JBL GT1241D Manual de instrucciones
SPECIFICATIONS
DIAMETER: 12" (304.8 MM)
SENSITIVITY (2.83 V @ 1 M): 93 dB
POWER HANDLING: 300 WRMS
FREQUENCY RESPONSE: 18 ~ 500 HZ
NOMINAL IMPEDANCE:4OHMS (PER COIL)
VOICE-COIL DIAMETER: 2.0" (50.7 MM)
DIMENSIONS:
THIELE-SMALL PARAMETERS*
VOICE COIL DCRESISTANCE:R
EVC (OHMS) . . . . . . 1.92
VOICE COIL INDUCTANCE @ 1 KHZ:L
EVC (MH) . . . . . . . 1.33
DRIVER RADIATING AREA:S
D(IN2) . . . . . . . . 82.46
SD(CM2) . . . . . . 532.00
MOTOR FORCE FACTOR:BL(TM) . . . . . . . . . 9.09
COMPLIANCE VOLUME:V
AS (FT3) . . . . . . . . 5.17
VAS (LITERS) . . . . 146.33
SUSPENSION COMPLIANCE:C
MS (µM/N) . . . . 354.09
MOVING MASS, AIR LOAD:M
MS (GRAMS). . . . 143.74
MOVING MASS, DIAPHRAGM:M
MD (GRAMS) . . . 136.69
FREE-AIR RESONANCE:F
S(HZ) . . . . . . . . 22.00
MECHANICAL Q: QMS . . . . . . . . . . . 8.35
ELECTRICAL Q: QES . . . . . . . . . . . . 0.46
TOTAL Q: QTS . . . . . . . . . . . . 0.44
MAGNETIC-GAP HEIGHT:H
AG (IN) . . . . . . . . . 0.31
HAG (MM) . . . . . . . . 7.92
VOICE-COIL HEIGHT:H
VC (IN) . . . . . . . . . 1.25
HVC (MM) . . . . . . . 31.75
MAXIMUM EXCURSION:X
MAX (IN) . . . . . . . .0.47
XMAX (MM) . . . . . . 11.91
*VOICE COILS CONNECTED IN PARALLEL
SEALED BOX VOLUME
(INCLUDES DRIVER DISPLACEMENT)
SEALED
FREQUENCY RESPONSE @ 2.83 V
SEALED
EXCURSION/GROUP DELAY @ 300 W
Harman Consumer Group • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com
GT1241D 12" Woofer – Technical Data
mounting depth
6.00" (152.00 mm)
cutout diameter
11.125" (283.00 mm)
outer diameter
12.00" (304.80 mm)
VBOX = 1.25 ft3 (35.40 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
GT1241D
(side view)
C
dB
100
95
90
85
80
75
70
65
60
20 Frequency 50 100 Hz 200 500 1k 2k
Out-Of-Car
In-Car
12 dB LP @ 80 Hz
C
Xd mM
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0
T mSec 10.0
7.5
5.0
2.5
0.0
-2.5
-5.0
-7.5
-10.0
20 Frequency 50 100 Hz 200 500 1k 2k
Transducer Excursion
Group Delay
VENTED BOX VOLUME (INCLUDES
(INCLUDES DRIVER/PORT DISPLACEMENTS)
VENTED
FREQUENCY RESPONSE @ 2.83 V
VENTED
EXCURSION/GROUP DELAY @ 300 W
SEALED BANDPASS BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
SEALED BANDPASS
EXCURSION/GROUP DELAY @ 300 W
Harman Consumer Group • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com
GT1241D 12" Woofer – Technical Data
GT1241D
(side view)
Port
fo= 35.0 Hz
diameter = 4"
length = 8.00"
VBOX = 2.00 ft3 (56.64 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
C
dB
105
100
95
90
85
80
75
70
65
20 Frequency 50 100 Hz 200 500 1k 2k
Out-Of-Car
In-Car
12 dB LP @ 80 Hz
C
Xd mM
40
35
30
25
20
15
10
5
0
T mSec 20
15
10
5
0
-5
-10
-15
-20
20 Frequency 50 100 Hz 200 500 1k 2k
Transducer Excursion
Group Delay
VREAR =
2.50 ft3 (70.80 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
VFRONT =
1.25 ft3
(35.40 liters)
GT1241D
(side view)
diam. = 4"
(2)Ports
fo= 55.0 Hz
length =
11.00"
C
dB
105
100
95
90
85
80
75
70
65
20 Frequency 50 100 Hz 200 500 1k 2k
Out-Of-Car
In-Car
12 dB LP @ 60 Hz
C
Xd mM
40
35
30
25
20
15
10
5
0
T mSec 20
15
10
5
0
-5
-10
-15
-20
20 Frequency 50 100 Hz 200 500 1k 2k
Transducer Excursion
Group Delay
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