JBL GT1500 Manuale di istruzioni

SPECIFICATIONS

DIAMETER: 15" (381.0 MM)

SENSITIVITY (2.83 V @ 1 M): 97 dB

POWER HANDLING: 300 WRMS

FREQUENCY RESPONSE: 20 ~ 2,000 HZ

NOMINAL IMPEDANCE:4OHMS

VOICE-COIL DIAMETER: 2.0" (50.7 MM)

DIMENSIONS:

THIELE-SMALL PARAMETERS

VOICE COIL DCRESISTANCE:R

EVC (OHMS) . . . . . . 3.25

VOICE COIL INDUCTANCE @ 1 KHZ:L

EVC (MH). . . . . . . . 1.99

DRIVER RADIATING AREA:S

D(IN2) . . . . . . . 131.94

SD(CM2). . . . . . . 855.00

MOTOR FORCE FACTOR:BL(TM) . . . . . . . . 11.16

COMPLIANCE VOLUME:V

AS (FT3). . . . . . . . 19.67

VAS (LITERS). . . . . 463.93

SUSPENSION COMPLIANCE:C

MS (µM/N) . . . . 446.91

MOVING MASS, AIR LOAD:M

MS (GRAMS) . . . . 127.79

MOVING MASS, DIAPHRAGM:M

MD (GRAMS). . . . 113.42

FREE-AIR RESONANCE:F

S(HZ) . . . . . . . . 21.06

MECHANICAL Q: QMS . . . . . . . . . . . . 8.90

ELECTRICAL Q: QES . . . . . . . . . . . . 0.44

TOTAL Q: QTS . . . . . . . . . . . . 0.42

MAGNETIC-GAP HEIGHT:H

AG (IN) . . . . . . . . . 0.31

HAG (MM) . . . . . . . . 7.92

VOICE-COIL HEIGHT:H

VC (IN) . . . . . . . . . 0.67

HVC (MM) . . . . . . . 17.04

MAXIMUM EXCURSION:X

MAX (IN) . . . . . . . . 0.18

XMAX (MM). . . . . . . . 4.56

IMPEDANCE CURVE

INFINITE BAFFLE

FREQUENCY RESPONSE @ 2.83 V

INFINITE BAFFLE

EXCURSION/GROUP DELAY @ 40 W

GT1500 15" Woofer – Technical Data

7•26 . . . . . JBL Technical Data

Ohms

100.0

1.0

3.0

10.0

30.0

20 Frequency 50 100 Hz 200 500 1k 2k

110

105

100

20 Frequency 50 100 Hz 200 500 1k 2k

Out-Of-Car

In-Car

12 dB LP @ 60 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

mounting depth

6.69" (170.00 mm)

cutout diameter

13.94" (355.00 mm)

outer diameter

15.13" (384.18 mm)

VBOX = 2.50 ft3 (70.80 liters)

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

GT1500

(side view)

100

20 Frequency 50 100 Hz 200 500 1k 2k

Out-Of-Car

In-Car

12 dB LP @ 65 Hz

Xd mM

20.0

17.5

15.0

12.5

10.0

7.5

5.0

2.5

T mSec 20

-5

-10

-15

-20

20 Frequency 50 100 Hz 200 500 1k 2k

Transducer Excursion

Group Delay

GT1500

(side view)

(2) Ports

fo= 30 Hz

diameter = 4.0"

length = 10.86"

VBOX = 4.00 ft3 (113.28 liters)

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

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

T mSec 20

-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 @ 200 W

VENTED

BOX VOLUME

VENTED

FREQUENCY RESPONSE @ 2.83 V

VENTED

EXCURSION/GROUP DELAY @ 250 W

GT1500 15" Woofer – Technical Data

JBL Technical Data . . . . . 7•27

SEALED BANDPASS

BOX VOLUME

SEALED BANDPASS

FREQUENCY RESPONSE @ 2.83 V

SEALED BANDPASS

EXCURSION/GROUP DELAY @ 200 W

NOTES

GT1500 15" Woofer – Technical Data

7•28 . . . . . JBL Technical Data

VREAR =

2.50 ft3 (70.80 liters)

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

VFRONT =

1.75 ft3

(49.56 liters)

GT1500

(side view)

diam. = 4"

(2)Ports

fo= 60 Hz

length =

5.45"

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 40

-10

-20

-30

-40

20 Frequency 50 100 Hz 200 500 1k 2k

Transducer Excursion

Group Delay

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