LOFT (serv.man3) - JBL Audio Service Manual (repair manual)

loft (serv.man3) service manual
Model
LOFT (serv.man3)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
616.78 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
loft-sm3.pdf
Date

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: 
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): 
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.
*  The maximum recommended amplifier power rating will  
ensure proper system headroom to allow for occasional  
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: 
 
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: 
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 
  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
03/12
www.jbl.com
   ITEM   
    NO.  PART NO. 
DESCRIPTION 
QTY.
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DESCRIPTION 
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Here you can read online and download JBL LOFT (serv.man3) Service Manual in PDF. LOFT (serv.man3) service manual will guide through the process and help you recover, restore, fix, disassemble and repair JBL LOFT (serv.man3) Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.