Micro Speaker

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Micro Speaker

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  • Micro USB Speaker - PAC-SP-1003-1-P
    PAC-SP-1003-1-P : Micro USB Speaker
    Features:
    • A professionally manufacturer of micro speakers. We have various speaker, Diameter from 8mm to 120mm, Resistant from 4ohm to 600ohm.(Micro Speaker, Mini Speaker,Round Speaker, Rectangular, Oval, Square Speaker, Mylar, Paper Speaker, Speaker Box, Cabinet, Pin Speaker, Waterproof Speaker.)
    • There are over one thousand specifications now that may suit your purpose or needs. Whether you'll need speakers for refined activities activities like weddings or for animated activities fashioned after free bingo bazaars, you'll probably find the one you're looking for. Also, the complete dimensions for you to choose, we can modify the length of the pins and the wires, or even customize for your unique project.

    How to choose:

    • The factors which affect the SPL: the square measure of diaphragm, the amplitude of vibration, magnetic field intensity, power, impedance, resonant chamber, the pattern and the thickness of diaphragm, and the holes.
    • Power vs. SPL: Suppose all the conditions are the same, increasing the power dose not mean the SPL will increase as well. We need to revise the diaphragm and the sound coil to load the higher power, but it leads to lower SPL instead.
    • Dimension vs. SPL: A larger speaker can vibrate more air, therefore it provides higher SPL. In addition, the thicker speaker can give wider amplitude of vibration which also leads to higher SPL.
    • Acoustics: What we request most is how much SPL a micro speaker can output.
    • Matching: It will be better to provide the power slight higher than the rated power for the enlarged circuit
    • The volume of the resonant chamber: The general problem of the consuming products is that the resonant chambers are not big enough. We can only try to find space to enlarge the volume of the resonant chamber.
    • Sound Hole: Must be more than 1/8 of the diaphragm’s area at least.
    • Airtight: The front and back sound fields of the speaker should be separated to avoid neutralization.
    • Shock absorber: When a speaker works the vibration will also happen at the same time. In order to reduce interference, it will do good to have some material between speaker and case to absorb the shock.
    • Mounting: The speakers are usually fixed on the case. Firmly fixed is important especially for the iron housing or the large size to avoid separating in the drop test.

  • Micro Bluetooth Speaker - PAC-SP-1303
    PAC-SP-1303 : Micro Bluetooth Speaker
    Features:
    Dimension: To the micro speaker, size has decisive influence on its volume. 5mm difference of diameter might result in double or half area of diaphragm, therefore the SPL is quite different. Besides, the thicker speaker has more space to vibrate the air, and usually has bigger magnet, so it will be more powerful to push the air and emit louder sound.

    Power: Mainly refer to how much power can a speaker bear, there is no direct relation to the SPL. The speaker with larger power needs to use thicker diaphragm and sound coil to bear larger power, which will lead to lower efficiency (SPL). Therefore, according to the mechanical design, try to select a larger speaker which matches the outputting power from the amplified circuit, then the best SPL would be emitted.

    Impedance: Higher impedance can save more electricity, however, the SPL and the loaded power will go down. The reason is that we have to use thinner wire or to coil more, the front makes the power lower, and the after leads to heaviness and low efficiency.

    The material of diaphragm: Most speakers (diameter less than 50mm) use mylar diaphragms, which are easily finished, cheaper and waterproof. However, mylar diaphragm is not good at heatproof and the sound is stiff.

    The patterns of diaphragm: The speaker with concentric circles diaphragm is good for the speech sounds. Generally, the SPL is good at the frequency before 5-6 KHz, but will dramatically decrease after 6 KHz. On the other hand, the speaker with radiate diaphragm has average frequency response. Supposing other conditions are all the same, the SPL of radiate diaphragm will lower than the concentric circles one at the frequency before 6 KHz.


