Bose LT 9402TM, LT 4402, LT 9702, LT MB24 III manual Service Information

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Service Information

11.Slowly and gently rotate the diaphragm assembly so that the coil is worked into the gap in the front of the compres- sion driver, is centered in the gap, and the diaphragm assembly rests smoothly against the front plate of the compres- sion driver. The screw holes in the diaphragm can be visually lined up with the screw holes in the front of the compression driver assembly to help center the coil into the gap.

12.Align the holes in the diaphragm assembly with the holes in the front of the compression driver assembly.

13.Place the rear cover back on by aligning the three screw holes and the three post holes.

Note: Make sure the assembly fits together, is flush, and the holes align.

14.Place a screw with lock washer into each of the three holes.

15.Apply a sine-wave to the driver at a frequency of 300Hz and a maximum amplitude of 2 volts.The unit should produce a tapping sound, not a buzzing sound. If you hear a buzzing sound, center the diaphragm coil in the gap until the buzzing sound goes away.

16.Slowly tighten the three screws, alternating turns so there is even pressure on the back cover. If you hear a buzzing sound as you tighten, back off the screws until the buzzing sound goes away. Resume tightening the screws, paying attention to alternately tightening each screw the same number of turns. Tighten each screw to a maximum torque setting of 25 inch-pounds.

17.Sweep the frequency of the sine-wave from 300Hz to 1kHz and listen for buzzing. If you hear buzzing, readjust the diaphragm or clean the gap again. Dirt and/or misalignment of the diaphragm causes buzzing. Continue sweeping the frequency until you do not hear any buzzing. The driver is ready to use.

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Contents Bose Panaray LT Series III Loudspeakers Declaration of Conformity Declaration of ConformityContents Read the instructions Safety InformationMounting Guidelines How to Use This Reference Guide LT 3202-III Loudspeaker Mechanical SpecificationsLT 4402 -III Loudspeaker LT 9402-III Loudspeaker LT 9702-III Loudspeaker LT MB24-III Modular Bass Loudspeaker Recommended Wire Gauges Acoustical Specifications and WiringInternal Conﬁgurations Acoustical Speciﬁcations and Wiring To reconﬁgure your LT 3202-III loudspeaker only To reconﬁgure your LT MB24-III modular bass loudspeaker LT 3202-III Acoustical Speciﬁcations LT 3202-III Loudspeaker Product DescriptionLT 3202-III Loudspeaker Active Equalization Curves LT 3202-III Loudspeaker ConﬁgurationsLT 4402-III Acoustical Speciﬁcations LT 4402-III Loudspeaker Product DescriptionLT 4402-III Loudspeaker Active Equalization Curves LT 4402-III Loudspeaker ConﬁgurationsLT 9402-III Acoustical Speciﬁcations LT 9402-III Loudspeaker Product DescriptionLT 9402-III Loudspeaker Active Equalization Curves LT 9402-III Loudspeaker ConﬁgurationsLT 9702-III Acoustical Speciﬁcations LT 9702-III Loudspeaker Product DescriptionLT 9702-III Loudspeaker Active Equalization Curves LT 9702-III Loudspeaker ConﬁgurationsLT MB24-III Acoustical Speciﬁcations LT MB24 Loudspeaker Product DescriptionLT MB24-III Loudspeaker Active Equalization Curve LT MB24-III Loudspeaker ConﬁgurationsLT MB24 Modular Bass Loudspeaker Active EqualizationOther methods of providing active equalization LT Series III Mid/High LoudspeakersPanaray LT Replacement Parts Service InformationPainting Information Service Information Remove the replacement diaphragm from its carton Service Information To Replace the V-2 Mid-frequency Driver in the Panaray LT Service Information Service Information LT 3202-III Loudspeaker Driver and Electronics AssemblyLT 4402-III Loudspeaker 10 11 12 13 14 15 24 23 22 LT 9402TM-III LoudspeakerLT 9702-III Loudspeaker LT MB24-III Loudspeaker