Infinity Reference 1250w Instruction manual

SPECIFICATIONS
D IAMETER :12" (300 MM )
S
ENSITIVITY (2.83 V @ 1 M ): 93 dB
P
OWER H ANDLING :300 W1200 W
PEAK
RMS
F REQUENCY R ESPONSE : 23 ~ 400 H Z
N OMINAL I MPEDANCE :4 OHMS
V OICE -C OIL D IAMETER :2.0" (51.0 MM )
D
IMENSIONS :
THIELE-SMALL PARAMETERS
V OICE C OIL D C R ESISTANCE :R
EVC
( OHMS ) . . . . . . 3.40
V
OICE C OIL I NDUCTANCE @ 1 K H Z :L
EVC
( M H) . . . . . . . 2.54
D
RIVER R ADIATING A REA :S
D
( IN
2
) . . . . . . . . 82.46
S
D
( M
2
) . . . . . . . 532.00
M
OTOR F ORCE F ACTOR :B L (T M ) . . . . . . . . 14.24
C
OMPLIANCE V OLUME :V
AS
( FT
3
) . . . . . . . . 3.00
V
AS
( LITERS ) . . . . . 84.40
S
USPENSION C OMPLIANCE :C
MS
(µ M /N) . . . . 210.00
M
OVING M ASS , A IR L OAD :M
MS
( GRAMS ). . . . 187.60
M
OVING M ASS , D IAPHRAGM :M
MD
( GRAMS ) . . . 180.60
F
REE -A IR R ESONANCE :F
S
(H Z ) . . . . . . . . 25.40
M
ECHANICAL Q: Q
MS
...........7.62
E
LECTRICAL Q: Q
ES
........... 0.50
T
OTAL Q: Q
TS
............0.47
M
AGNETIC -G AP H EIGHT :H
AG
( IN ) . . . . . . . . 3/8
H
AG
( MM ) . . . . . . . . 9.00
V
OICE -C OIL H EIGHT :H
VC
( IN ) .. . . . . . . . 1-1/4
H
VC
( MM ) .. . . . . . . . . 32
M
AXIMUM E XCURSION :X
MAX
( IN ) . . . . . . . . 7/16
X
MAX
( MM ) . . . . . . 11.50
SEALED BOX VOLUME
(INCLUDES DRIVER DISPLACEMENT)
SEALEDENCLOSURE
FREQUENCYRESPONSE @ 2.83 V
SEALEDENCLOSURE CONE
EXCURSION @ 300 W
Harman Consumer Group •250 Crossways Park Drive •Woodbury, NY11797 • VOICE:516-674-4463 •www.infinitysystems.com
Reference 1250w 12" Woofer – Technical Data
CAR AUDIO
mounting depth
5-1/16" (129 mm)
cutout diameter
11-3/16" (284mm)
outer diameter
12-7/16" (316mm)
V
BOX
=1.25 ft
3
(35.40 liters)
Reference 1250w
(side view)
20 Hz 30 40 50 60 70 80 90 100 200300
20 Hz 30 40 50 60 70 80 90 100 200300
dBSPL
55
60
65
70
75
80
85
90
95
100
105
M
5u
10u
20u
50u
100u
200u
500u
1m
2m
5m
10m
20m
30m
Out-Of-Car
In-Car
12 dB LP @ 80 Hz

VENTED BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
VENTED ENCLOSURE
FREQUENCY RESPONSE @ 2.83 V
VENTED ENCLOSURE CONE
EXCURSION @ 300 W
BANDPASS BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
BANDPASS ENCLOSURE
FREQUENCY RESPONSE @ 2.83 V
BANDPASS ENCLOSURE CONE
EXCURSION @ 300 W
Harman Consumer Group • 250 Crossways Park Drive • Woodbury, NY 11797 •VOICE: 516-674-4463 • www.infinitysystems.com
Reference 1250w 12" Woofer – Technical Data
CAR AUDI O
Reference 1250w
(side view)
Port
fB=30.0 Hz
diameter = 4"
102mm
length = 12-1/4"
312mm
V
BOX
= 2 ft
3
(56.63 liters) V
REAR
= 1.25 ft
3
(35.40 liters) V
FRONT
=1.25 ft
3
(35.40 liters)
Reference 1250w
(side view)
diam. = 4"
102mm
2 Ports
fB= 63 Hz
length =
8"
204mm
20 Hz 30 40 50 60 70 80 90 100 200300
55
60
65
70
75
80
85
90
95
100
105
20 Hz 30 40 50 60 70 80 90 100 200300
55
60
65
70
75
80
85
90
95
100
105
dBSPL dBSPL
20 Hz 30 40 50 60 70 80 90 100 200300
5u
10u
20u
50u
100u
200u
500u
1m
2m
5m
10m
20m
30m M
20 Hz 30 40 50 60 70 80 90 100 200300
5u
10u
20u
50u
100u
200u
500u
1m
2m
5m
10m
20m
30m M
Out-Of-Car
In-Car
12dB LP @ 80 Hz
Out-Of-Car
In-Car
12dB LP @ 80 Hz