KV2 Audio SDD3 - Manual (Page 14)

Subwoofer mode
For cardioid setup, you can calculate and set the
delay for each subwoofer manually, or you can use
cardioid setup in the SDD3 menu.
For manual - idependent sub outputs setup, use the
normal mode. For cardioid setup use the cardioid
mode. When cardioid mode is selected, the
subwoofer outputs are linked together with λ/4
distance between front and rear subwoofer outputs.
In cardioid mode, the selected cardioid tuned
frequency can be operated in range from 40Hz to
120Hz with 10Hz steps.
The subwoofer pair's polar characteristics are cardi-
oid on this frequency, whilst uder and above this
frequency the polar characteristics of the subwoofer
pair are omnidirectional with increasing difference
from cardioid frequency. The cardioid distance is
shown on the cardioid frequency setup screen.
0 m 1 m 0,75 m 2 m 1,4 m
Cardioid frequency
Front Sub
(λ/4 delayed) Rear Sub
STAGE
subwoofer input
LEVEL
Mode
Subwoofer mode:
Subs distance: 1,04m
Frequency
DELAY MENU
MENU screen - Delay mode
Cardioid subwoofers wiring
cardioid ( )
( )
60Hz
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SDD3 Setup