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Community R1 Series Owner’s Manual
A separate high frequency fiberglass horn is bolted into the mouth of the bass horn. All bolts and screws for
mounting the enclosure, the grille and the mid/high horn assembly are stainless steel.
5.6 WEATHER-STOP
TM
GRILLE (Grille information does not apply to BNG models)
Each R1 enclosure is fitted with Community’s proprietary three-layer Weather-Stop™ protective grille. The grille
consists of a corrosion-resistant outer layer of perforated steel with a proprietary zinc-rich epoxy dual-layer
powder coat finish in light grey, a center layer of UV-resistant reticulated foam, and an inner layer of fine-mesh
screen made from a UV-resistant synthetic material that blocks rain and fights rusting. This grille assembly
prevents water intrusion, while providing a high degree of acoustic transparency.
5.7 ACCESSORIES
TRC400 - This accessory is a line transformer for use in distributed systems and for extra long speaker cable
runs. It provides 3 taps of 200W, 100W, and 50W at 8 ohms. Two R1s may be connected to one TRC400
providing taps of 400W, 200W, and 100W. The TRC400 accepts inputs from 140V, 100V, and 70V lines.
5.8
COVERAGE PATTERNS AND AIMING AXIS
The coverage patterns for the three R1 models are straightforward with symmetrical coverage patterns meaning
the geometric axis and acoustical axis are the same. As with any conventional loudspeaker, the geometric axis
is normally used to aim the loudspeaker.
6
CHOOSING POWER AMPLIFICATION
Selecting a power amplifier for an R1 is straightforward. See SECTIONS 7.2.1 and CHAPTER 9 for an
additional consideration in selecting a power amplifier.
6.1 POWER
RATING
The R1s are rated at 200W RMS and 500W program power. The recommended amplifier is one with a rated
RMS output of from 420W to 600W at 8 Ohms. If two R1s are to be connected to one amplifier channel, use an
amplifier with a rated RMS output of from 840 to 1200W at 4 Ohms.
Using an amplifier of less power than recommended can result in amplifier clipping that can quickly damage the
drivers. The built-in PowerSense™ DDP protection circuitry cannot detect clipping nor will it function properly
when less than the recommended power is used.
Using an amplifier of more power than recommended can result in overdriving the loudspeaker with the
potential for damaging the drivers and/or the protection circuitry.
6.1
POWERSENSE™ DDP PROTECTION CIRCUITRY
All R1s are equipped with PowerSense™ DDP (Dynamic Driver Protection) protection circuitry built into the
crossover. It is designed to provide a certain measure of protection against excessive current being delivered to
the individual drivers and to the overall system. There is no external indication of when the protection circuitry is
active. For this reason it is strongly recommended as an additional precaution that an external electronic limiter
be used prior to the amplifier (See SECTION 9.1).
