JBL GT1200 Technical Data
SPECIFICATIONS
D
IAMETER
:
12" (304.8
MM
)
S
ENSITIVITY
(2.83 V @ 1
M
):
95 dB
P
OWER
H
ANDLING
:
280 W
RMS
F
REQUENCY
R
ESPONSE
:
25 ~ 3,000 H
Z
N
OMINAL
I
MPEDANCE
:
4
OHMS
V
OICE
-C
OIL
D
IAMETER
:
2.0" (50.7
MM
)
D
IMENSIONS
:
THIELE-SMALL PARAMETERS
V
OICE
C
OIL
D
C
R
ESISTANCE
:
R
EVC
(
OHMS
) . . . . . . 3.17
V
OICE
C
OIL
I
NDUCTANCE
@ 1
K
H
Z
: L
EVC
(
M
H). . . . . . . . 2.16
D
RIVER
R
ADIATING
A
REA
:
S
D
(
IN
2
) . . . . . . . . 82.10
S
D
(
CM
2
). . . . . . . 532.00
M
OTOR
F
ORCE
F
ACTOR
:
B
L
(T
M
) . . . . . . . . 12.82
C
OMPLIANCE
V
OLUME
:
V
AS
(
FT
3
). . . . . . . . . 6.60
V
AS
(
LITERS
). . . . . 155.73
S
USPENSION
C
OMPLIANCE
:
C
MS
(µ
M
/N) . . . . 387.48
M
OVING
M
ASS
, A
IR
L
OAD
:
M
MS
(
GRAMS
) . . . . 105.69
M
OVING
M
ASS
, D
IAPHRAGM
:
M
MD
(
GRAMS
). . . . . 98.64
F
REE
-A
IR
R
ESONANCE
:
F
S
(H
Z
) . . . . . . . . 24.80
M
ECHANICAL
Q:
Q
MS
. . . . . . . . . . . 11.76
E
LECTRICAL
Q:
Q
ES
. . . . . . . . . . . . 0.32
T
OTAL
Q:
Q
TS
. . . . . . . . . . . . 0.31
M
AGNETIC
-G
AP
H
EIGHT
:
H
AG
(
IN
) . . . . . . . . . 0.31
H
AG
(
MM
) . . . . . . . . 7.92
V
OICE
-C
OIL
H
EIGHT
:
H
VC
(
IN
) . . . . . . . . . 0.88
H
VC
(
MM
) . . . . . . . 22.23
M
AXIMUM
E
XCURSION
:
X
MAX
(
IN
) . . . . . . . . .0.28
X
MAX
(
MM
). . . . . . . . 7.15
IMPEDANCE CURVE
INFINITE BAFFLE
FREQUENCY RESPONSE @ 2.83 V
INFINITE BAFFLE
EXCURSION/GROUP DELAY @ 75 W
GT1200 12" Woofer – Technical Data
7•20 . . . . . JBL Technical Data
Ohms
100.0
1.0
3.0
10.0
30.0
20 Frequency 50 100 Hz 200 500 1k 2k
C
dB
105
100
95
90
85
80
75
70
65
20 Frequency 50 100 Hz 200 500 1k 2 k
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 2 k
Transducer Excursion
Group Delay
mounting depth
5.75" (146.05 mm)
cutout diameter
11.13" (283.00 mm)
outer diameter
12.18" (309.44 mm)