4-Way Presets For Dv-Dosc And Dv-Sub Or Sb218 Subwoofers; Figure 14: Dv-Sub - L-Acoustics dV-DOSC Operator's Manual

4-WAY PRESETS FOR dV-DOSC AND dV-SUB OR SB218 SUBWOOFERS

4-way presets are provided for flown dV-DOSC + dV-SUB arrays when used in conjunction with
ground stacked dV-SUB or SB218 subwoofers. A 1.5:1 dV-DOSC:Subwoofer ratio is recommended
(for example: 3 dV-DOSC, 1 dV-SUB flown, 1 dV-SUB ground stacked) and separate processing is
provided for the flown versus ground stacked subwoofers.
For XTA DP226, the dV 4W dV-SUB LO/HI preset has the following output channel assignments:
Output 1
Output 2
Output 3
Output 4
Output 5
Output 6
and the dV 4W SB218 LO/HI preset has the following output channel assignments:
Output 1
Output 2
Output 3
Output 4
Output 5
Output 6
For both examples, output 6 can be used for auxiliary sub drive via input B. The corresponding
presets for BSS are named: DV 4W DVS L/H and DV 4W SB L/H.
Note: For 4W presets, the crossover frequency between the flown dV-SUB and dV-DOSC low section is 120
Hz to optimize the power bandwidth for both sections. The overall operating bandwidth for the flown dV-
SUB is 30 Hz – 120 Hz while the operating bandwidth for ground stacked subs (dV-SUB or SB218) is 30-80
Hz. Depending on how ground stacked subs are processed (discrete aux drive or mixed drive, i.e., same
signal sent to the flown and ground stacked subs), due to the overlap of the operating bandwidths for flown
versus ground stacked (30-120 versus 30-80) the 180 degree phase shift due to the 80 Hz low pass filter
may have to be compensated for by inverting the polarity of the ground stacked subwoofers. For the
standard preset, polarity for output channels 1 and 6 is positive – experiment with polarity during tuning
and time alignment to get the best result.
1) dV 4W dV-SUB LO/HI (XTA)
dV 4W DVS L/H (BSS)
dV-DOSC dV-SUB Manual V2.0
dV-SUB ground stacked
dV-SUB flown
dV-DOSC low section
dV-DOSC high section
fullrange
dV-SUB ground stacked
SB218 ground stacked
dV-SUB flown
dV-DOSC low section
dV-DOSC high section
fullrange
SB218 ground stacked
(input A)
(input A)
(input A)
(input A)
(input A)
(input B)
(input A)
(input A)
(input A)
(input A)
(input A)
(input B)
1) dV 4W SB218 LO/HI (XTA)
dV 4W SB L/H (BSS)
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