INFINITY REFERENCE811W
Service Manual

Reference 811w 8" Woofer � Technical Data
SEALED BANDPASS BOX VOLUME NOTES

Port
fo = 90 Hz

length = 9.20"

Reference 811w
(side view) diam. = 3"

VREAR = 0.60 ft3 (16.99 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

VFRONT = 0.20 ft3 (5.67 liters)

SEALED BANDPASS FREQUENCY RESPONSE @ 2.83 V
dB 95 In-Car 12 dB LP @ 80 Hz 90 Out-Of-Car 85

80

75

70

65

60

55 20 Frequency 50 100 Hz 200 500 1k

C

2k

SEALED BANDPASS EXCURSION/GROUP DELAY @ 125 W
20.0 Xd mM T mSec 40 17.5 30

15.0

20

12.5

Group Delay

10

10.0

0

7.5

-10

5.0 Transducer Excursion 2.5

-20

-30

0.0 20 Frequency 50 100 Hz 200 500 1k

C

-40

2k

8�4 . . . Infinity Technical Data