Connections
1
2
3
4
5
1
2
3
4
5
Sense D rive
passive
crossover
Fig. 2: Connector wiring
The J12 cabinet is fitted with a pair of EP5 connectors. All five pins of
both connectors are wired in parallel. The J12 uses the pin assignments
1/2 for the low drivers. Pins 3/4 drive the mid/high section. Pin 5 is
used for SenseDrive. Using the male connector as the input, the female
connector allows for direct connection to a second cabinet.
The J12 can be supplied with NL8 connectors as an option. Pin
equivalents of EP5 and NL8 connectors are listed in the table below.
LF +
LF •
MF/HF +
MF/HF •
SenseDrive
EP5
1
2
3
4
5
NL8
1+
1•
4+
4•
3•
Operation with D12
CAUTION!
Only operate J12 loudspeakers with a d&b amplifier configured for the
J12, otherwise there is a risk of damaging the loudspeaker components.
IMPORTANT!
Selecting "2-Way Active" and J12 mode enables up to two J12
cabinets to be driven actively by the D12 amplifier.
INPUT A
OUT A
2-Way
SenseDrive
OUT B
2-Way
AMP B
AMP A
Fig. 3: D12 Input/Output routing 2-Way
Active mode
The input signal is fed to INPUT A, while the input signal is routed
(linked) to INPUT B internally.
To enable SenseDrive at least one of the cabinets has to be connected
to output A of the D12 amplifier.
"J12 Arc" and "J12Line" setups
The D12 amplifier provides two setups for J12 cabinets. The selection
depends on the curvature of the array. Within a typical J12 array both
amplifier setups may be used.
The "Arc" setup is used for J12 loudspeakers in curved array sections.
The "Line" setup is used for long throw array sections with three or
more consecutive splay settings of 0° or 1°. Compared to the "Arc"
setup, the mid/-high range is reduced to compensate for the extended
nearfield.
The transition from "Line" to "Arc" configuration within the array is
made according to the splay progression but may allow for certain
deviations due to the paired wiring of the cabinets.
Controller settings
For acoustic adjustment the functions CUT, HFC and CPL can be
selected.
CUT circuit
Set to CUT, the J12 low frequency level is reduced. The J12/J8 array is
now configured for use with the d&b J-SUB, Q-SUB or B2-SUB
subwoofers.
J12 Manual
(1.2 EN)
Page 5 of 8
Summary of Contents for J12
Page 1: ...J12 Manual 1 2 EN ...
