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You are here: Home / Piezo ceramic transducer / Piezo Sound Elements / Multilayer Piezo Speaker piezoelectric transducer

Multilayer Piezo Speaker piezoelectric transducer

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1. Compact size, Simple construction
2. Light weight, low power consumption and low cost
3. High reliability
4.High fidelity full frequency

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Brief Introduction of Multilayer Piezo Speaker:

The bi-cylinder double-unit speaker is composed of a moving coil speaker unit and a multi-layer piezoelectric ceramic high-frequency compensation unit, which not only maintains the excellent low-frequency response of the moving coil unit, but also compensates for the lack of high-frequency high-frequency of the moving coil unit by the piezoelectric ceramic unit. The high frequency of the earphone is extended to 40KHz, which brings better instant response, higher resolution and reduction degree, and the sound is rich in texture and clear in layers. It can be said that the porcelain double unit speaker is an innovative revolution in the field of high fidelity full range headphones. .

 

Compared with the traditional moving iron unit and the ring iron unit, the circular porcelain double unit speaker has simple structure, light weight, low power consumption and low cost. The moving coil and the piezoelectric unit are used in parallel, and there is no need for frequency division processing, which is perfectly adapted to high quality lossless music play.

Features of Piezo Speaker
 

1. Compact size, Simple construction

2. Light weight, low power consumption and low cost

3. High reliability

4.High fidelity full frequency

 

Scope of applications of piezoelectric transducer
 

  • Headphones

  • 3C Devices

  • VR/AR intelligent terminals

 

Dimension

图片1 


Specification of this transducer
 

Model

Dimensions

Resonant frequency

Impedance

Electrical capacitance

D1×t [mm]

Fr [kHz]

[Ω]

CT[nF]

KLJ12N13.0-C1

Φ12×0.33

13.0±2.0

≤100

210±25%

* Customize on request.

 

Frequency response curve:

图片2

The picture above shows the frequency response curve of a certain brand of high-quality headphones. It starts to fall rapidly at about 9KHz, and the general headphones will have a rapid decline at 8KHz.


图片3

The picture above shows the frequency response curve after compensation using laminated piezoelectric ceramics(multilayer piezo speaker).

 

Materials Performance:

 

Key Technical Index

Unit

Value

Relative dielectric constant εr3T

-

3500±20%

Electromechanical coupling factor  Kp

-

70%

Longitudinal piezoelectric strain coefficient  d33

10-12C/N

≥650

Piezoelectric voltage constant  g33

10-3Vm/N

17

Elastic flexible coefficient  S11E

10-12m2/N

14.3

Elastic flexible coefficient  S33E

10-12m2/N

18.5

Dielectric loss  tgδ

10-3

≤1.5

M quality factor  Qm

-

45

Curie temperature  TC

240

Density  ρ

g/cm3

7.9


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Changzhou Keliking Electronics Co., Ltd.
Contact:Mr. Yao
Mobile:13656128000
Tel:86 +519-88671999-801
Fax:86 +519-88671999-808
Add:1-1301 Hang Seng Science Park, Tianning District, Changzhou, Jiangsu, China

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