INFINITY REFERENCE1020W
Service Manual

Reference 1020w 10" Woofer � Technical Data
CAR AUDIO

VENTED BOX VOLUME (INCLUDES DRIVER/PORT DISPLACEMENTS)

SEALED BANDPASS BOX VOLUME (INCLUDES DRIVER/PORT DISPLACEMENTS)

length = 9.01"

Port
fo = 28.0 Hz

Port
fo = 50.0 Hz

length = 7.87"

Reference 1020w
(side view)

Reference 1020w
(side view)

diam. = 4"

VBOX = 1.75 ft3 (49.56 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

diameter = 3"

V

REAR (stuffed with loosely-packed fiberfill)

= 1.00 ft3 (28.32 liters)

V

FRONT

= 1.00 ft3 (28.32 liters)

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

SEALED BANDPASS FREQUENCY RESPONSE @ 2.83 V
100 dB In-Car 12 dB LP @ 80 Hz Out-Of-Car

95 Out-Of-Car 90

90

85

85

80

80

75

75

70

70

65

65 20 Frequency 50 100 Hz 200 500 1k

C

60 20 Frequency 50 100 Hz 200 500 1k

C

2k

2k

VENTED EXCURSION/GROUP DELAY @ 250 W
40 Xd mM T mSec 40 20.0 35 30 17.5

SEALED BANDPASS EXCURSION/GROUP DELAY @ 225 W
Xd mM T mSec 20 15

30

20

15.0

10

25 Group Delay 20

10

12.5 Group Delay

5

0

10.0

0

15

-10

7.5

-5

10

-20

5.0

-10

5

Transducer Excursion

-30

2.5 Transducer Excursion

-15

0 20 Frequency 50 100 Hz 200 500 1k

C

-40

0.0 20 Frequency 50 100 Hz 200 500 1k

C

-20

2k

2k

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