Technical Manual
S312
Studio Series
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Nominal Impedance
8 ohms
• Max Amp Power
250 watts
• Frequency Response
35 Hz - 20 kHz
• Sensitivity
92 dB (1 watt @ 1 meter)
• Crossover Frequency
750 Hz, 3000 Hz
SYSTEM COMPONENTS:
• Enclosure
S312 (Not for sale)
• Grille
335147-002
• Low Frequency Transducer
12
”
PolyPlas
™
Shielded
(335151-001)
DC Resistance
5.6 ohms ±10%
• Mid Frequency Transducer
4” PolyPlas
™
Shielded
(335439-001)
DC Resistance
4.3 ohms ±10%
• High Frequency Transducer 1” (25mm) Titanium dome
Shielded (335663-001)
DC Resistance
3.4 ohms ±10%
• Crossover Network
335412-001
AURAL SWEEP TEST SPECIFICATIONS:
• A. System Aural Sweep Test 6.0V Input 30 Hz to 20 kHz
• B. L.F. Aural Sweep Test
6.0V Input 30 Hz to 1 kHz
• C. M.F. Aural Sweep Test
4.0V Input 500 Hz to 4 kHz
• D. H.F. Aural Sweep Test
2.83V Input 3 kHz to 20 kHz
PHYSICAL SPECIFICATIONS:
• Enclosure dimensions:
41” x 16” x 12
⁷⁄₈
” (H x W x D)
1041mm x 406mm x 327mm
• Weight
68 lbs. /31kg Each
WARRANTY:
• Refer to Warranty Statement packed with each product.
Owner's Manual
335404-001
Warranty Card
331994-001
Survey Card
331384-001
OWNER'S
MANUAL
Upper/Lower
Foam
335408-001
Microfoam
(2pcs.)
Outer Carton
335403-001
PACKAGING
02/00
JBL Consumer Products, Inc. 250 Crossways Park Dr., Woodbury, New York 11797
S312
Studio Series
Driver
High Frequency
335663-001
Driver
Mid.Frequency
335439-001
Driver
Low Frequency
335151-001
YELLOW/BLACK
WHITE/BLACK
GREEN/BLACK
WHITE
GREEN
YELLOW
Crossover Network
335412-001
– +
+IN
–IN
INPUT
GREEN
BLK/GREEN
WHT/BLACK
WHITE
YELLOW
YEL/BLK
RED
BLACK
L.F.
M.F.
+
H.F.
250
+
+
205
205
–
110
–
205
–
110
L1
3.5mH
R1
2.4/10W
C1
50
µ
F
100V
C2
0.01
µ
F
250V
R3
40/5W
R2
1.2/10W
R4
0.62/10W
L2
400
µ
H
C3
20
µ
F/100V
C4
0.01
µ
F/250V
C5
6
µ
F/100V
R5
10/5W
L3
220
µ
H
C6
0.01/250V
S312 SCHEMATIC
WIRING DIAGRAM