  • Micro USB Speakers - PAC-SP-1504-3-P
    PAC-SP-1504-3-P : Micro USB Speakers
     1. SCOPE
         This specification covers our product of micro speaker unit for mobile telephone or handset devices used.
     2. MECHANICAL LAYOUT & DIMENSIONS:
         Shown in page 3/6
     3. GENERAL REQUIREMENTS:
         3.1 Operating temperature range: -20℃~+55℃
         3.2 Standard test conditions:
              Temperature: 17℃~25℃  
              Relative Humidity: 48%~80~ (RH)
     4. ELECCTROACOUSTIC CHARACTERISTICS
         4.1.1 Test set up: Measuring conditions and procedures shown in fig (2)
         4.1.2 Impedance: 8+/-15%Ω (@1KHz) without baffler.
         4.1.3 DC resistance: 7.4+/-10%Ω
         4.1.4 Sound pressure level
                 96+/-3dB SPL @0.8.1.0.1.5 and 2.0KHz in average (OdB SPL=20uPa)
                 Measuring condition: 0.5W (Sine wave) 10cm measured with baffler shown in Fig. 1.
         4.1.5 FREQUENCY RESPONSE CURVE: AS shown in fig (3)
         4.1.6 RESPONSE FREQUENCY: 1100+/-15%Hz 22.0V. (Without Baffler)
         4.1.7 INPUT POWER (NOM/MAX):
                 0.5W/0.8W must be normal at a white noise (1W, Fo-20KHz) for one minute.
         4.1.8 AUDIBLE NOISE:
                 Must be free audible noise ( Buzzes and rattles) (300 ~8KHz frequency range, input le vel up to 2.53 Vrms)
         4.1.9 DISTORTION: Less than 10% @1KHz.0.1M.0.8W
                Frequency range, input level up to 2.53Vrms
    5. RELIABILITY TESTS:
        The sound pressure as specified shall neither deviate more than +/-3dB form the initial value, nor any significant damage after
        any of following testing.
        5.1 HIGH TEMPERATURE TEST:
              High temperature: +70+/-2℃
              Duration: 96 hours
        5.2 LOW TEMPERATURE TEST
              Low temperature: +40+/-2℃
              Duration: 96 Hours
        5.3  HEAT SHOCK TEST
              High temperature: +70+/-2℃
              Low temperature: +40+/-2℃
              Changeover time: 30 seconds 
              Duration: 1 hour
              Cycle: 100

        5.4 HUMIDITY TEST
              Temperature: +40+/-2℃
              Relative Humidity: 90%~95%
              Duration: 96 hours
        5.5 TEMPERATURE CYCLE TEST:
             Temperature: -40℃~+70℃
             Duration: 45 minutes ~ 45 minutes
  • Micro Bluetooth Speakers - PAC-SP-1510
    PAC-SP-1510 : Micro Bluetooth Speakers
    Features:
    Especially, our producing equipment of element is imported from Japan, and it is the most advanced in China at present. Moreover, the equipment and technology of manufacturing buzzer and micro speaker are top. We export products with our brand globally. We have been devoting our efforts into technology production and developing new products, together with the on-going acceleration of electronic marketing. Now, our products contain. In these areas, our company is the premier manufacturer integrating product development, producing and sales. And we also provide OEM ODM service to meet all kinds of customer's requirements. The producing processes are strictly controlled, and all members on the product line are professionally trained. The average producing capability reaches 8,000,000 per month, and we can supply technology support to our customers. We pride ourselves on offering prompt and excellent service to each and every customer. In order to realize superibusiness operations, we regard "Service, Quality, and Innovation" as our business principle, and do our utmost to reach it. We strongly believe that our company shall achieve another outstanding success with all our staff’s efforts and contributions.


  • Travel Speakers - PAC-SP-1635
    PAC-SP-1635 : Travel Speakers
    The factors which affect the SPL: the square measure of diaphragm, the amplitude of vibration, magnetic field intensity, power, impedance, resonant chamber, the pattern and the thickness of diaphragm, and the holes.
     Power vs. SPL: Suppose all the conditions are the same, increasing the power dose not mean the SPL will increase as well. We need to revise the diaphragm and the sound coil to load the higher power, but it leads to lower SPL instead.
     Dimension vs. SPL: A larger speaker can vibrate more air, therefore it provides higher SPL. In addition, the thicker speaker can give wider amplitude of vibration which also leads to higher SPL.
     Acoustics: What we request most is how much SPL a micro speaker can output.
     Matching: It will be better to provide the power slight higher than the rated power for the enlarged circuit.
  • Travel Speaker - PAC-SP-2305-P
    PAC-SP-2305-P : Travel Speaker
    Question for mechanism:
    The volume of the resonant chamber: The general problem of the consuming products is that the resonant chambers are not big enough. We can only try to find space to enlarge the volume of the resonant chamber.

    Sound Hole: Must be more than 1/8 of the diaphragm's area at least.

    Airtight: The front and back sound fields of the speaker should be separated to avoid neutralization.

    Shock absorber: When a speaker works the vibration will also happen at the same time. In order to reduce interference, it will do good to have some material between speaker and case to absorb the shock.

    Mounting: The speakers are usually fixed on the case. Firmly fixed is important especially for the iron housing or the large size to avoid separating in the drop test.


They are highly efficient and offer excellent service in the process of usage. We ensure that these Micro Speaker are manufactured by our vendors using international quality standards to offer excellent quality products to our customers.
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