JBL VT4889 Technical Manual
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Technical Manual
JBL VT4889
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Frequency Response:
45 Hz-16 kHz (±3 dB)
• Max Peak Output:
136 dB to 146 dB @ 1M
(Frequency/Bandpass Dependent)
• Recommended Signal
Digital System Controller:
Processing:
dbx 480, BSS 366, XTA 226 Supported
• Horiz Coverage Angle:
90 deg Nominal,
250 Hz-16 kHz (-6 dB)
• Vert Coverage Angle:
Varies With Array Size and
Configuration
SYSTEMS COMPONENTS:
• Cabinet:
Enclosure Assembly C4889
• Grille:
Grille, Left (337763-002)
Grille, Right (337763-001)
• Low Frequency
(2) x 2255HPL, 380 mm (15 in.)
Transducer:
76 mm (3 in.) Dual Coil Differential
Transducer, Direct Cooled
• Nominal Impedance:
8 ohms
(Each Driver)
• Input Power Rating:
System Bandpass (600 W per Driver)
(Per Driver)
• Bandpass Sensitivity:
99 dB, *SPL (System Bandpass)
DC Resistance:
5.0 ohm ±10%
• Mid Range
(4) x 2250HPL, 203 mm (8 in.)
Transducer:
76 mm (3 in.) Dual Coil Differential
Transducer, Direct Cooled
• Nominal Impedance:
8 ohms, Wired Series Parallel
(Driver, Bandpass)
PACKAGE
Specification Sheet
337845-001
JBL Incorporated, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A.
Soft Cover
229-00024-00
Carton VT4889
990-00224-00
Filler, Top and Bottom (2)
364680-001
Filler, Bottom (2)
991-00239-00
Microfoam Packaging (8)
49790P
SYSTEM COMPONENTS:
(CONT'D)
• Input Power Rating:
System Bandpass (300 W Per Driver)
(Bandpass, Driver)
• Bandpass Sensitivity:
102 dB, 1 Watt @ 1 Meter SPL
(System Bandpass)
• DC Resistance:
5.2 ohm ±10%
• High Frequency
(3) x 2435 HPL, 76 mm (3 in.)
Transducer:
Beryllium Diaph Voice Coil,
38 mm (1.5 in.) Throat Diameter
• Nominal Impedance:
16 ohm, Wired in Series
(Bandpass)
• Input Power Rating:
System Bandpass (75 W Per Driver)
(System Bandpass)
• Bandpass Sensitivty:
116 dB, *SPL (System Bandpass)
• DC Resistance:
4.0 ohm ±10%
• Input Panel:
NL8MPR (2 Each)
Panel P/N 338647-001
AURAL SWEEP TEST SPECIFICATIONS:
A. LF. Aural Sweep Test:
10.0V Input, 20 Hz to 200 Hz
B. MF. Aural Sweep Test:
7.0V Input, 20 Hz to 1 kHz
C. HF. Aural Sweep Test:
0.75V Input, 1 kHz to 16 kHz
PHYSICAL SPECIFICATIONS:
• Enclosure Dimensions:
489 mm x 1213 mm x 546 mm D
(19.25 x 47.75 x 21.0 in. D)
• Net Weight:
159 lbs. (72 kg)
Incl. rigging frames and hinge bars
WARRANTY INFORMATION:
• Refer to Warranty Statement packed with each product.
JBL VT4889-AF
JBL VT4889-SF
Carton
Carton
990-00233-00
990-00232-00
Filler (2)
Filler (2)
337616-001
991-00258-00
Specification Sheet
Specification Sheet
336890-001
336890-001
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
07-09
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Summary of Contents for JBL VT4889
- Page 1 JBL Incorporated, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A. Technical Manual JBL VT4889 SPECIFICATIONS SYSTEM COMPONENTS: ACOUSTIC & ELECTRICAL SPECIFICATIONS: (CONT’D) • Frequency Response: 45 Hz-16 kHz (±3 dB) • Input Power Rating: System Bandpass (300 W Per Driver) (Bandpass, Driver) •...
- Page 2 JBL VT4889 WIRING DIAGRAM Compression Driver, High Freq. 2435 HPL (3) Diaph Repl D8R2435 NO. 3 NO. 2 NO. 1 YEL/BLK YEL/BLK YEL/BLK NO. 1 GRN/BL 1± LF, RIGHT NO. 2 2± LF, LEFT GRN/BLK 3± MF 4± HF BL/WHT...
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Page 3: Schematic Diagrams
JBL VT4889 SCHEMATIC DIAGRAMS Connector Assembly 350971-001 Wire Assembly 350994-001... - Page 4 JBL VT4889 Horn, Waveformer (2) Input Connector Assembly Washer (12) Connector Assembly Bolt (12) Nut (8) 337055-001 352052-003 844-01110-07 854-00003-08 350971-001 801-30000-00 1/4 ,SAE,REG. 1/4-20 x 1/2 6-32, K Lock Gasket, Input Plate BLK,ZINC,LCS Screw (12) ZINC, LCS Input Label...
- Page 5 JBL VT4889 Doly Platform Nut (10) 924-00028-00 833-36100-00 10-32 NYLON, CLR ZINC Screw (16) 706-13000-20 LCS, RIGHT 5/16-18 X 1-1/4 LG FLT HD SCKT SEE DETAIL A Caster Plate (4) 909-00052-00 Caster Wheel 3” (4) Dolly Lock Housing 924-00005-00 Assembly (2)
- Page 6 JBL VT4889 REV B DOLLY ASSEMBLY 229-00029-02 Dolly Platform 351894-003 Screws (16) 807-13000-20 5/16-18 x 1 1/4 FLT, HEX,CLR ZINC, Insert (10) 350015-003 8-32 x 0.4 T NUT (2) 21749 Caster Plate (4) CP, 8-32 x 1/4 909-00052-01 Caster Wheels (4)
- Page 7 3/8 x .08 VT4889-AF (Array Frame) Bolt (16) FLTPL,EX DT, BLK ZINC, CS 856-00013-44 The VT4889-AF array suspension frame 3/8-16 X 2 3/4 is crafted of 6061 Grade heat-treated HEX,CAP,BLK ZINC,MCA aluminum. It includes 11 (eleven) Hinge Block, Rear (2) attachment holes for fitting 6.5-ton...
- Page 8 VT4889-SF (Short Frame) Label, Array Frame DETAIL A 955-00154-00 Pin,Ball Locking Assembly (4) Like the larger VT4889-AF, the Short 361345-001 Frame is crafted of 6061 Grade heat- 4 in treated aluminum. It includes 6 (six) attachment holes. Each hole is fitted Short Frame with a bronze bushing for longer life.
- Page 9 JBL VT4889-ASP/MSP/RIG COMPONENT PARTS LIST Acoustical Spare Parts, VT4889-ASP ITEM PART NO. DESCRIPTION 2255HPL 1 S/M 2255HPL 2250HPL 2 S/M 2255HPL D8R2435 1 S/M Diaphragm Repl. 2435 336890-001 1 SPECIFICATION SHEET VT4889 990-00160-00 1 CARTON Mechanical Spare Parts, VT4889-MSP 364596-001...