The C-CAM tweeter and woofer share an audible consistency producing
a smooth transition of frequencies and a sense of realism and cohesion in the
C-CAM Technology: The 1" tweeter and 4" woofer of the Radius
90 bookshelf loudspeaker utilize Monitor Audio's proprietary C-CAM speaker
- C-CAM Gold-Dome Tweeter: The gold dome tweeter is
formed from a ceramic-coated aluminum/magnesium alloy, gold anodized to a
specific thickness for ideal stiffness and damping characteristics. Its new
profile and surround geometry have been developed using advanced modeling
tools, to provide the optimum qualities for accurate sound reproduction. The
new design moves the first order of breakup to beyond 35kHz, producing a
linear response way beyond audibility, which matches the wide frequency
bandwidth available from HD music and cinema sound formats. The gold dome is
thinner, lighter, more rigid and therefore more efficient than domes made
from other materials which are prone to distortion in the audio band.
- C-CAM Cone Woofer: Ceramic-Coated Aluminum/Magnesium is
a material originally developed by the aerospace industry for jet engine
components. Its properties are ideal for loudspeaker cones being extremely
rigid, yet light enough to yield high overall efficiency. In manufacture,
aluminum/magnesium alloy undergoes a three-stage stress-relieving process to
remove surface deformation and molecular weakness. Once formed, the alloy
cone is subjected to a high temperature anodic coating process in which a
layer of pure ceramic alumina is depleted onto its surfaces to a depth of 50
microns, producing a completely rigid sandwich of alloy and heat-dissipating
ceramic material. Conventional cones are liable to flex or twist in
operation, producing a significant level of audible distortion. C-CAM cones
have a much higher resistance to bending stress and therefore exhibit much
greater fidelity over their entire operating range.
Single Through-Bolt Mount: The tweeter and woofer are fixed to the
cabinet with a single through-bolt driver fixing mount. This single-through-bolt
mount design provides mechanical de-coupling and enhanced midband clarity and
resolution. The through-bolts also act as rigid cross bracing to give a very
solid non-resonant cabinet.
HiVe II Bass Reflex Port: The Radius 90 uses a bass reflex cabinet
with Monitor Audio's HiVe II port design for greater efficiency and bigger bass
response from a smaller speaker. The HiVe II bass reflex port is shaped to have
the same effect on airflow as a gun-barrel on a bullet. Rifled grooves inside
the port help to accelerate the flow and reduce turbulence, so air moves in and
out of the port more efficiently, for a faster more dynamic bass response.
Stylish Cabinet: The Monitor Audio Radius 90 features a beautiful
precision cabinet in a gloss black, gloss white, or walnut veneer lacquer
finishes. The cabinet's smooth rounded edges, silver trim, and metal mesh grille
add to the style and look of the speaker.
Gold-Plated Binding Posts: The Radius 90 is fitted with gold-plated
binding post speaker terminals that will accept bare wire (up 12AWG),
pin-connectors, spade connectors, and banana plugs (single or dual).
Mounting Options: Self adhesive rubber feet are provided to prevent
movement due to vibration when using the Radius 90 loudspeakers on a table,
shelf, or stand. And thanks to its rear-panel 1/4"-20 threaded insert, the Radius 90 can
also be fixed to a wall using an optional wall-mount bracket (sold separately).
Note: Because the threaded insert and the binding-post
terminals are positioned so close together, many optional wall-mount
brackets will not fit.
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