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
