JBL LOFT50 Technical Manual

Technical Manual
LOFT50
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Nominal impedance:
• Power Handling:
• Frequency response:
• Sensitivity:
• Crossover frequencies:
SYSTEM COMPONENTS:
• Cabinet:
• Front Grille:
• Side Grille:
• Base:
• Low-frequency transducer:
DC resistance:
• Mid-frequency transducer:
DC resistance:
• High-frequency transducer:
DC resistance:
• Crossover network:
PACKAGING
8 ohms
10-250 watts
37Hz-20kHz (-6dB)
91dB (2.83V/1m)
320Hz, 3.2kHz
loft50 MX000070
loft50 HH110004
loft50 HH110005
loft50 HH120001
6-1/2" (165mm) SP650007
10.6 ohms ±10%
4" (100mm) SP040011
16 ohms ±10%
1" (25mm) 08020014
5.6 ohms ±10%
FP000004
Release Date 2012
AURAL SWEEP TEST SPECIFICATIONS:
• System aurel-sweep test:
• LF aural-sweep test:
• MF aural-sweep test:
• HF aural-sweep test:
PHYSICAL SPECIFICATIONS:
• Dimensions (W x H x D):
• Weight:
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 WIRING DIAGRAM
MIDRANGE
TRANSDUCER
SP040011
+
GREEN
–
BLACK
GREEN
CROSSOVER
NETWORK
FP000004
+ –
YELLOW BLACK
TERMINAL CUP
02120003
LOFT50 SCHEMATIC
R1: 3.3 /7W PTC/065A
C1: 47µf/100V L3: 1.15mH
BLACK 450mm
INPUT
L1: 3.6mH
YELLOW 450mm
Discontinued Date XXXX
10.0V input 60Hz to 20kHz
8.0v input 70Hz to 500Hz
5.0v input 350kHz to 3kHz
2.83v input 3Kkz to 20kHz
42-1/2" x 7-1/8" x 11-7/8"
1078mm x 180mm x 300mm
27.5 lb (12.5kg) each
+
HIGH-FREQUENCY
RED
TRANSDUCER
08020014
–
BLACK
MIDRANGE MIDRANGE
TRANSDUCER TRANSDUCER
SP040011 SP040011
+ –
BLACK
+ –
GREEN BLACK
+
BLUE
LOW-FREQUENCY
TRANSDUCER
–
BLACK SP650007
+
BLUE
LOW-FREQUENCY
TRANSDUCER
–
BLACK SP650007
RED 900mm
L4: 0.15mH
C3: 3.9µF/100V
BLACK 900mm
GREEN 1050mm
MF1
GREEN 800mm
MF2
GREEN 700mm
MF3
L2: 2.5mH C2: 6.8µf/100V
BLACK 1050mm
MF1
BLACK 800mm
MF2
BLACK 700mm
MF3
BLACK 400mm
LF1
BLACK 400mm
LF2
BLUE 400mm
LF1
BLUE 400mm
LF2
HF
03/12