HARMAN KARDON REFERENCE840W
Manual de Servicio

Reference 840w 8" Woofer � Technical Data
CAR AUDIO

SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS:
mounting depth 4-5/16" (110 mm)

8" (200MM) 91 dB 200 WRMS 800 W PEAK 30 ~ 400 HZ 4 OHMS 2.0" (51.0 MM)

SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)

Reference 840w
(side view)

VBOX = 0.35 ft3 (9.91 liters)

cutout diameter 7-1/16" (179mm) outer diameter 8-1/4" (210mm)

SEALED ENCLOSURE FREQUENCY RESPONSE @ 2.83 V
105 100 dBSPL 95 90 85 80 75 70 65 60 55 20 Hz 30 40 50 60 70 80 90 100 200 300

In-Car 12 dB LP @ 100 Hz

THIELE-SMALL PARAMETERS
VOICE COIL DC RESISTANCE: R EVC (OHMS) . . . . . . 3.49 VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 1.64 DRIVER RADIATING AREA: 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: S D (IN 2) . . . . . . . . 33.17 S D (M ) . . . . . . . 214.00
2

Out-Of-Car

BL (TM) . . . . . . . . 12.69 VAS (FT3) . . . . . . . . 0.61 VAS (LITERS) . . . . . 17.38 C MS (µM/N) . . . . 265.64 M MS (GRAMS). . . . 114.80 MMD (GRAMS) . . . 113.00 FS (HZ) . . . . . . . . 28.80 Q MS . . . . . . . . . . . 6.03 Q ES . . . . . . . . . . . 0.450 Q TS . . . . . . . . . . . . 0.42 HAG (IN) . . . . . . . . 3/8 HAG (MM) . . . . . . . . 9.00 HVC (IN) .. . . . . . . . 1-1/4 HVC (MM) . . . . . . . . . . 32 X
MAX

SEALED ENCLOSURE CONE EXCURSION @ 200 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

(IN) . . . . . . . . 7/16

X MAX (MM) . . . . . . 11.50
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