Figure 10: Pad 04 (4 Amplifiers Per Rack) - L-Acoustics dV-DOSC Operator's Manual

resistant polyethylene cover provides protection for the rack during transport so that no external
case is required. Four recessed Aeroquip flytrack sections are mounted on both sides of the amplifier
rack for flying applications.
There are recesses in the top cover of each rack that allow racks to be stacked on top of each other
with the castors still attached. It is also possible to remove the casters on one amplifier rack, place it
on top of a second amp rack and then mechanically bolt the two racks together. Overall the L-
ACOUSTICS amplifier rack provides an extremely efficient package in terms of power versus size
and weight while at the same time maintaining flexibility for smaller scale and distributed system
applications.
NOTE: As installed in RK12-4, all L-ACOUSTICS LA 48 amplifiers are rear supported. Rear support of L-
ACOUSTICS LA amplifiesr is strongly recommended for all portable or touring sound applications.
V-DOSC AMP PANEL
SPEAKERS - CH A
The PAD04 panel is intended for 4 amplifier-per-rack packaging and allows for connection of
loudspeakers, input signal and output signal loop through. The panel has dual 8 pin female CA-COM
connectors for loudspeaker connection and two male 19 pin CA-COM connectors for input signal
connection (using either AMP LINK or CROSS LINK cables) and for jumping to subsequent amp
racks (using AMP LINK cables). Ch A and Ch B COMB connectors allow the rack to be configured
for either 2-way, 3-way or SUB operating modes.
Internally, two sets of 4X male XLR fanouts connect the input signal from the 37-pin Dsub
connector via the COMB connector on PAD04 to the amplifier inputs. For the CA-COM connector,
lines 5 and 6 are always assigned to 2-way fill (high and low, respectively). Line 4 is reserved for
subwoofer drive while lines 1, 2 and 3 are for V-DOSC high, mid and low, respectively. For
complete details regarding CA-COM line assignments, PAD04 wiring and COMB connector wiring,
please refer to the table below.
In 3-way mode, 8 pin loudspeaker CA-COM pinouts for channels A and B are as follows:
A/B = V-DOSC LOW AMP#3 +/-
C/D = V-DOSC LOW AMP#4 +/-
E/F = V-DOSC MID AMP#2 +/-
G/H = V-DOSC HIGH AMP#1 +/-
In 2-way mode, 8 pin loudspeaker CA-COM pinouts for channels A and B are as follows:
A/B = HF AMP#3 +/-
C/D = LF AMP#4 +/-
G/H = HF AMP#1 +/-
E/F = LF AMP#2 +/- .
Either DOFILL or DO2W adapters are used to convert from 8 pin CA-COM to dual Speakon
connectors. Individual Speakon pinouts are : +1/-1 = dV-DOSC LF +/- ; +2/-2 = dV-DOSC HF +/-
.
dV-DOSC dV-SUB Manual V2.0
CH A
SIGNAL
INPUT

Figure 10: PAD 04 (4 amplifiers per rack)

Nov 2001
L-ACOUSTICS
CH B
SIGNAL
SPEAKERS - CH B
OUTPUT
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