P1220D 12" Woofer – Technical Data - JBL

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P1220D 12" Woofer – Technical Data
SPECIFICATIONS
DIAMETER:
12" (304.8 MM)
SENSITIVITY (2.83 V @ 1 M): 95 dB
POWER HANDLING: 400 W RMS
(1,600 W PEAK
)
FREQUENCY RESPONSE: 20 ~ 450 HZ
NOMINAL IMPEDANCE:
VOICE-COIL DIAMETER:
DIMENSIONS:
mounting depth
6.75" (172.00 mm)
2 OHMS (PER COIL)
3.0" (76.2 MM)
cutout diameter
11.00" (280.00 mm)
outer diameter
12.31" (313.00 mm)
dB
100
SEALED BOX VOLUME
(INCLUDES DRIVER DISPLACEMENT)
P1220D
(side view)
V BOX = 1.00 ft 3 (28.32 liters)
(stuffed with loosely-packed fiberfill)
SEALED
FREQUENCY RESPONSE @ 2.83 V
In-Car
12 dB LP @ 80 Hz
THIELE-SMALL PARAMETERS*
95
90
Out-Of-Car
VOICE COIL DC RESISTANCE: R EVC
(OHMS) . . . . . 0.860
VOICE COIL INDUCTANCE @ 1 KHZ: L EVC
(MH) . . . . . . 0.330
DRIVER RADIATING AREA: S D
(IN 2 ) . . . . . . . . 74.71
S D
(CM 2 ) . . . . . . 482.00
MOTOR FORCE FACTOR: BL (TM) . . . . . . . . 7.608
COMPLIANCE VOLUME: V AS
(FT 3 ) . . . . . . . 1.649
V AS
(LITERS) . . . . . 46.70
SUSPENSION COMPLIANCE: C MS
(µM/N) . . . . 141.55
MOVING MASS, AIR LOAD: M MS
(GRAMS). . . . 197.03
MOVING MASS, DIAPHRAGM: M MD
(GRAMS) . . . 190.95
FREE-AIR RESONANCE: F S
(HZ) . . . . . . . . 30.14
MECHANICAL Q: Q MS
. . . . . . . . . . . 6.38
ELECTRICAL Q: Q ES
. . . . . . . . . . . . 0.56
TOTAL Q: Q TS
. . . . . . . . . . . . 0.51
MAGNETIC-GAP HEIGHT: H AG
(IN) . . . . . . . . . 0.47
H AG
(MM) . . . . . . . 12.00
VOICE-COIL HEIGHT: H VC
(IN) . . . . . . . . . 1.72
H VC
(MM) . . . . . . . 43.80
MAXIMUM EXCURSION: X MAX
(IN) . . . . . . . .0.63
X MAX
(MM) . . . . . . 15.90
*VOICE COILS CONNECTED IN PARALLEL
85
80
75
70
65
60
20 Frequency 50 100 Hz 200 500 1k 2 k
SEALED
TRANSDUCER EXCURSION @ 400 W
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
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com

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P1220D 12" Woofer – Technical Data
VENTED BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
SEALED BANDPASS BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
P1220D
(side view)
length = 12.58"
Port
f o = 28.0 Hz
P1220D
(side view)
Port
f o = 44.9 Hz
diam. = 6"
length =
10.50"
V BOX = 2.25 ft 3 (63.72 liters)
(stuffed with loosely-packed fiberfill)
diameter = 4"
V REAR = 1.50 ft 3 (42.48 liters)
(stuffed with loosely-packed fiberfill)
V FRONT = 2.00 ft 3
(56.64 liters)
(stuffed with loosely-packed
fiberfill)
VENTED
FREQUENCY RESPONSE @ 2.83 V
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
115
110
dB
In-Car
12 dB LP @ 80 Hz
110
105
dB
In-Car
12 dB LP @ 80 Hz
105
100
Out-Of-Car
100
95
Out-Of-Car
95
90
90
85
85
80
80
75
75
20 Frequency 50 100 Hz 200 500 1k 2 k
70
20 Frequency 50 100 Hz 200 500 1k 2 k
VENTED
TRANSDUCER EXCURSION @ 400 W
Xd mM
40
SEALED BANDPASS
TRANSDUCER EXCURSION @ 400 W
Xd mM
20.0
35
17.5
30
15.0
25
12.5
20
10.0
15
7.5
10
5.0
5
2.5
0
20 Frequency 50 100 Hz 200 500 1k 2 k
0.0
20 Frequency 50 100 Hz 200 500 1k 2 k
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com