G Sub 1501 dp
5 Operation
13
Installation using three subwoofers (recommended):
The performance of the cardioid configuration is better when 3 subwoofers are used together. The
units can be stacked on top of each other or laid side by side on the ground. If in a stack, the low-
est unit should face the rear. If laid side by side, the middle unit faces the rear.
As in the previous example with two subwoofers, the rearwards facing subwoofer is operated in
Cardioid Mode. The two forwards facing units are operated as normal without the Cardioid Mode
activated (e.g. one G Sub 1501 dp+ with a passive G Sub 1501 connected to the parallel output
SpeakON (4) and the Cardioid Mode not selected). All of the subwoofers in the configuration
should be operating at the same level and with the same cut-off frequency to get the best result.
Note:
Both subwoofers must be set to the same cut-off frequency. The cardioid preset of rear-facing
subwoofer must be activated.
Application example:
Only the rear-facing subwoofer is operated in Cardioid Mode. This applies regardless of whether
the two units are stacked on top of each other or laid side by side on the ground.
G Sub 1501 dp
120 Hz, Cardioid Mode, 0 dB
e.g. G Sub 1501 dp or dp+
120 Hz, not in Cardioid Mode, 0 dB
e.g. G Sub 1501
passive connected
