Operating instructions

Community CLOUD12 – Operation Manual - Page 19

NOTE: The electrical damping factor of the subwoofer amplifier is a critical factor when selecting

equipment to support the CLOUD12SUB. Damping factor refers to the power amplifier’s ability to

stop (or “dampen”) a reproduced frequency. The higher the damping factor, the better the amplifier

will control the LF driver. Bass frequencies are more difficult to control than higher frequencies, and

therefore the damping factor becomes more important to the overall system. The higher the

damping factor, the better the amplifier will control the LF driver. The damping factor of an amplifier

is dependent largely on its output impedance. A high damping factor indicates that an amplifier will

have greater control over the movement of the speaker cone, particularly near the resonant

frequency of the driver’s mechanical resonance. Community recommends that the damping factor of

the subwoofer amplifier be greater than 100 @ 8 ohms. Additionally, the cable chosen should be at

least 14 AWG for optimum LF reproduction with minimum line loss and minimum reduction in

damping factor. It should be further noted that damping factor is more of an influence in a low

impedance (8 ohm) system than a high impedance (70.7V) system.

The CLOUD12SUB ceiling subwoofer is shipped with 24 inches of two-conductor, 16 AWG speaker cable

attached via crimped spade terminals on one end. The other end is stripped and ready to connect via wire

nut to incoming cable. See the figure below for input terminal designation.

Figure 19: CLOUD12SUB wiring and input panel (8 ohm operation)

Figure 18: CLOUD12SUB and CLOUD12SUB-T

CLOUD12SUB

(

70V/100V OPERATION)

CLOUD12SUB (

8 OHM OPERATION)