Hf Diaphragm; Connector Plate - L-Acoustics KARA Manuel D'utilisation

8.3.6

HF diaphragm

Replacement kit and tools
KR HSBC34, sine wave generator, electric screwdriver with torque selector (N.m or in.lb
bit, KR LOCKBLUE, 2-sided tape.
HF diaphragm removal procedure
1. Remove the connector plate by removing the 6 Torx
2. Disconnect both cables from the transducer (push the spring-loaded terminal, slide the cable out, and release the
terminal).
3. Remove the back cover from the transducer by removing the 4 hex screws (3 mm hex bit) and pull the diaphragm
out from the magnet.
HF diaphragm mounting procedure
1. Verify that the voice coil gap on the transducer is free from any particles. If necessary, clean out the gap by using
2-sided tape.
2. Install the diaphragm in the gap.
3. Install the back cover and screw in four hex screws (3 mm hex bit, 2 N.m/18 in.lb
screws while screwing so as to properly center the diaphragm.
4. Apply a low level LF sine wave (for example: 1 volt at 440 Hz) to ensure that the diaphragm is properly centered
in the gap (a pure sound should be heard). If not, slightly unscrew, center, screw, and make another test.
5. Connect the red cable to the red terminal of the transducer and the black cable to the black terminal
(push the spring-loaded terminal, slide the cable in, and release the terminal).
6. Mount the connector plate and screw in six Torx
8.3.7

Connector plate

Replacement kit and tools
KR KARACNT, electric screwdriver with torque selector (N.m or in.lb
KR LOCKBLUE.
Connector plate removal procedure
1. Remove the connector plate by removing the 6 Torx
2. Disconnect both cables from the HF transducer (push the spring-loaded terminal, slide the cable out, and release
the terminal).
3. Remove both LF transducers [8.3.4, LF transducer removal procedure].
4. Remove the connector plate with its cables.
Connector plate mounting procedure
1. Pre-install the cables of the connector plate in the enclosure with a long red cable and a long black cable for each
LF transducer and the short red and black cables for the HF transducer.
2. Mount both LF transducers [8.3.4, LF transducer mounting procedure].
3. From the back side of the enclosure, connect the red cable to the red terminal of the HF transducer and
the black cable to the black terminal (push the spring-loaded terminal, slide the cable in, and release the
terminal).
4. Mount the connector plate and screw in six Torx
KARA_UM_ML_1-3
®
screws (T30 bit).
®
screws (T30 bit, thread-locker, 3 N.m/27 in.lb
), 4 mm hex bit, 5 mm hex bit, T30 Torx
f
®
screws (T30 bit).
®
screws (T30 bit, thread-locker, 3 N.m/27 in.lb
w w w . l - a c o u s t i c s . c o m
), 3 mm hex bit, T30 Torx
f
). Balance the torques between
f
).
f
®
).
f
23 en 23 23 23
®
EN
bit,