Community R-Series Installation/Operation Manual for Models R.5 and R.25 — Page 14
R - S E R I E S F E AT U R E S
R-Series products are entirely constructed of corrosion-resistant materials like fiberglass, stainless steel,
polyimide and carbon fiber, using sophisticated technologies to ensure they will withstand exposure to harsh
environmental conditions.
Weather-Treated Cones
Community applies a special weather treatment to the low-frequency cones used in R-Series products to
maximize their long-term resistance to temperature, moisture and dry-rot problems.
Weather-Resistant High- and Mid-Frequency Diaphragms
R.25 and R.5 models feature non-metallic, weather-resistant diaphragms.
Ferrofluid
Most LF, MF & HF drivers use Ferrofluid in their voice coil gaps. Ferrofluid provides improved heat transfer to
the magnet structure resulting in higher power handling, reduced distortion from fluidic dampening of mechanical
resonance, and it seals the air gaps against corrosion and oxidation.
Driver Protection
Functioning as a multi-stage limiter, Community’s exclusive DYNA-TECH™ protection circuitry found in many
R-Series models provides precise and repeatable protection by reducing excessive power to the drivers. In
other models PowerSense™ DDP (Dynamic Driver Protection) protection circuitry is built into the crossover to
provide protection against excessive current.
Fiberglass or Polyethylene Horns and Enclosures
Horns and enclosures on larger R-Series models are constructed of hand-laid fiberglass. Fiberglass is inherently
weather-resistant while exhibiting the strength, stiffness and non-resonant characteristics needed to insure an
acoustically inert loudspeaker enclosure. Enclosures and horns for most R.5 and R.25 models are attractively
molded from highly weather-resistant polyethylene or high-impact ABS. The R.5HP horn is fiberglass.
The unique curved shape of R-Series and WET II helps reduce standing waves within the enclosure for
improved LF performance. Outdoors, the rounded shape inhibits standing water and helps to diffract wind,
which in turn reduces the wind load on the supporting structure.
Horn Technology
Community is the originator and master of fiberglass horn manufacturing. The horns used in many WET II and
R-Series loudspeakers are constructed as one-piece, precision waveguides by hand-crafting on a precision mold
using 100% hand-laminated fiberglass. Balsa wood is embedded and laminated into the fiberglass at strategic
points to create extremely strong, double wall constructions which dampen vibrations providing clean, resonant-
free sound. In compact R-Series models, the horns are constructed of high-impact ABS plastic with reinforcing
ribs to dampen vibrations. Perforations in the horn reduce reflections from the LF driver while still providing
optimum pattern control and acoustic loading for the high frequency driver.
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