Community iBOX i112S, Installation & Operation Manual, Page: 27 / 48

Community iBOX Installation/Operation Manual — Page 27
Operating in Passive or Biamp Mode
All iBOX models except the i2W8 and iLF218 may be operated in either the
passive
mode or the
bi-
amped
mode, selected by a switch located on the input panel. This selector switch comes equipped with a set
screw to eliminate the possibility of an inadvertent change of switch position. The set screw must be removed
in order to alter the position of the switch. Table X shows Community’s recommended DSP settings for iBOX
loudspeakers used in bi-amp mode. Note that three-way models use the internal mid-high passive crossover in
bi-amp mode.
Table 6: DSP Settings for iBOX Biamp Operation
*LR = Linkwitz-Riley, BU = Butterworth
Recommended High-Pass Filters
When operating in either the passive or the bi-amplified mode, we strongly recommend the use of an
external, active high-pass filter to protect the cone drivers from excessive low frequency excursion. High-pass
filters will help protect the loudspeaker against damage from over excursion and will reduce low frequency wind
noise, turntable rumble, stage vibration, and other noises that result in a poorly defined and ‘muddy’ bass
response. Additionally, a high-pass filter will avoid using amplifier power that’s wasted from attempting to
reproduce frequencies below the loudspeaker’s intended operating range. Table 7 on Page 28 shows the
recommended filter settings for each iBOX model.
INSTALLATION
Low Frequency High Frequency
Model
HPF
Freq
Slope
dB Filter*
LPF
Freq
Slope
dB Filter* Delay us
HPF
Freq
Slope
dB Filter* Gain
1244 60 24 LR 1360 24 LR 313 1600 24 LR -9
1264 60 24 LR 1360 24 LR 229 1600 24 LR -6
1266 60 24 LR 1360 24 LR 354 1400 24 LR -6
1294 60 24 LR 1360 24 LR 458 1600 24 LR -5
1296 60 24 LR 1360 24 LR 458 1560 24 LR -4
1299 60 24 LR 1320 24 LR 188 1720 24 LR -4
1544 60 24 LR 1320 24 LR 229 1720 24 LR -4
1564 60 24 LR 1360 24 LR 313 1720 24 LR -5
1566 60 24 LR 1360 24 LR 313 1720 24 LR -5
1594 60 24 LR 1280 24 LR 354 1400 24 LR -4
1596 60 24 LR 1360 24 LR 313 1760 24 LR -4
1599 60 24 LR 1320 24 LR 104 1720 24 LR -4
Mid-High
3564 50 24 LR 510 24 BU 0 650 12 BU -2
3594 50 24 LR 450 24 BU 0 600 24 BU 0
Low Frequency