L-Acoustics X15 HIQ, Руководство пользователя

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Maintenance
Listening test
Procedure
1. Load the preset on an LA4X / LA8 / LA12X amplied controller.
2. Connect a sinus generator to the amplied controller.
Risk of hearing damage
Set a low sound level to start and use ear protection to adjust before testing.
3.
Scan the bandwidth focusing on the usable range.
The sound should remain pure and free of unwanted noise.
Troubleshooting for HF speakers
One or more HF loudspeaker produces high-frequency harmonic distortions, strange vibrations or weak sound.
Possible causes
• There are foreign particles on the air gap.
• The screws used for reassembly are too loose.
• The diaphragm is damaged.
• The number of shims is wrong.
Procedure
1.
Perform the diaphragm disassembly procedure.
2.
Visually inspect the diaphragm and the voice coil.
If any damage is visible, replace the diaphragm.
3. Clean the air gap thoroughly.
4. Perform the reassembly procedure.
Pay close attention to the number of shims and the position of the diaphragm.
Apply the recommended torque.
5.
Repeat the listening test.
If a buzzing sound is still audible, it might be necessary to add an extra shim on the air gap.
Troubleshooting for LF speakers
One or more LF loudspeaker produces distorted, buzzing, rubbing, clicking, mufed or weak sound.
Possible causes
• The screws used for reassembly are too loose.
• There is an air leak in the gasket.
• There is dust on the cone.
• The cone is damaged.
• The surround is torn or delaminated.
• The voice coil and/or the spider is damaged.
Procedure
1.
Perform the loudspeaker disassembly procedure.
2.
Visually inspect the loudspeaker and the cables.
If any damage is visible, replace the loudspeaker.
3. Carefully clean the loudspeaker with a dry cloth.
4. Perform the reassembly procedure.
Replace the loudspeaker gasket and the screws.
Apply the recommended torque.
5.
Repeat the listening test.
If the problem persists, replace the loudspeaker.
X15 HiQ user manual (EN) version 5.0 33