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Technical Manual
JBL VT4888

SPECIFICATIONS

ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Frequency Response:
60 Hz- 16 kHz (±3 dB)
• Max Peak Output:
136 dB to 146 dB @ 1M
(Frequency/Bandpass Dependent)
• Recommended Signal
Digital System Processing: dbx 480,
BSS 366, XTA 226
• Horiz Coverage Angle:
90°, 250 Hz - 16 kHz (-6dB)
• Vert Coverage Angle:
Varies with size and configuration(-6dB)
• Crossover Frequency:
315 Hz LF/Mid
1.2 kHz MF/HF
SYSTEMS COMPONENTS:
• Cabinet:
Enclosure Assembly C4888
• Grille:
Left (350780-002), Right (350780-001)
• Low Frequency
(2) 2262H, 304 mm (12") dia., 76 mm (3")
Transducer:
Dual Coil Differential Drive
• Nominal Impedance:
8 ohms (Per Driver)
• Input Power Rating:
2000W (8000W peak) 2 hrs.
1400W (5600W peak) 100 hrs.
• Bandpass Sensitivity:
98 dB,1W @ 1m (3.3 ft.)
DC Resistance:
5.1 Ohms
• Mid Frequency
(4) 2106HPL, 50 mm (2") dia. Voice Coil
Transducer:
• Nominal Impedance:
8 Ohms (Per Driver)
• Input Power Rating:
600W (2400W peak) 100 hrs.
400W (1600W peak) 100 hrs.
• Bandpass Sensitivity:
102 dB,1W @ 1m (3.3 ft.)
• DC Resistance:
4.3 Ohms
PACKAGE
Filler (1)
35862-001
Microfoam (4)
49790P
Carton
351861-001
Fiberglass (13)
22389P
Chip FBRBRD
(38)
300982-001
Warranty 59660
Specification Sheet
350620-001
JBL Incorporated, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A.
SYSTEMS COMPONENTS (Cont):
• High Frequency
Transducer:
• Nominal Impedance:
• Input Power Rating:
• Bandpass Sensitivity:
• DC Resistance:
AURAL SWEEP TEST SPECIFICATIONS:
A. System Aural Sweep Test (thru processor measured as amp output):
6V, 40 Hz to 20 kHz
B. LF Woofer Aural Sweep Test: 6V, 40 Hz to 1 kHz
C. MF Woofer Aural Sweep Test: 3V, 400 Hz to 4 kHz
D. HF Driver Aural Sweep Test: 1.5V, 800 Hz to 20 kHz
PHYSICAL SPECIFICATIONS:
• Enclosure Dimensions:
• Shipping Weight:
VT4888
VT4888-ACC
WARRANTY INFORMATION:
• Refer to Warranty Statement packed with each product.
(2) 2431H, 76 mm (3") dia. Aluminium
Diaphragm, 38mm (1.") Throat Dia.
8 ohms (Per Driver)
150W (600W peak) 100 hrs.
114 dB,1W @ 1m (3.3 ft.)
4.0 Ohms
355.6 mm x 990.6 mm x 508 mm D
(14 x 39 x 20 in. D)
130 lbs. (59 kg)
30 lbs. (13.6 kg)
Dolly Assembly
350519-002
Carton
350521-001
Filler,Bottom (2)
350522-001
Filler, Top (2)
351401-001
Soft Cover
350520-001
JBL VT4888-AF
JBL VT4888-SF
Carton
Carton
350484-001
350706-001
Filler (2)
Filler (2)
350486-001
350713-001
Owner's Manual
Owner's Manual
350485-001
350485-001
910-00035-01 (1)
Ferro fluid vial w/
blotter paper and
instruction sheet
910-00035-02 (12)
Ferro fluid vials w/
blotter paper and
instruction sheet
03-12

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Summary of Contents for JBL VT4888

  • Page 1: Specifications

    JBL Incorporated, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A. Technical Manual JBL VT4888 SPECIFICATIONS ACOUSTIC & ELECTRICAL SPECIFICATIONS: SYSTEMS COMPONENTS (Cont): • High Frequency (2) 2431H, 76 mm (3”) dia. Aluminium • Frequency Response: 60 Hz- 16 kHz (±3 dB) Transducer: Diaphragm, 38mm (1.”) Throat Dia.
  • Page 2: Wiring Diagram

    JBL VT4888 WIRING DIAGRAM No. 1 No. 2 Driver, High Freq (2) 2431H (339894-002X) Diaph Repl D8R2431 YELLOW/BLACK YELLOW YELLOW WHITE No. 1 WHITE Input Connector WHITE/BLACK No. 2 Assembly 443294-001 WHITE No. 3 WHITE WHITE/BLACK No. 4 BLACK GREEN...
  • Page 3: Schematic Diagrams

    JBL VT4888 SCHEMATIC DIAGRAMS Wire Harness Assembly P/N 350989 28” RED 28” BLACK 28” GREEN 28” GREE/BLK 24” WHITE 12” WHITE 24” WHITE/BLK 24” WHITE 12” WHITE 24” WHITE/BLK 12” YELLOW/BLK 12” YELLOW 12” YELLOW Connector Assembly P/N 350988 4–...
  • Page 4 JBL VT4888 COMPONENT EXPLODED VIEW Washer, Amp Mount (8) 351905-002 Enclosure Assy 7/8” C4888 (Drive Pack Attachment (available to VerTec only) Dealers and Service Centers) Screw (8) 806-42010-16 HF Center Horn 1/4-20 x 1 Gasket PAN,TORX,BLK ZINC, 359-00225-00 Bolt, (8)
  • Page 5 JBL VT4888-ACC DOLLY ASSEMBLY Screws (8) 804-11100-16 Screws (16) 10-32 x 1 807-13000-20 FLT, CLR, ZINC, 5/16-18 x 1-1/4 HEX, CLR, ZINC,LC Washer (8) Dolly Platform 843-00100-00 351896-002 Flat, Fender Nut (8) 833-36100-00 10-32 Nylon, CLR, ZINC, Housing Dolly Lock Pin (2)
  • Page 6 JBL VT4888-ACC REV B DOLLY ASSEMBLY 350519-002 Dolly Platform Screws (16) 351896-003 807-13000-20 5/16-18 x 1 1/4 FLT, HEX,CLR ZINC, LC Insert (10) 8161207-001 8-32 x 4MM HXS, KNIFE32608C10ZC T NUT (2) 21749 CP, 8-32 x 1/4 Caster Plate (4)
  • Page 7 JBL VT4888-SF ARRAY FRAME ASSEMBLY Pin,Ball Locking Assembly (4) 361345-001 4 in. Frame Array 350648-001 JBL Label Front Hinge Block (4) 955-00154-00 339896-004 Bolt (16) 856-00013-40 3/8-16 x 1/2 HEX,CAP,BLK Screws (4) ZINC,MCA 804-31110-08 10-32 x 1/2 TRUSS, PH, BLK,...
  • Page 8 JBL VT4888-AF ARRAY FRAME ASSEMBLY Pin, Ball Locking Asembly (4) 361345-001 4 in. Washer (32) 846-00410-08 Screws (4) 3/8 x .08 804-31110-08 FLTPL, EX DT, 10-32 x 1/2 BLK ZINC, CS TRUSS, PH, BLK, ZINC, LCS Nut (16) 836-36113-00 3/8-16 Nylon Lock,...

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