NO.1 Diaphragm of loudspeaker tweeter

The film of treble speaker is the diaphragm of the tweeter in the speaker.The performance of diaphragm is mainly dependent on the stiffness, internal damping and quality of the diaphragm.There are three main components of modern sound equipment, namely audio source, electronic circuit and sound system.The first two parts have reach the level of sound, have reached a relatively perfect level, only sound system due to high-frequency diaphragm material and other restrictions, the performance of its high-frequency speakers has not been fully satisfied, it has become one of the main key to improve overall performance of audio equipment.Therefore, the development of new tweeter diaphragm material and the development of high quality high frequency loudspeaker have become one of the research directions of the field of materials and electric acoustic.

NO.2 Acoustic applications of diamond films

With its excellent acoustic characteristics, diamond has been applied effectively in high fidelity loudspeaker, SAW devices and acoustic sensor.

Among all natural and synthetic materials, diamond has the highest elastic modulus, the highest sound propagation rate, the highest hardness, low density, good acoustic damping characteristics, low specific gravity, high fidelity, excellent high frequency response characteristics, and diamond with high thermal conductivity, is conducive to the heat generated by the voice coil through the diaphragm to the space distribution, thereby enhancing the speaker can withstand the input power, to avoid long-term high-power input caused by burning voice coil or change the speaker impedance, affecting the accuracy of sound positioning. Therefore, the best material for high-fidelity loudspeaker tweeter diaphragm. Top audio brand, the B & W Diamond Tweets 800D series, using CVD industrial synthetic diamond to produce loudspeaker tweeter diaphragm that began to break and vibrate at 70KHz.

NO.3 Our products-- CVD Industrial synthetic diamond film for treble speaker

CVD diamond has high elastic modulus and relatively low mass density, and it is the material with fastest acoustic transmission, the longitudinal wave velocity is up to 18000 m/s, which is more than three times of common diaphragm materials Al, Ti, so it is an ideal material for making Hi-Fi acoustic devices. However, the application of Be is greatly limited due to its toxicity although its acoustic transmission velocity is also not low.

Loudspeakers of 26mm in diameter with diaphragm made of CVD diamond is up to 70kHz, more than 2 times of Al, and 40% higher than that of Be. 

Main features: High frequency of the crossover diaphragm, small total harmonic distortion, high power capacity.It is mainly suitable for producing high-pitched loudspeakers.

Available production: CVD polycrystalline diamond，without any metal or non-metallic adhesive,

usually shaped like a dome, translucent.

NO.4 The advantages of CVD Industrial synthetic diamond film for treble speaker

1. The fastest sound propagation rate;

2. High elastic modulus;

3. Lower mass density;

4. High thermal conductivity and accurate sound positioning;

5. High fidelity;

6. Excellent high frequency response characteristics;

7. Maximum hardness;

8. Good acoustic damping characteristics;