Inspection and preventive maintenance
Listening test
enclosure
preset
usable bandwidth
Kiva II
[KIVA II]
70 Hz - 20 kHz
SB15m
[SB15_100]
40 Hz - 120 Hz
SB18 / SB18i / SB18m
[SB18_100]
32 Hz - 110 Hz
Procedure
1.
Load the preset on an LA12X / LA4X / LA8 amplied controller.
2.
Connect a sinus generator to the amplied 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 LF speakers
One or more LF loudspeaker produces distorted, buzzing, rubbing, clicking, mufed or weak sound.
Possible causes
• The screws are not tightened with the appropriate torque.
• 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 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.
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.
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.
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Kiva II owner's manual (EN) version 1.0