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Instructions/Installing the KF850z
NL8 and AP6 Upgrade Kits
The KF850z AP6 Upgrade Kit P/N 0006241 and the KF850z NL8 Upgrade Kit P/N 0006242 are available for the
KF850e loudspeaker. These two kits are the same but for the Electrical Assemblies.
Warning: Installation should only be done by an experienced technician. Improper installation may result
in damage to the equipment, injury or death.
1. Inventory the kit against the following bill of materials insuring the kit is complete.
EAW P/N Qt
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4. Removing the Pillow and Wave Guide 4X PHILLIPS HEAD SCREWS PILLOW (REMOVE AND DISCARD) (REMOVE AND DISCARD) The pillow is beneath the HF horn assembly and held to HIGH FREQUENCY the side walls of the enclosure by hook-and-loop tape. HORN ASSEMBLY Tug the sides of the pillow free and lift it out. The waveguide/grille is attached by 4 Phillips head screws. Remove the screws and remove the waveguide. The pillow and waveguide will not be reused. 4X SOCKET HEAD CAP SCREWS WAVE GUIDE (R
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4X 1/4-20 X 4-1/2 LG SOCKET HEAD CAP SCREWS, LOCK WASHERS & M6 FLAT WASHERS 9. Reposition the Enclosure on its face. 10X 1/4-20 X 1 HEX HEAD CAP SCREWS & FLAT WASHERS With the grille still removed, 8X 1/4-20 X 1 HEX HEAD CAP (DO NOT DISCARD HARDWARE) SCREWS & FLAT WASHERS a. Reposition the enclosure front down. (DO NOT DISCARD HARDWARE) LARGE LID b. Remove the 18 hex head screws and flat SMALL LID washers that attach the two lids. 4X 1/4-20 X 1 LG SOCKET 4X 1/4-20 X 1 LG HEAD CAP SCR
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12. Finishing the Kit Installation a. Stand the enclosure upright. b. Connect the red and black leads to the high frequency driver. The black lead to the black terminal. c. Continuity check the low frequency, mid and high frequency drivers. g. Re-attach the two access lids. h. Re-attach the grille. ATTACH RED AND BLACK LEADS FROM NEW CROSSOVER BOARD RE-ATTACH BOTH ACCESS LIDS WITH THE 18 OLD 1/4-20 X 1 LG HEX HEAD CAP SCREWS AND FLAT WASHERS RE-ATTACH GRILLE AND GRILLE FOAM WITH THE 23 SUP
