JBL P-1200 Manuale di istruzioni

SPECIFICATIONS

DIAMETER: 12" (305.0 MM)

SENSITIVITY (2.83 V @ 1 M): 92 dB

POWER HANDLING: 280 WRMS

FREQUENCY RESPONSE: 25 HZ~ 2 KHZ

NOMINAL IMPEDANCE:5OHMS

VOICE-COIL DIAMETER: 2.0" (50.7 MM)

DIMENSIONS:

THIELE-SMALL PARAMETERS

VOICE COIL DCRESISTANCE:R

EVC (OHMS) . . . . . . 4.50

VOICE COIL INDUCTANCE @ 1 KHZ:L

EVC (MH). . . . . . . . 1.00

DRIVER RADIATING AREA:S

D(IN2) . . . . . . . . 85.03

SD(CM2). . . . . . . 551.00

MOTOR FORCE FACTOR:BL(TM) . . . . . . . . 13.10

COMPLIANCE VOLUME:V

AS (FT3). . . . . . . . . 5.21

VAS (LITERS). . . . . 123.00

SUSPENSION COMPLIANCE:C

MS (µM/N) . . . . 285.30

MOVING MASS, AIR LOAD:M

MS (GRAMS). . . . . 98.65

MOVING MASS, DIAPHRAGM:M

MD (GRAMS). . . . . 91.00

FREE-AIR RESONANCE:F

S(HZ) . . . . . . . . 30.00

MECHANICAL Q: QMS . . . . . . . . . . . . 5.50

ELECTRICAL Q: QES . . . . . . . . . . . . 0.49

TOTAL Q: QTS . . . . . . . . . . . . 0.45

MAGNETIC-GAP HEIGHT:H

AG (IN) . . . . . . . . . 7.11

HAG (MM) . . . . . . . . 0.28

VOICE-COIL HEIGHT:H

VC (IN) . . . . . . . . 22.61

HVC (MM) . . . . . . . . 0.90

MAXIMUM EXCURSION:X

MAX (IN) . . . . . . . . 0.31

XMAX (MM). . . . . . . . 7.75

IMPEDANCE CURVE

INFINITE BAFFLE

FREQUENCY RESPONSE @ 2.83 V

INFINITE BAFFLE

EXCURSION/GROUP DELAY @ 75 W

P1200 12" Woofer – Technical Data

7•38 . . . . . JBL Technical Data

mounting depth

5.70" (144.78 mm)

cutout diameter

11.13" (274.32 mm)

outer diameter

12.00" (304.80 mm)

Ohms

100.0

1.0

3.0

10.0

30.0

20 Frequency 50 100 Hz 200 500 1k 2k

105

100

20 Frequency 50 100 Hz 200 500 1k 2k

Out-Of-Car

In-Car

12 dB LP @ 80 Hz

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

P1200

(side view)

Port

fo= 35 Hz

diameter = 4.0"

length = 8.11"

VBOX = 2.00 ft3 (56.64 liters)

(all sides lined with 1-inch fiberglass or fiberfill)

100

20 Frequency 50 100 Hz 200 500 1k 2k

Out-Of-Car

In-Car

12 dB LP @ 80 Hz

Xd mM

20.0

17.5

15.0

12.5

10.0

7.5

5.0

2.5

T mSec 40

-10

-20

-30

-40

20 Frequency 50 100 Hz 200 500 1k 2k

Transducer Excursion

Group Delay

VBOX = 1.50 ft3 (42.48 liters)

(all sides lined with 1-inch fiberglass or fiberfill)

P1200

(side view)

20 Frequency 50 100 Hz 200 500 1k 2k

Out-Of-Car

In-Car

12 dB LP @ 80 Hz

Xd mM

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

T mSec 20

0.0

-5

-10

-15

-20

20 Frequency 50 100 Hz 200 500 1k 2k

Transducer Excursion

Group Delay

SEALED

BOX VOLUME

SEALED

FREQUENCY RESPONSE @ 2.83 V

SEALED

EXCURSION/GROUP DELAY @ 225 W

VENTED

BOX VOLUME

VENTED

FREQUENCY RESPONSE @ 2.83 V

VENTED

EXCURSION/GROUP DELAY @ 350 W

P1200 12" Woofer – Technical Data

JBL Technical Data . . . . . 7•39

SEALED BANDPASS

BOX VOLUME

SEALED BANDPASS

FREQUENCY RESPONSE @ 2.83 V

SEALED BANDPASS

EXCURSION/GROUP DELAY @ 200 W

NOTES

P1200 12" Woofer – Technical Data

7•40 . . . . . JBL Technical Data

VREAR =

1.50 ft3 (42.48 liters)

(all sides lined with 1-inch fiberglass or fiberfill)

P1200

(side view)

VFRONT = 0.77 ft3

(21.81 liters)

(all sides lined with 1-inch

fiberglass or fiberfill)

diam. = 4"

Port

fo= 65 Hz

length =

5.27"

100

20 Frequency 50 100 Hz 200 500 1k 2k

Out-Of-Car

In-Car

12 dB LP @ 90 Hz

Xd mM

20.0

17.5

15.0

12.5

10.0

7.5

5.0

2.5

0.0

T mSec 40

-10

-20

-30

-40

20 Frequency 50 100 Hz 200 500 1k 2k

Transducer Excursion

Group Delay

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