Focus on R & D and manufacturing of micro electro acoustic fields, such as voice devices and ultrasonic devices.
The company is a professional manufacturer specializing in the production of communication electroacoustic devices by the Ministry of electronics industry.
Products registered with "Tianhong" trademark have been praised by domestic and foreign customers.
The company has five kinds of electro acoustic products and more than 80 varieties. The main products are transmitter series, receiver series, piezoelectric bell series, loudspeaker series...
We insist on providing quality products to our customers.
Characteristic?? ? 4.1 Sensitivity 100±2dB ?@1KHz (0dB =20μPa) ? 4.2 Impedance: 150±20% ? (@ 1KHz) ?
1.Characteristic?? ? 1.1 Sensitivity 100±2dB ?@1KHz (0dB =20μPa) ? 1.2 Impedance: 150±20% ? (@ 1KHz) ? 2.Dimension??
1.Characteristic?? ? 1.1 Sensitivity 100±2dB ?@1KHz (0dB =20μPa) ? 1.2 Impedance: 150±20% ? (@ 1KHz)
1.Characteristic?? ? 1.1 Sensitivity 98±2dB ?@1KHz (0dB =20μPa) ? 1.2 Impedance: 150±20% ? (@ 1KHz) ?
Characteristic?? ? 4.1 Sensitivity 100±3dB ?@1KHz (0dB =20μPa) ? 4.2 Impedance: 350±30% ? (@ 1KHz)
Characteristic?? ? 1.1 Sensitivity:104±2dB SPL @1KHz (0dB =20μPa) ? 1.2 Capacitance: 50nF±30％ ? 1.3Maximum input voltage: 5V
No. Item Specifications 1. Frequency?range(Hz) 150-5000 2. Average?response?150-5000Hz 7.5-12Pa 3. AC?Impedance?at?1KHz 300Ω±20%(at?1000Hz)
Characteristic?? ? 4.1 Sensitivity 106±2dB ?@1KHz (0dB =20μPa) ? 4.2 Impedance: 1000±20% ? (@ 1KHz) ?
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What is the reason for the noise of the mobile phone's microphone?
1. Please adjust the call volume to the maximum During a call, press the volume up key to increase the call volume.
Carbon-type microphone, also known as carbon particle microphone. According to the size of the carbon particles, the carbon particle microphone can be divided into three types: low resistance,
Sensitivity: It reflects the efficiency of the sound-electric conversion of the microphone. The transmission sensitivity includes sound pressure sensitivity and sound field sensitivity.
The microphone is one of the important components of the telephone. It can convert the sound into voice current
my country's electro-acoustic industry needs "leading brother"
After years of struggle, the electro-acoustic industry has become an important force in our city's industry, and our city has become an important electro-acoustic production base in Guangdong Province.
The history, current situation and development trend of my country's electro-acoustic industry
Electroacoustic devices mainly refer to loudspeakers, loudspeaker systems, microphones, earphones, earphones, receivers, microphones, receiver sets, various communication caps and pickups, and related accessories.