Komponen Speaker 21 Inch RCF LF21N451 / LF 21N451 3000 Watt Original

Komponen Speaker 21 Inch RCF LF21N451 / LF 21N451 3000 Watt Original
General specifications
NOMINAL DIAMETER:
21 inch / 533 mm

RATED IMPEDANCE:
8 ohm

PROGRAM POWER:
3000 W

POWER HANDLING CAPACITY:
1500 W

SENSITIVITY:
98 dB

FREQUENCY RANGE:
30 - 1000 Hz

EFFECTIVE PISTON DIAMETER:
470 mm / 18.5 inch

MAX. EXCURSION BEFORE DAMAGE:
58 mm / 2.28 inch

MINIMIM IMPEDANCE:
7 ohm

VOICE COIL DIAMETER:
4.5 inch / 114 mm

VOICE COIL WINDING MATERIAL:
Copper

VOICE COIL LENGTH:
34 mm / 1.34 inch

NUMBER OF LAYERS:
2

KIND OF LAYERS:
inside/outside

TOP PLATE THICKNESS:
15 mm / 0.59 inch

CONE DESIGN:
Curved

SURROUND MATERIAL:
Polycotton

SURROUND DESIGN:
Triple roll

MAGNETS:
Neodymium

DUAL-FORCE AIR VENTILATION:
Yes

SPIDER:
Dual with silicon based damping control

*Thiele - small parameters
RESONANCE FREQUENCY (FS):
30 Hz

DC RESISTANCE (RE):
5.60 ohm

MECHANICAL FACTOR:
6.10 Qms

ELECTRICAL FACTOR (QES):
0.27 Qes

TOTAL FACTOR:
0.26 Qts

BL FACTOR (BL):
34.50 T x m

EFFECTIVE MOVING MASS (MMS):
315 gr

EQUIVALENT CAS AIR LOADED (VAS):
375 liters

EFFETTIVE PISTON AREA (SD):
0.17 m2

MAX. LINEAR EXCURSION (XMAX):
13 mm

VOICE COIL INDUCTANCE @ 1KHZ (LE1K):
3.00 mH

HALF-SPACE EFFICENCY (EFF):
4.00%

*Mounting Information
OVERALL DIAMETER:
547 mm / 21.54 inches

BOLT CIRCLE DIAMETER:
527 mm / 20.75 inch

BOLT HOLE DIAMETER:
7 mm / 0.28 inch

FRONT MOUNT BAFFLE CUT-OUT:
512 mm / 20.16 inch

REAR MOUNT BAFFLE CUT-OUT:
512 mm / 20.16 inch

VOLUME OCCUPIED BY THE DRIVER:
6.5 liters / 0.26 ft3