3-Way Speaker Design: The Monitor Audio C380-IDC in-ceiling
loudspeaker features an 8" C-CAM RST bass driver and a pivoting IDC module,
housing a 4" C-CAM RST inverted midrange driver and a 1" C-CAM gold dome
tweeter. This true 3-way design provide rich midrange detail, higher system
output, greater power handling, and superior vocal intelligibility and sound
IDC Module: The Monitor Audio C380-IDC in-ceiling speaker
employs a unique pivoting Inverted Dual Concentric (IDC) midrange/tweeter module
which allows you to angle the midrange and tweeter up/down or left/right. This
allows for the in-ceiling speaker to be discreetly positioned and the sound to
be directed toward the listening zone by pivoting the IDC driver module to
maximize performance. With the IDC module installed, the in-ceiling speaker
becomes a true 3-way design, offering superior performance and flexibility over
typical 2-way or fixed angle speakers. Within the proprietary IDC module an
inverted 4" midrange driver provides superior dispersion while enabling the
midrange cone and tweeter dome assembly to be set as far forward as possible,
allowing the clear acoustics of the desired listening zone and reducing
undesirable diffraction effects. It's impossible to avoid diffraction effects
from conventional two-way designs, which locate the bass driver 3" to 6" behind
the speaker grille.
C-CAM Technology: C-CAM drivers are used throughout the
C380-IDC in-ceiling loudspeaker, providing coherent tonal balance and sonic
signature across the entering audio frequency spectrum.
- 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 Midrange and Bass Driver: 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
RST (Rigid Surface Technology): The C380-IDC in-ceiling
speaker's inverted midrange driver and bass driver combine Rigid Surface Technology (RST) with
C-CAM cone woofer design for a stronger, lighter weight cone. The Rigid Surface
Technology (RST) cone profile was inspired by the Japanese art of Origami, which
demonstrates how a very light material (like paper) can be strengthened and made
more rigid by making small and precise folds on it surface. Developed and
perfect using sophisticated computer modeling (Finite Element Analysis), these drivers have been strengthened by a pattern of dimples.
RST significantly increases cone rigidity, allowing the radiating surfaces to
resist mechanical bending forces, which can twist the shape of conventional
driver cones to produce distorted sound. The strengthening effect of RST means
that Monitor Audio can use thinner, lighter and more responsive C-CM cones which
provide speed and accuracy while offering greatly reduced distortion. The RST
patterns also help to displace standing waves that can propagate on the cone's
High Frequency Level Control: A HF (High Frequency) level
adjustment also aids in high frequency performance. With the High Frequency
Level Control set to "0", the in-ceiling speaker will give you a neutral sound.
Switching to the "+3db" setting will give the high frequencies a boost, giving
you more clarity and presence in the treble. If you want more prominence in the
bass frequencies, switch to the "-3db" setting. The HF level adjustment switch
is located on front of the baffle behind the grille.
Boundary Compensation Control: The Boundary Compensation
control reduces the speaker's bass output level to compensate for the greater
reflection of bass energy when the speaker is placed near a wall. It can be set
to "On" or "Off". The Boundary Compensation control is located on the front
baffle and hidden behind the grille.
Spring-Post Terminals: The Monitor Audio C380-IDC is
outfitted with two gold-plated spring-post terminals to connect your speaker
wire. The spring-post terminals which accept bare wire (up to 10AWG), banana
plugs (sing/dual), and angled pin-connectors.
"Trimless" Magnetic Grille: The C380-IDC in-ceiling speaker
features a steel-mesh grille that is held in place by high strength Neodymium
magnets covering the entire speaker for a true "trimless", stealth look. The
grille is paintable to blend with the living environment; additional scrim
material is provided for trouble free painting.
Tri-Grip Fixing System: Monitor Audio's innovative Tri-Grip
fixing system is easier to install than conventional clamping schemes and
provides 3x the surface area and a better surface seal, maximizing bass response
and midrange clarity. The Tri-Grip fixings are made from a tough re-enforced
polymer, giving a secure installation.
- Cutout Size: 9.75" (diameter)
- Mounting Depth: 6.25"
- Ceiling Thickness: 0.25" to 2.5"
Protective Covers: The Monitor Audio C380-IDC features a dust
protection cover that is designed to prevent the ingress of dirt or dust into
the driver and crossover.