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INFINITY REFERENCE1220W
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of INFINITY REFERENCE1220W Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 1 (click to view)
Reference 1220w 12" Woofer � Technical Data
CAR AUDIO

SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS: 12" (304.8 MM) 92 dB 300 WRMS 20 ~ 800 HZ 4 OHMS 2.0" (50.0 MM)

SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)

Reference 1220w
(side view)

mounting depth 6.125" (155.58 mm)

VBOX = 1.25 ft3 (35.40 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

cutout diameter 11.125" (282.58 mm) outer diameter 12.25" (311.15 mm)

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

THIELE-SMALL PARAMETERS
VOICE COIL DC RESISTANCE: R
EVC

90 85

Out-Of-Car

(OHMS) . . . . . . 3.43

VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 1.16 DRIVER RADIATING AREA: S D (IN 2) . . . . . . . . 82.15 S D (M2) . . . . . . . 530.00 MOTOR FORCE FACTOR: COMPLIANCE VOLUME: SUSPENSION COMPLIANCE: MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: FREE-AIR RESONANCE: MECHANICAL Q: ELECTRICAL Q: TOTAL Q: MAGNETIC-GAP HEIGHT: VOICE-COIL HEIGHT: MAXIMUM EXCURSION: BL (TM) . . . . . . . . 10.86 VAS (FT3) . . . . . . . . 4.55 VAS (LITERS) . . . . 128.80 C MS (µM/N) . . . . 320.47 MMS (GRAMS). . . . 137.20 MMD (GRAMS) . . . 130.14 FS (HZ) . . . . . . . . 24.00 Q MS . . . . . . . . . . . 8.21 Q ES . . . . . . . . . . . . 0.60 Q TS . . . . . . . . . . . . 0.56 HAG (IN) . . . . . . . . . 0.31 HAG (MM) . . . . . . . . 7.92 H (IN) . . . . . . . . . 1.25
VC

80 75 70

65
C

60 20 Frequency 50 100 Hz 200 500 1k

2k

SEALED EXCURSION/GROUP DELAY @ 250 W
20.0 Xd mM 17.5 15.0 T mSec 20 15 10

12.5

Group Delay

5

10.0

0

7.5 5.0 2.5 0.0 20 Frequency 50 100 Hz 200 500 1k Transducer Excursion
C

-5 -10 -15 -20

HVC (MM) . . . . . . . 31.75 X MAX (IN) . . . . . . . . 0.47 X MAX (MM) . . . . . . 11.91

2k

Harman Consumer Group � 250 Crossways Park Drive � Woodbury, NY 11797 � VOICE: 516-496-3400 � FAX: 516-496-4868 � www.infinitysystems.com

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