Technical Manual
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4428
EXPLODED VIEW
1161315101844428 Cabinet � Not for sale(4)
24(6)
(4)23(6)
20
(2)21
11
19(1)
12
2 19(4)
719(4)
29
5(2)
924(18)
1417(8)382622(3)6(4)25(6)
ITEM ITEM
NO. DESCRIPTIONQTY.PART NO.NO.DESCRIPTIONQTY.PART NO.
1. Horn, HF/UHF, Pntd-44281351489-00119. Screw (T Cup/HF Ntwk/Tie Wrap) 961867
2. Network, HF/UHF, W/L-Pad-44281351410-001#6 X 3/4, OVHDPH
3. Asy, Wfr-1200FE-81339200-00220. Screw (horn/cab) 6 874-33114-20
4. Asy, Tweeter, XDCR-175ND-21339811-00110-32 X 1-1/4, SOC CAP, BLK ZINC, ALLOY
5. PTB, Crdbd, 2.5x4.75, 1/16THK-4425MKII 247909-5521. Screw (horn-frnt to rear) 2 804-41110-20
6. Cup, Grl-Hls/Studio II Ser4333249-00110-32 X 1-1/4, PAN, PH, BLK ZINC, LCS
7. Cup, Term-44281351441-00122. Screw (l-pad/cab) 3 803-11010-32
8. Gskt, Drv, 12"-PMTS1335481-001 8-32 X 2", FLT, PH, CLR ZINC, LCS
9. Network, LF-44281351410-002 23. Bolt (drvr/rear horn) 4 854-03001-12
10. Asy, Twtr-UHF-015M1351265-001 1/4-20 X 3/4, CAP, CLR ZINC, MCS
11. Horn, HF, Rear, Pntd-43481339092-001 24. Washer (horn/cab) #10, Type A, ZINC PL 24 843-00100-05
12. Nameplate-44281351491-001 25. Screw (LF ntwk) 6 883-41110-16
13. Gskt, Horn, Throat, HF-43481339702-001 8-32 X 1, PAN, PH, PB, BLK ZINC, LCS
14. Grl, Frnt, Cab-44281351440-001 26. Level Control (L-Pad) Label1351442-001
15. Gskt, UHF, Chipbd-44281351858-001 27. Outer Carton1351490-001
16. Gskt, Horn-44281351359-001 28. Top-Bottom Pads2351443-001
17. Screw (woofer to enclosure) 8 804-01110-24 29. Shorting Straps (set R-L)1CS06-6
10-32 X 1-1/2, FIL, PH, BLK ZINC, LCS
18. Screw (UHF/horn) 4 802-93056-06
6-32 X 3/8, BTN, HEX, NO FIN, SS
TO SERVICE THE 4428:
Remove the woofer; crossover network(s) and all drivers must be accessed through the woofer opening in the cabinet.
If L-Pad removal is necessary, the three screws for removal are located beneath the Level Control label. If the label
cannot be salvaged after removal, order part# 351442-001.
4428
JBL Consumer Products, 250 Crossways Park Drive, Woodbury, New York 11797
Rev1 9/2003 |