RCF L15/554K

Very high efficiency and good linearity are distinctive features of this mid-bass woofer.
Kapton former voice coil, polycotton suspensions and treated cone guarantee the very high power handling of this transducer.
Applications
The L15/554 is designed to be mounted in compact size bass reflex enclosures. The good combination of voice coil length, very low mass weight and suspensions control makes the L15/554 a very good choice for high power 2 way systems. Thanks to a very high BL/Re ratio, small mechanical depth and a strong cone, the L15/554 is a good solution for horn loaded or hybrid horn loaded systems.

4-inch, Kapton former, copper voice coil

1200 Watt continuous program power handling

99 dB Sensitivity

40 Hz - 2 kHz Frequency range

M-roll damped surround

Exponential damped cone

GENERAL SPECIFICATIONS

Nominal Diameter

380/15

mm/inch

Rated Impedance

8

Ohm

Program Power

1200

Watts

Power handling capacity

600

Watts

Sensitivity 1W, 1m

99

dB

Frequency Range

40-2000

Hz

Effective Piston Diameter

325/12.8

mm/inch

Maximum Excursion Before Damage

44/1.73

mm/inch

Minimum Impedance

7.9

Ohm

Voice Coil Diameter

100/4

mm/inch

Voice Coil Material

Copper

Voice Coil Winding Depth

16/0.6

mm/inch

Number of layers

2

Kind of layer

Outside

Thickness Top Plate Depth

9/0.35

mm/inch

Cone Material

No pressed pulp

Cone Design

Curved

Surround Material

Polycotton

Surround Design

M - roll

THIELE - SMALL PARAMETERS

Resonance frequency

Fs

35

Hz

DC resistance

Re

6.6

Ohm

Mechanical factor

Qms

8.6

Electrical factor

Qes

0.25

Total factor

Qts

0.24

BL factor

BL

23

T - m

Effective Moving Mass

Mms

91

gr

Equivalent Cas air load

Vas

227

liters

Effective piston area

Sd

0.083

m2

Max. linear excursion

Xmax

5.8

mm

Voice - coil inductance @ 1KHz

Le1k

1.7

mH

Half-space efficiency

Eff

3.75

%

MOUNTING INFORMATION

Overall Diameter

387/15.2

mm/inch

Bolt Circle Diameter

371

mm

Bolt Hole Diameter

8/0.3

mm/inch

Front Mount Baffle Cut-out

358/14.1

mm/inch

Rear Mount Baffle Cut-out

362/14.2

mm/inch

Depth

138/5.4

mm/inch

Volume occupied by the driver

3.8

liters/ft3

BAFFLE CUTOUT DIAMETER

Net Weight

11.3/24.9

Kg/lbs

Shipping Weight

11.8/26.0

Kg/lbs