INSTALLATION
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.
HPF
Slope
Model
Freq
dB
1244
60
24
1264
60
24
1266
60
24
1294
60
24
1296
60
24
1299
60
24
1544
60
24
1564
60
24
1566
60
24
1594
60
24
1596
60
24
1599
60
24
3564
50
24
3594
50
24
*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.
Table 6: DSP Settings for iBOX Biamp Operation
Low Frequency
LPF
Slope
Filter*
Freq
dB
LR
1360
24
LR
1360
24
LR
1360
24
LR
1360
24
LR
1360
24
LR
1320
24
LR
1320
24
LR
1360
24
LR
1360
24
LR
1280
24
LR
1360
24
LR
1320
24
Low Frequency
LR
510
24
LR
450
24
Community iBOX Installation/Operation Manual — Page 27
Filter*
Delay us
LR
313
1600
LR
229
1600
LR
354
1400
LR
458
1600
LR
458
1560
LR
188
1720
LR
229
1720
LR
313
1720
LR
313
1720
LR
354
1400
LR
313
1760
LR
104
1720
BU
0
650
BU
0
600
High Frequency
HPF
Slope
Freq
dB
Filter*
24
LR
24
LR
24
LR
24
LR
24
LR
24
LR
24
LR
24
LR
24
LR
24
LR
24
LR
24
LR
Mid-High
12
BU
24
BU
Gain
-9
-6
-6
-5
-4
-4
-4
-5
-5
-4
-4
-4
-2
0
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