4 L1 1 SL

Professional Woofer
Code: Z001804

Nominal overall diameter: 4″
Nominal voice coil diameter: 1″
Magnet material: Neodymium
Basket material: Pressed sheet steel
Power: 140 W
Sensitivity: 90.5 dB
Frequency range: 120-10000 Hz

 

Description

 

  • Rated Power measured with 2 hours test with pink noise signal, 6dB crest factor, loudspeaker in free air, power calculated on rated Zmin
  • Power on Continuous Program is defined as 3 dB greater than the Rated Power
  • Sensitivity calculated by Thiele and Small parameters, for SPL average in box refer to frequency response
  • Thiele and Small parameters measured with laser system after preconditioning test
  • Xmax measured with respect to a THD of 10%
  • Xvar value corresponding to a decay of the Force Factor, or Compliance, or both, equal to the 50% of the small signal value.
  • Due to continuing product improvement, the features and the design are subject to change without notice.

 

Additional information

General Specifications
Nominal Diameter

104 x 104 mm / 4 in

Nominal Impedance

8 Ω

Rated Power AES

70 W

Continuos Program Power

140 W

Sensitivity @ 1W/1m

90.5 dB

Voice Coil Diameter

25 mm (1")

Voice Coil Winding Depth

10 mm

Magnetic Gap Depth

5 mm

Flux Density

1.39 T

Magnet Weight

92 g

Net Weight

0.4 Kg

Constructive Characteristics
Magnet Type

Neodymium

Basket Material

Pressed Sheet Steel

Voice Coil Winding Material

Aluminium

Voice Coil Former Material

Aluminium

Cone Material

Paper

Cone Treatment

Surface Waterproof Treatment

Surround Material

Treated Cloth

Dust Dome Material

Polypropylene ogive

Mounting Information
Overall Diameter

104×104 mm

Baffle Cutout Diameter

90 mm

Mounting Holes

4 holes Ø5 on Ø106 mm

Total Depth

53.8 mm

Thiele/Small Parameters
Re

5.5 Ω

Qms

2.15

Qts

0.36

Cms

440 µm/N

Vas

1.2 l

X max

+/- 2.5 mm

N

0.46 %

Fs

120.0 Hz

Qes

0.44

Mms

4.0 g

Bxl

6.16 Tm

Sd

44.2 cm²

X var

+/- 4.1 mm

Le (1KHz)

0.15 mH