JBL SR4718X Technical Manual

JBL Incorporated, 8500 Balboa Boulevard, P.O.Box 2200, Northridge, California 91329 U.S.A.

JBL SR4718X REV Q

PACKAGE

WIRING DIAGRAM

04-08

Technical Manual

JBL SR4718X

SPECIFICATIONS

ACOUSTIC & ELECTRICAL SPECIFICATIONS:

• Nominal Impedance: 4 ohm

• Power Capacity: 600W Continuous Pink Noise

• Frequency Range: 30 Hz – 1.1 kHz (–10 dB)

• Sensitivity: 95 dB SPL, 1 Watt @1 Meter

• Crossover Frequency: N/A

SYSTEM COMPONENTS:

• Cabinet: SR4718X (Not For Sale)

• Grille: 128-00415-00

• Low Frequency 460mm (18 in.) Paper Cone
Transducer: Transducer (2241GPL)

• DC Resistance: 2.5 ohm ±10% Aluminum Wire

• Crossover Network: 129-00023-00

AURAL SWEEP TEST SPECIFICATIONS:

A. System Aural Sweep Test: 7.0V Input, 20 Hz to 1.2 kHz
B. L.F. Aural Sweep Test: 10.0V Input, 20 Hz to 1.2 kHz

PHYSICAL SPECIFICATIONS:

• Enclosure Dimensions: 610mm x 635mm x 460mm D
(24.0 x 25.0 x 18.1 in. D)

• Weight: 108 lbs. (48.9 kg.)

WARRANTY INFORMATION:

• Refer to Warranty Statement packed with each product.

Warranty 59660
User’s Guide
SR-X Series
981-00052-04

Carton
SR4718X
990-00176-00

Microfoam (8)
Packaging
49790P

Filler (4)
Top & Bottom
991-00202-00

Network
129-00023-00

SCHEMATIC (129-00023-00)

Speaker, Low Freq
2241GPL (71126­03X)
Cone Repl
C4R2241

GRN

GRN/BLK

PC BOARD

Neutrik

Connector

NL4MPR

Neutrik

Connector

NL4MPR

GRN/BLK

GRN

RED

YEL

1
4

1
4

C

D

1
4

IN/OUT

Housing

+2/–2

Mode

+1/–1

Mode

IN/OUT

L.F.
2241G

+1
–1

+

–

+

2

–2

+1
–1

+2
–2

–+

JBL SR4718X

JBL SR4718X

COMPONENT EXPLODED VIEW

Screw (5)
729-90004-24
No.12 x 1-1/2
PNHD BLK

Screw (10)
882-51110-12
6 x 3/4
OV PH

Grille T rim (2)
382-00336-04

Screw (8)
804-01110-16
10-32 x 1
FIL PH BLK
ZINC

Gasket
60578

Gasket
359-00215-00

Bracket
888-00066-00

Plug
382-00357-00

Screw (4)
729-90002-16
No.12 x 1

Port Tube (2)
47909-29
(Not For Sale)

Screw (8)
804-41110-16
10-32 x 1
PNHD BLK

Screw (12)
884-41110-12
No.10 x 3/4
PNHD PH PB THD

Speaker,
Low Freq
2241GPL
(71126-03X)
Cone Repl
C4R2241

Screw (6)
882-51110-12
6 x 3/4
OV PH

Network
129-00023-00

Foot (5)
924-00012-00

T-Nut (8)
61861
No.10-32

T-Nut (8)
61861
No.10-32

Grille
Support (2)
389-00030-00

Grille
128-00415-00

Name Plate
950-00037-00

Cabinet
SR4718X
(Not For Sale)

Stiffner, Tube
381-00039-00
End Cap,
Stiffner Tube (2)
390-00011-01

Gasket,
Handle (2)
382-00337-00

Handle (2)
923-00022-00

NOTE: DURAFLEX REPAIR
Kit 30052

Input Terminal
362-10007-01

Tinsel Leads (2)
352828-001