Owner`s manual

PAGE 14 Community Solutions™ Owner’s Manual
wavefront, as if from a single source. The SBS subwoofers do not have internal crossovers. This
function must be supplied by external electronic devices.
5.6 Operating Modes: PASSIVE and BIAMPLIFIED
A switch on the SLS input panels selects between either of two operating modes: PASSIVE mode (single
amplifier) or BIAMPLIFIED mode (separate low and high frequency amplifiers). In PASSIVE mode, the
internal crossovers of the SLS loudspeakers divide the audio signal into the separate frequency ranges
for each driver. In BIAMPLIFIED mode one amplifier is used to power the low frequency driver(s) and
another is used for the mid-high frequency section.
5.7 PowerSense™ DDP Circuit
Each SLS crossover has PowerSense DDP (Dynamic Driver Protection) circuitry that automatically
provides thermal and over-current protection for the individual drivers. This circuitry senses the
power delivered to each driver and, if it exceeds a level that could damage the driver, PowerSense
automatically reduces the power to the driver. Assuming an amplifier of appropriate size is used, the
PowerSense DDP circuit provides a high degree of protection against loudspeaker damage. This
proprietary circuitry helps ensure that your SLS loudspeakers will keep on performing at their best.
The SBS subwoofers do not have PowerSense DDP protection. Protection must be supplied by external
electronic devices.
5.8 Electronic Control
The Community Solutions loudspeaker systems are specifically designed to be electronically-controlled
using an electronic loudspeaker controller or processor.
5.9 Power Handling Specifications
The published power handling specifications, RMS and Program Power, for the SLS and SBS
loudspeakers are ONLY applicable when electronic system controllers are used.
5.10 Enclosures
The SLS and SBS enclosures are constructed of 13-ply, void free, Baltic Birch plywood with extensive
bracing, making an extremely strong enclosure that will not resonate or flex, even at maximum bass
output. Except for the rectangular SBS45 subwoofer, all SLS and SBS enclosures are trapezoidal. The
trapezoidal shape facilitates arraying of multiple enclosures. This shape also allows installation in
tight spaces often encountered in both permanent installations and portable applications.
5.11 Mounting And Rigging
Each Community Solutions loudspeaker enclosure has eight 3/8”-16 threaded nut suspension points –
four in the top and four in the bottom. These points are connected top to bottom inside the enclosure
with steel bracing. They are designed to be used with Community’s optional eyebolt and washer kit –
EYBLTKIT. When used with a rated shoulder eyebolt, 3/8”-16 thread T-nuts on the rear panel can be
used as a convenient pull-back point to set the enclosure down-angle for proper coverage. The SBS45
has no pull-back point.
5.12 Handles
The handles on the SLS and SBS loudspeakers are of high strength, all steel construction. They are
placed in relation to the center of gravities for easy lifting when used in portable applications. Multiple
handles are used on the largest enclosures where the weight requires more than one person for lifting.
White (-WHT) models come standard without handles.
5.13 Feet and Stand Mounts
The loudspeaker is provided with four rubber feet for floor or shelf installation. The feet also provide a
means to stabilize stacked enclosures. Additionally, the SLS915, SLS918, SLS920 and SBS12 have
threaded inserts in the bottom that mate to appropriate Omnimount™ brackets or Ultimate Support™
stand sockets.