INFINITY REFERENCE1232W
Service Manual

Reference 1232w 12" Woofer � Technical Data
CAR AUDIO

VENTED BOX VOLUME (INCLUDES DRIVER/PORT DISPLACEMENTS)

SEALED BANDPASS BOX VOLUME (INCLUDES DRIVER/PORT DISPLACEMENTS)

length = 12.26"

Port
fo = 30.0 Hz

(2) Ports
fo = 62.6 Hz

length = 8.00"

Reference 1232w
(side view)

Reference 1232w
(side view)

diam. = 4"

VBOX = 2.00 ft3 (56.64 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

diameter = 4"

VREAR = 1.25 ft3 (35.40 liters)
(stuffed with loosely-packed fiberfill)

VFRONT = 1.25 ft3 (35.40 liters)

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

SEALED BANDPASS FREQUENCY RESPONSE @ 2.83 V
dB In-Car 12 dB LP @ 70 Hz

95

Out-Of-Car

95 Out-Of-Car

90

90

85

85

80

80

75

75

70

70

65 20 Frequency 50 100 Hz 200 500 1k

C

65 20 Frequency 50 100 Hz 200 500 1k

C

2k

2k

VENTED EXCURSION/GROUP DELAY @ 350 W
20.0 Xd mM T mSec 40 20.0 17.5 30 17.5

SEALED BANDPASS EXCURSION/GROUP DELAY @ 300 W
Xd mM T mSec 40 30

15.0

20

15.0

20

12.5 Group Delay 10.0

10

12.5 Group Delay

10

0

10.0

0

7.5

-10

7.5

-10

5.0

-20

5.0

-20

2.5

Transducer Excursion

-30

2.5 Transducer Excursion

-30

0.0 20 Frequency 50 100 Hz 200 500 1k

C

-40

0.0 20 Frequency 50 100 Hz 200 500 1k

C

-40

2k

2k

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