LF21X451

SPECIFICATIONS

General specifications

CONE DESIGN:

Curved

DUAL-FORCE AIR VENTILATION:

Yes

EFFECTIVE PISTON DIAMETER:

470 mm / 18.5 inch

FREQUENCY RANGE:

28 - 1000 Hz

KIND OF LAYERS:

inside/outside

MAGNETS:

Ceramic

MAX. EXCURSION BEFORE DAMAGE:

54 mm / 2.13 inch

MINIMIM IMPEDANCE:

6 ohm

NOMINAL DIAMETER:

21 inch / 533 mm

NUMBER OF LAYERS:

2

POWER HANDLING CAPACITY:

2000 W

PROGRAM POWER:

4000 W

RATED IMPEDANCE:

8 ohm

SENSITIVITY:

97 dB

SPIDER:

Dual with silicon based damping control

SURROUND DESIGN:

Triple roll

SURROUND MATERIAL:

Polycotton

TOP PLATE THICKNESS:

15 mm / 0.59 inch

VOICE COIL DIAMETER:

4.5 inch / 114 mm

VOICE COIL WINDING MATERIAL:

Copper

VOICE COIL LENGTH:

34 mm / 1.34 inch

Mounting Information

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

OVERALL DIAMETER:

547 mm / 21.54 inches

REAR MOUNT BAFFLE CUT-OUT:

512 mm / 20.16 inch

VOLUME OCCUPIED BY THE DRIVER:

6.5 liters / 0.26 ft3

Shipping informations

PACKAGE DEPTH:

604 mm / 23.78 inches

PACKAGE HEIGHT:

284 mm / 11.18 inches

PACKAGE WEIGHT:

18.5 kg / 40.79 lbs

PACKAGE WIDTH:

584 mm / 22.99 inches

Size

DIAMETER:

547 mm / 21.54 inches

HEIGHT:

245 mm / 9.65 inches

WEIGHT:

15.5 kg / 34.17 lbs