BALANCED ARMATURE DRIVE UNIT M A N U F A C T U R E R E S

Transcription

1 BALANCED ARMATURE DRIVE UNIT M A N U F A C T U R E R E S JSUN PRECISION TECHNOLOGY CO., LTD 1. 公司简介 COMPANY PROFILE

2 1. COMPANY PROFILE JSUN PRECISION TECHNOLOGY CO., LTD. was founded in 2002, and located in the beautiful harbor city - Xiamen. It is a private high-tech enterprise engaged in electronic product development and manufacturing, mold design and manufacturing, and stamping molding production. Featuring sophisticated manufacturing equipment and rich technical strength, the company was listed in NEEQ in July is an independent department of JSUN Group, which engages in development and manufacture of balanced armature. Thanks to the senior professional and technical personnel, persistent R&D design, precision parts manufacturing, and scientific assembly process, the company has achieved production in high-quality balanced armature speakers. 2. PRODUCT INTRODUCTION Moving iron speaker, also known as micro-balanced armaturere drive unit, is a precision acoustic device. Coil Pin Diaphragm Balanced Armature Drive Unit Voice Magnet ARMATURE

3 2.1 How it works: A sound coil movement promotes the diaphragm coil through the armature movement (different from the ordinary speaker (moving coil speaker)). MOVING COIL MOVING IRON CONDENSER 2.2 Moving iron speaker features: small size, high fidelity, high sensitivity, low power consumption. Its manufacturing relies on high-precision production equipment and unique technology Moving iron speaker is better than moving coil speaker at sound insulation. Due to the larger area of the moving coil unit and the requirement for more space and air to engage in vibration in the process of sound production, then the phenomenon of leakage cannot be effectively controlled; on the other hand, the moving iron speaker can effectively reduce the volume of the part in the ear, and put part into the deeper ear canal. As the geometry of the ear canal is round, and much simpler than that of the auricle. Therefore, the silicone sleeve with soft texture is able to provide better sound insulation and leak-proof sound effect, compared to traditional earplugs.

4 2.2.2 The sensitivity of moving iron speaker is higher than that of moving coil speaker. The main reason is that the structure of moving iron speaker is almost a closed container. Due to the small load, it can be driven by a micro current. With the high sensitivity, moving iron speaker has a better transient performance; in addition, it is far better than moving coil speaker in many aspects, including the dynamic performance of music, instantaneous details of the performance, and sound density The Frequency Response Curve of moving iron speaker is more stable. The Frequency Response curve of moving coil speaker will appear some audible changes under the different temperatures, humidity and usages. Moving iron speaker shows good stability, so that the sound quality is more stable and reliable, and difficult to be altered. A primary key reason of that is the moving iron speaker is made of metal material by precision mold forming. The vibrating diaphragm of a moving coil is generally combined with coil through glue. Therefore, there are many affecting factors including individual differences. Therefore, compared with the moving coil speaker, moving iron speaker's electro-acoustic performance is way more stable.

5 3. PRODUCT CHARACTERISTICS 3.1 Speaker Mode Frequency Response 3.2 Characteristic Parameter SENSITIVITY db ±4 1KHz IMPEDANCE Ohm ±15% Ohm 1KHz 500Hz ±10% MAX DISTORTION % FREQ Hz ELECTRICAL TEST CONDITIONS AC DC ma ma Sound Pressure Level:(SPL, db) 0.120Vmrs@1000Hz:106±3 db FREQUENCY ~ ~ ~ 5000 MIN MAX

6 3.4 Rated Impedance:(Ohm) FREQUENCY 200Hz 500Hz 1000 Hz 3000 Hz 5000 Hz IMPEDANCE 39Ω 50Ω 76Ω 240Ω 350Ω 3.5Total harmonic FREQUENCY 200Hz 500Hz 1000 Hz 3000 Hz 5000 Hz DISTORTION 1.7% 2.98% 2.86% 0.06% 0.26% 3.6 Rated Input Power:1mW 3.7 Max Input Power:5mW 3.8Polarity: The solder spot on the right side of the unit is the positive pole ("+") 4. TEST PARAMETERS 4.1 Mechanical Vibration Test Operation after dropped onto the slope surface (1800mm High, 25 ) with output <3dB 4.2 Temperature and Humidity Cycling Test 65 /95%RH,Continue72H:No rust phenomenon, Output <3dB 4.3 Salt Spray Test Temperature 35,Salinity5%,Test time48h: No obvious external oxidation or rust

7 5. APPLICATION 5.1 Hearing Aids 5.2 In-ear Headphones 5.3 Stage Monitoring Headphones 5.4 Bluetooth Headsets

8 ADD:4/F,No.52 Huli Street, Huli District, Xiamen, Fujian, China P.C.: FAX: TEL: CONTACTOR:Mr.Xu MOB: