Read JBL LOFT (serv.man3) Service Manual online
LOW-FREQUENCY
TRANSDUCER
SP050021
BLUE
+
RED
+
YELLOW
+
BLACK
–
BLACK
–
BLACK
–
HIGH-FREQUENCY
TRANSDUCER
08020013
TERMINAL CUP
02170003
CROSSOVER
NETWORK
FP000003
Release Date 2012 Discontinued Date XXXX
Technical Manual
LOFT40
AURAL SWEEP TEST SPECIFICATIONS:
• System aurel-sweep test:
• System aurel-sweep test:
8.0V input 80Hz to 20KHz
• LF aural-sweep test:
6.0v input 90Hz to 4KHz
• HF aural-sweep test:
2.83v input 3KHz to 20KHz
PHYSICAL SPECIFICATIONS:
• Dimensions (W x H x D):
• Dimensions (W x H x D):
10" x 6-1/2" x 7-1/2"
252mm x 156mm x 191mm
• Weight:
5.3 lb (2.4kg) each
WARRANTY:
• Refer to the warranty statement packed with the product.
• Refer to the warranty statement packed with the product.
* The maximum recommended amplifier power rating will
ensure proper system headroom to allow for occasional
peaks. We do not recommend sustained operation at these
peaks. We do not recommend sustained operation at these
maximum power levels.
LOFT40
03/12
ACOUSTIC & ELECTRICAL SPECIFICATIONS
:
• Nominal impedance:
8 ohms
• Power Handling:
10-125 watts
• Frequency response:
55Hz-20KHz (-6dB)
• Sensitivity:
90dB (2.83V/1m)
• Crossover frequencies:
5kHz
SYSTEM COMPONENTS:
• Cabinet:
• Cabinet:
loft40 MX000068
• Grille:
loft40 HH110001
• Low-frequency transducer:
5-1/4" (130mm) SP050021
DC resistance:
5.6 ohms ±10%
• High-frequency transducer: 1" (25mm) 08020013
DC resistance:
DC resistance:
5.6 ohms ±10%
• Crossover network:
FP000003
INPUT
BLUE 300mm
BLACK 300mm
BLACK 70mm
YELLOW 70mm
BLACK 400mm
RED 400mm
HF
LF
L2: 0.4mH
C1: 3.3µF/100V
C2: 6.8µF/100V
L1: 0.15mH
PTC/065A
R1: 4.7 /7W
LOFT40 WIRING DIAGRAM
LOFT40 SCHEMATIC
PACKAGING
1 HH110001
Grille
1
2 70020149
Self-tapping screw
4
3 70020172
Self-tapping screw
8
4 02340006
Trim ring
1
5 SP050021
Woofer
1
6 08020013
Tweeter
1
7 02160019
Port tube
1
8 02360002
Bracket
1
9 70020051
Self-tapping screw
2
10 FP000003
Crossover
1
11 02170003
Terminal cup
1
12 MX000068
Cabinet
1
13 YX000057
JBL LOFT40 speakers
2
14 23040261
EPE bag
2
15 23020058
Top & Bottom styrofoam cover
2
16 23030272
Carton
1
17 03060360
Bumper
8
18 22010156
Manual
1
19 22050002
Dessicant
2
Technical Manual
LOFT40
LOFT40
EXPLODED VIEW
HARMAN International Industries, Incorporated
© 2012 HARMAN International Industries, Incorporated. All rights reserved. JBL is a trademark of HARMAN International Industries, Incorporated, registered
in the United States and/or other countries.
Features, specifications and appearances are subject to change without notice.
Part No. 950-XXXX-001 Rev. A
Part No. 950-XXXX-001 Rev. A
03/12
www.jbl.com
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