Infinity 1240w 12 specifications Specifications, Sealed Box Volume, Thiele-Smallparameters, 93 dB

Reference 1240w 12" Woofer – Technical Data

CAR AUDIO

SPECIFICATIONS

DIAMETER:	12" (300MM )
SENSITIVITY (2.83 V @ 1 M):	93 dB
POWER HANDLING:	300 WRMS 1200 WPEAK
FREQUENCY RESPONSE:	23 ~ 400 HZ
NOMINAL IMPEDANCE:	4 OHMS
VOICE-COIL DIAMETER:	2.0" (51.0 MM)
DIMENSIONS:

mounting depth 5-1/16" (129 mm)

SEALED BOX VOLUME

(INCLUDES DRIVER DISPLACEMENT)

Reference 1240w

(side view)

VBOX = 1.25 ft3 (35.40 liters)

cutout diameter

11-3/16" (284mm)

outer diameter

12-7/16" (316mm)

THIELE-SMALL PARAMETERS

VOICE COIL DC RESISTANCE:	REVC (OHMS) . . . .	. . 3.40
VOICE COIL INDUCTANCE @ 1 KHZ:	LEVC (MH)	. . 2.54
DRIVER RADIATING AREA:	SD (IN2)	. 82.46
	SD (M2)	532.00
MOTOR FORCE FACTOR:	BL (TM)	. 14.24
COMPLIANCE VOLUME:	VAS (FT3)	. . 3.00
	VAS (LITERS) . . . .	. 84.40
SUSPENSION COMPLIANCE:	CMS (µM/N) . . . .	210.00
MOVING MASS, AIR LOAD:	MMS (GRAMS). . . .	187.60
MOVING MASS, DIAPHRAGM:	MMD (GRAMS) . . . 180.60
FREE-AIR RESONANCE:	FS (HZ)	. 25.40
MECHANICAL Q:	QMS	. . 7.62
ELECTRICAL Q:	QES	. 0.50
TOTAL Q:	QTS	. . 0.47
MAGNETIC-GAP HEIGHT:	HAG (IN)	. 3/8
	HAG (MM)	. . 9.00
VOICE-COIL HEIGHT:	HVC (IN)	. 1-1/4
	HVC (MM)	. . . 32
MAXIMUM EXCURSION:	XMAX (IN)	. . 7/16
	XMAX (MM)	. 11.50

SEALED ENCLOSURE

FREQUENCY RESPONSE @ 2.83 V

105 dBSPL
100
95	In-Car
	12 dB LP @ 80 Hz
90
85
80	Out-Of-Car
75
70
65
60
55	20 Hz	30	40	50	60	70	80	90 100	200	300

SEALED ENCLOSURE CONE

EXCURSION @ 300 W

30m M

20m

10m

5m

2m

1m

500u

200u

100u

50u

20u

10u

5u

20 Hz 30 40 50 60 70 80 90 100 200 300

Harman Consumer Group • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-674-4463 • www.infinitysystems.com