4 C 1,5 CP

Coaxial unit for HiFi and Studio Monitor
Code: Z001920

Nominal overall diameter: 4″
Nominal voice coil diameter: 1.5″
Magnet material: Ferrite
Basket material: Aluminium Die-Cast
Power: 200 W
Sensitivity: 91.2 dB
Frequency range: 100-18000 Hz





  • 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.


Informazioni aggiuntive

General Specifications
Nominal Diameter

106 mm / 4 in

Nominal Impedance LF

8 Ω

Nominal Impedance HF

8 Ω

Sensitivity @ 1W/1m LF

91.2 dB

Sensitivity @ 1W/1m HF

91.9 dB

Voice Coil Diameter LF

38 mm (1.5")

Voice Coil Diameter HF

25 mm (1")

Voice Coil Winding Depth LF

9 mm

Voice Coil Winding Depth HF

1.7 mm

Magnetic Gap Depth LF

5 mm

Magnetic Gap Depth HF

2 mm

HF Recommended Crossover Frequency

3.0 kHz

Magnet Weight LF

405 g

Magnet Weight HF

14 g

Net Weight

1.8 Kg

Rated Power AES

100 W

Continuos Program Power

200 W

Constructive Characteristics
Magnet Type

Ferrite (LF) Neodymium (HF)

Basket Material

Aluminium Die-Cast

Surround Material

Treated Cloth

LF Voice Coil Winding/Former Material

Copper / Epotex

HF Voice Coil Winding/Former Material

Copper / Aluminium

LF Cone Material

Surface Treated Paper

HF Dome Material

Treated Silk

HF Spare Parts Code


Mounting Information
Overall Diameter

105.5×105.5 mm

Baffle Cutout Diameter

91 mm

Mounting Holes

4 holes Ø5 on Ø106 mm

Total Depth

68.6 mm

Thiele/Small Parameters





413 µm/N


1.5 l

X max

+/- 2.0 mm


0.51 %




5.4 g


7.27 Tm


51.5 cm²

X var

+/- 2.5 mm

Le (1KHz)

0.35 mH

Re (LF)

5.1 Ω

Re (HF)

6.0 Ω

Fs (LF)

102.0 Hz

Fs (HF)

1500 Hz