Installation manual

Community S-Series - Operation and Installation Manual - Page 14
GENERAL DESCRIPTION
S-Series loudspeakers are designed for demanding day-to-day use in a wide range of both
portable applications and fixed installations. Their high quality driver components are
housed in rugged, acoustically inert enclosures fitted with convenient carrying handles,
rigging fittings, and support stand receptacles. S-Series is characterized by a high-power,
low distortion linear response that provides exceptional musicality and speech intelligibility.
The S-Series consists of six models:
• S-1296 - a 12” / 1” two-way, in a multi-angle enclosure suitable for FOH or
Stage Monitoring.
• S-3294 - a 12” / 1” three-way which includes the addition of a horn-loaded
6.5” cone driver, in a trapezoidal enclosure.
• S-1596 - a 15” / 1” two-way, in a trapezoidal enclosure.
• S-3594 - a 15” / 1” three-way which includes the addition of a horn-loaded
6.5” cone driver, in a trapezoidal enclosure.
• S-215S - a dual 15” subwoofer, in a rectangular enclosure.
• S-218S - a dual 18” subwoofer, in a rectangular enclosure with integrated
casters.
Note: All models have integrated support stand fittings.
When used in multiples, S-Series loudspeakers array well. Systems may be designed
around horizontal splayed arrays, vertical splayed arrays, as well as exploded clusters and
distributed configurations. Rigging kits are available from the factory as standard items
(see the section on Rigging Hardware on page 46).
The specifications table on page 9 depicts dimensions, weights and general specifications of
the various S-Series models.
DYNA-TECH DRIVER PROTECTION SYSTEM
All S-Series loudspeakers employ Community’s advanced technology DYNA-TECH driver
protection system. Functioning as a multi-stage limiter, DYNA-TECH circuitry provides
precise and repeatable protection by reducing excessive power to the drivers under abusive
conditions.
The first stage of limiting is designed to protect against short-term excess power applied to
the high-frequency driver(s) in the system. This circuit utilizes an HPCCR (High Positive
Current Coefficient Resistor) in series with the driver(s). The HPCCR increases resistance
as the current flowing through it increases. As its resistance rises above nominal, the
heating of the element provides RMS conversion. The result is an RMS limiter with a ratio
that varies according to the demands of the program material.
The second stage of limiting protects against excessive power levels to all drivers in the
system. This stage is based on a relay driven through a voltage sensing circuit. The relay
engages at a pre-determined voltage, corresponding to a power level that would otherwise
cause driver damage. When engaged, the relay introduces a bank of high-wattage resistors
in series with the drivers. These resistors cause a voltage drop to the drivers, thereby
reducing the power applied to them. A red LED on the rear panel indicates that this
protection circuit has been engaged.
When the relay protection circuit is activated, there will be a noticeable drop in the system’s
level (approximately 3 to 4 dB). The red LED, as well as the drop in level, serves as a
warning to the operator that the loudspeaker is being overdriven. When this stage of
protection is engaged, the level of console and/or amplifier output to the system
should be reduced.