JBL DS120
Instrukcja Serwisowa

DS120 12" Woofer � Technical Data
SEALED BOX VOLUME VENTED BOX VOLUME

length = 6.36"

Port
fo = 34 Hz

DS120
(side view)

DS120
(side view)

VBOX = 1.50 ft3 (42.48 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

VBOX = 2.50 ft3 (70.80 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

diameter = 4.0"

SEALED FREQUENCY RESPONSE @ 2.83 V
95 dB 105 90 In-Car 12 dB LP @ 80 Hz 100

VENTED FREQUENCY RESPONSE @ 2.83 V
dB In-Car 12 dB LP @ 90 Hz

85

Out-Of-Car

95

80

90

75

85 Out-Of-Car

70

80

65

75

60

70

55 20 Frequency 50 100 Hz 200 500 1k

C

65 20 Frequency 50 100 Hz 200 500 1k

C

2k

2k

SEALED EXCURSION/GROUP DELAY @ 100 W
8.0 Xd mM T mSec 10.0 7.0 7.5 17.5

VENTED EXCURSION/GROUP DELAY @ 175 W
20.0 Xd mM T mSec 40 30

6.0 Group Delay 5.0

5.0

15.0 Group Delay

20

2.5

12.5

10

4.0

0.0

10.0

0

3.0 2.0

Transducer Excursion

-2.5 -5.0

7.5 5.0

Transducer Excursion

-10 -20

1.0

-7.5

2.5

-30

0.0 20 Frequency 50 100 Hz 200 500 1k

-10.0 2k
C

0 20 Frequency 50 100 Hz 200 500 1k

C

-40

2k

7�6 . . . . . . JBL Technical Data