Db J12 Manuel d'utilisateur télécharger pdf (Page 5)

Connections

Sense D riv e

passive

cro ssover

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

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Db J12 Manuel d'utilisateur Page 5

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