DOWNLOAD JBL LOFT (serv.man4) Service Manual ↓ Size: 724.24 KB | Pages: 2 in PDF or view online for FREE

Model
LOFT (serv.man4)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
724.24 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
loft-sm4.pdf
Date

JBL LOFT (serv.man4) Service Manual ▷ View online

LOW-FREQUENCY
TRANSDUCER
SP650007
BLUE 
+
GREEN 
+
RED 
+
BLUE 
+
YELLOW 
+
BLACK 
BLACK 
BLACK 
BLACK 
GREEN 
+
GREEN 
+
BLACK 
BLACK 
BLACK 
MIDRANGE
TRANSDUCER
SP040011
HIGH-FREQUENCY
TRANSDUCER
08020014
MIDRANGE
TRANSDUCER
SP040011
MIDRANGE
TRANSDUCER
SP040011
LOW-FREQUENCY
TRANSDUCER
SP650007
TERMINAL CUP
02120003
CROSSOVER
NETWORK
FP000004
Release Date 2012      Discontinued Date XXXX
Technical Manual
LOFT50
AURAL SWEEP TEST SPECIFICATIONS:
• System aurel-sweep test: 
10.0V  input 60Hz to 20kHz
• LF aural-sweep test: 
8.0v  input 70Hz to 500Hz
• MF aural-sweep test: 
5.0v input 350kHz to 3kHz
• HF aural-sweep test: 
2.83v input 3Kkz to 20kHz
 
 
PHYSICAL SPECIFICATIONS:
• Dimensions (W x H x D): 
42-1/2" x 7-1/8" x 11-7/8"
   
 
1078mm x 180mm x 300mm
• Weight: 
 
27.5 lb (12.5kg) 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.
LOFT50
03/12
ACOUSTIC & ELECTRICAL SPECIFICATIONS
:
• Nominal impedance: 
8 ohms
• Power Handling: 
10-250 watts
• Frequency response: 
37Hz-20kHz (-6dB)
• Sensitivity:   
91dB (2.83V/1m)
• Crossover frequencies: 
320Hz, 3.2kHz
SYSTEM COMPONENTS:
• Cabinet: 
 
loft50 MX000070
• Front Grille:  
loft50 HH110004
• Side Grille:   
loft50 HH110005
• Base: 
 
loft50 HH120001
• Low-frequency transducer: 
6-1/2" (165mm) SP650007
   DC resistance: 
10.6 ohms ±10%
• Mid-frequency transducer: 
4" (100mm) SP040011
   DC resistance: 
16 ohms ±10%
• High-frequency transducer:  1" (25mm) 08020014
   DC resistance: 
5.6 ohms ±10%
• Crossover network: 
FP000004
INPUT
LF2
BLUE 400mm
BLUE 400mm
BLACK 400mm
BLACK 400mm
BLACK 450mm
YELLOW 450mm
BLACK 700mm
BLACK 800mm
BLACK 900mm
BLACK 1050mm
LF1
MF2
MF3
MF1
LF2
GREEN 800mm
GREEN 1050mm
RED 900mm
MF2
GREEN 700mm
MF3
MF1
HF
LF1
L1: 3.6mH
L3: 1.15mH
C1: 47µf/100V
C2: 6.8µf/100V
C3: 3.9µF/100V
L4: 0.15mH
L2: 2.5mH
PTC/065A
R1: 3.3   /7W
LOFT50 WIRING DIAGRAM
LOFT50 SCHEMATIC
PACKAGING
 
 
 
1  HH110004 
Front grille 
1
 
2  70020149 
Self-tapping screw 
20
 
3  02340005 
Trim ring 
3
 
4  SP040011 
Midrange 
3
 
5  MX000070 
Cabinet 
1
 
6  08020014 
Tweeter 
1
 
7  HH110005 
Side grille 
2
 
8  02160013 
Port tube 
2
 
9  SP650007 
Woofer 
2
  10  02340007 
Trim ring 
2
  11  FP000004 
Crossover 
1
  12  70020092 
Self-tapping screw 
4
  13  02170003 
Terminal cup  
1
  14  70020172 
Self-tapping screw 
8
 
  15  HH120001 
Base 
  16  07010207 
M.screw 
4
  17  YX000058 
JBL LOFT50 left speaker 
1
  18  YX000058 
JBL LOFT50 right speaker 
1
  19  23020059 
Top styroform cover 
1
  20  23040258 
Middle EPE cover 
2
  21  23020060 
Bottom styroform cover 
2
  22  23040262 
EPE bag 
2
  23  23030273 
Carton 
1
  24  22010156 
Owner’s manual 
1
  25  20620001 
Bumper 
4
  26  22050002 
Dessicant 
4
 
Technical Manual
LOFT50
LOFT50
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.
   ITEM   
   NO.  PART NO. 
DESCRIPTION 
QTY.
Display

JBL LOFT (serv.man4) Service Manual ▷ Download

  • DOWNLOAD JBL LOFT (serv.man4) Service Manual ↓ Size: 724.24 KB | Pages: 2 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the JBL LOFT (serv.man4) in PDF for free, which will help you to disassemble, recover, fix and repair JBL LOFT (serv.man4) Audio. Information contained in JBL LOFT (serv.man4) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.