RBH Sound C-4, Owner'S Manual

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Features
At the heart of the RBH CT Series speakers are proprietary aluminum cone woofers
and midrange drivers. Aluminum combines stiffness, low mass and self damping
properties in a manner which allows virtually uncolored presentation of program
material.
A powerful magnet, extended voice coil and bumped back plate give the bass/
midrange divers high excursion capability. This ensures accurate dynamic
reproduction. The drivers are shielded by a steel cup and additional magnet to
cancel any stray magnetic field that my cause interference with video equipment
such as tube televisions.
For high frequencies, a high quality silk dome tweeter is used. This tweeter is also
magnetically shielded, and uses liquid cooling to allow greater power handling.
Each CT Series speaker features an extensive crossover network. Steep acoustic slope
crossovers are used to integrate drivers. The use of steep crossover slopes allows
for higher power handling, minimizes driver interaction anomalies, and maximizes
the ability of each driver in their respective band of frequencies. Large 5-way binding
posts ensure a good, solid electrical connection to these crossover networks.
Cabinets are constructed from cast aluminum. The cabinets also have a narrow
profile to minimize cabinet diffraction. The speakers virtually disappear
leaving only a deep, wide sound stage with pinpoint imaging. Gold binding
posts ensure a good electrical contact. Sophisticated computer modeling and
measurement techniques are used extensively throughout the RBH CT Series
speakers design process