JBL P1224 User Manual

SPECIFICATIONS
D IAMETER : 12" (305 MM )
S
E
NSITIVITY
(2.83 V @ 1 M ): 94 dB
P
OWER H ANDLING : 400 W 1600 W
PEAK
R
MS
F REQUENCY R ESPONSE : 23 ~ 450 H Z
N OMINAL I MPEDANCE :4 OHMS (PER COIL)
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 ) . . . . . . 2.00
V
OICE C OIL I NDUCTANCE @ 1 K H Z : L
EVC
( M H) . . . . . . . 1.60
D
RIVER R ADIATING A REA :S
D
( IN
2
) . . . . . . . . 87.11
S
D
. . . . . . 562.00
M
OTOR F ORCE F ACTOR :B L (T M ) . . . . . . . . 12.88
C
OMPLIANCE V OLUME :V
AS
( FT
3
) . . . . . . . . 1.93
V
AS
( LITERS ) . . . . . 54.60
S
USPENSION C OMPLIANCE :C
MS
(µ M /N) . . . . 121.00
M
OVING M ASS , A IR L OAD :M
MS
( GRAMS ). . . . 286.70
M
OVING M ASS , D IAPHRAGM :M
MD
( GRAMS ) . . . 279.00
F
REE -A IR R ESONANCE :F
S
(H Z ) . . . . . . . . 27.00
M
ECHANICAL Q: Q
MS
. . . . . . . . . . . 7.40
E
LECTRICAL Q: Q
ES
. . . . . . . . . . . . 0.58
T
OTAL Q: Q
TS
. . . . . . . . . . . . 0.54
M
AGNETIC -G AP H EIGHT :H
AG
( IN ) . . . . . . . . 0.48
H
AG
( MM ) . . . . . . . 12.00
V
OICE -C OIL H EIGHT :H
VC
( IN ). . . . . . . . . 1.58
H
VC
( MM ). . . . . . . 40.00
M
*VOICE COIL CONNECTED IN PARALLEL
AXIMUM E XCURSION :X
MAX
( IN ) . . . . . . . . .56
X
MAX
( MM ) . . . . . . 14.00
SEALED ENCLUSURE VOLUME
(INCLUDES DRIVER DISPLACEMENT)
SEALED ENCLOSURE
FREQUENCY RESPONSE @ 2.83 V
SEALED ENCLOSURE TRANSDUCER
EXCURSION @ 400 W
JBL Consumer Group • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com
P1224 12" Woofer – Technical Data
mounting depth
6-3/4" (171 mm)
cutout diameter
11-1/16" (281mm)
outer diameter
14-5/8" (371mm)
V
B
OX
= 1.00 ft
3
(28.32 liters)
P1224
(
side view)
20 Hz
30 40 50 60 70 80 90
100
200 300
20 Hz
30 40 50 60 70 80 90
100
200 300
dBSPL
M
5u
10u
20u
50u
100u
200u
500u
1m
2m
5m
10m
20m
30m
In-Car
1
2 dB LP @ 80 Hz
Out-Of-Car
®
(stuffed with loose-packed fiberfill)
6
5
70
75
8
0
85
90
95
1
00
105
1
10
115
( CM
2
)

JBL P1224 Specifications

General

Type	Car Subwoofer
Size	12 inches
Driver Size	12 inches
Power Handling (RMS)	400 Watts
Power Handling (Peak)	1600 Watts
Impedance	4 ohms
Sensitivity	93 dB
Voice Coil Diameter	2.5 inches
Magnet Weight	60 oz
Mounting Depth	6.5 inches
Enclosure Type	Sealed

Summary

Speaker Specifications

Key Specifications

Details core parameters like diameter, sensitivity, power handling, frequency response, impedance, and voice-coil diameter.

Dimensions

Provides physical measurements including mounting depth, cutout diameter, and outer diameter for installation.

Thiele-Small Parameters

Electrical Parameters

Lists electrical characteristics such as DC resistance, inductance, and motor force factor.

Mechanical Parameters

Details mechanical properties including compliance, moving mass, resonance frequency, and excursion limits.

Sealed Enclosure Performance

Sealed Enclosure Volume

Specifies the recommended enclosure volume including driver displacement for optimal performance.

Frequency Response

Presents the frequency response curve for the P1224 in a sealed enclosure at 2.83V.

Transducer Excursion

Illustrates the transducer's excursion limits within a sealed enclosure at 400W power.

Vented Enclosure Performance

Vented Enclosure Volume

Details the recommended volume for a vented enclosure, including driver and port displacements.

Frequency Response

Shows the frequency response graph for the P1224 when used in a vented enclosure.

Transducer Excursion

Illustrates the transducer's excursion within a vented enclosure at 400W power.

Bandpass Enclosure Performance

Bandpass Enclosure Volume

Specifies volumes for front and rear chambers of a bandpass enclosure, including displacements.

Frequency Response

Presents the frequency response curve for the P1224 in a bandpass enclosure configuration.

Transducer Excursion

Shows the transducer's excursion limits in a bandpass enclosure at 400W power.