SPECIFICATIONS
D
IAMETER
:
12" (304.8
MM
)
S
ENSITIVITY
(2.83 V @ 1
M
):
91 dB
P
OWER
H
ANDLING
:
400 W
RMS
(1,600 W
PEAK
)
F
REQUENCY
R
ESPONSE
:
20 ~ 450 H
Z
N
OMINAL
I
MPEDANCE
:
2
OHMS
V
OICE
-C
OIL
D
IAMETER
:
3.0" (76.2
MM
)
D
IMENSIONS
:
THIELE-SMALL PARAMETERS
V
OICE
C
OIL
D
C
R
ESISTANCE
:
R
EVC
(
OHMS
) . . . . . . 1.95
V
OICE
C
OIL
I
NDUCTANCE
@ 1
K
H
Z
: L
EVC
(
M
H) . . . . . . . 0.99
D
RIVER
R
ADIATING
A
REA
:
S
D
(
IN
2
) . . . . . . . . 74.71
S
D
(
CM
2
) . . . . . . 482.00
M
OTOR
F
ORCE
F
ACTOR
:
B
L
(T
M
) . . . . . . . . 12.50
C
OMPLIANCE
V
OLUME
:
V
AS
(
FT
3
) . . . . . . . . 1.67
V
AS
(
LITERS
) . . . . . 47.40
S
USPENSION
C
OMPLIANCE
:
C
MS
(µ
M
/N) . . . . 143.68
M
OVING
M
ASS
, A
IR
L
OAD
:
M
MS
(
GRAMS
). . . . 214.80
M
OVING
M
ASS
, D
IAPHRAGM
:
M
MD
(
GRAMS
) . . . 208.72
F
REE
-A
IR
R
ESONANCE
:
F
S
(H
Z
) . . . . . . . . 28.65
M
ECHANICAL
Q:
Q
MS
. . . . . . . . . . . 6.71
E
LECTRICAL
Q:
Q
ES
. . . . . . . . . . . . 0.48
T
OTAL
Q:
Q
TS
. . . . . . . . . . . . 0.45
M
AGNETIC
-G
AP
H
EIGHT
:
H
AG
(
IN
) . . . . . . . . . 0.47
H
AG
(
MM
) . . . . . . . 12.00
V
OICE
-C
OIL
H
EIGHT
:
H
VC
(
IN
) . . . . . . . . . 1.72
H
VC
(
MM
) . . . . . . . 43.80
M
AXIMUM
E
XCURSION
:
X
MAX
(
IN
) . . . . . . . . 0.63
X
MAX
(
MM
) . . . . . . 15.90
SEALED BOX VOLUME
(INCLUDES DRIVER DISPLACEMENT)
SEALED
FREQUENCY RESPONSE @ 2.83 V
SEALED
TRANSDUCER EXCURSION @ 450 W
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com
P1220 12" Woofer – Technical Data
mounting depth
6.75" (172.00 mm)
cutout diameter
11.00" (280.00 mm)
outer diameter
12.31" (313.00 mm)
V
BOX
=
1.00 ft
3
(28.32 liters)
(stuffed with loosely-packed fiberfill)
P1220
(side view)
C
dB
100
95
90
85
80
75
70
65
60
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
20 Frequency 50 100 Hz 200 500 1k 2 k
