Home
       About us
      Products
      Message board
      Contact us
      
                    
      
                    

                    
    
                      
    
                    
    
    
                    Ours is one of the earlist special factories,which manufacture sound equipments of message astir and buzzer,etc.Our factory has been dedicated to preparing opening up and manufacturing sound equipments for years and has manufactured all kinds of products with high quality that meet the consumers'needs.


                    
    
    
  
                    
  
  
                    
  
                    
    
                    
     
                    
        
                    
          
                    Product List
                    		
        
                    
        
                    
          
        
                    
        
                    
          
                    Product Search

                    		
        
                    
        
                    
          
                    
            
                    
              
                    
      
                    
        
                    Porduct：   
          
          
                    
          
                     
                    
        
                    Keywords：
          
         
                    
         
                     
         
                    
         
                    
           
        
                    
      
                    
       
                    		
            
                    
            
                    
              
            
                    
            
                    
              
            
                    
          
                    		
        
                    
      
                    
    
                    
    
                    
      
                    
        
                    
          
                    Products
                    		
        
                    
        
                    
          
                    
          
                    Category：Speaker
                    
          
          
                    
            
                    YDB40-1
                    
            
            
                    
            
            
                    

                    

                    Mylar Speaker
                    DIMENSIONS Unit:mm
                    TECHNICAT TERMS
                    

                    

                    


                    


                    Type 　　　　　　　　　　　　　　　　　(Ω)
                    		


                    YDB40-1
                    

                    


                    Rated Impedance　　 　　　　　　　　　(Ω)
                    		


                    8±20%
                    

                    


                    Rated(Max.) Power 　　　　　　　　　　(W)
                    		


                    0.25(0.4)
                    

                    


                    Resonance Frequency 　　　　　　　　　(Hz)
                    		


                    500±20%
                    

                    


                    Rated Freq.Range 　　 　　　　　　　　(Hz)
                    		


                    f0～10000
                    

                    


                    Sound Pressure level at 0.25W 0.5m　(dB)
                    		


                    80±3
                    

                    


                    Operating Temperature　　　　　　　　(℃)
                    		


                    -40～＋80
                    

                    


                    Size L×W×H 　　　　　　　　　　　　　(MM)
                    		


                    42.5×39.6×15.4
                    

                    


                    Cone Material
                    		


                    Transparent Mylar
                    

                    


                    Frame Material
                    		


                    ABS
                    
            
                    [关闭本页]
                    
          
                    
        
                    		
        
                    
      
                    
    
                    
  
                    

                    
  
                    
    
                    
      
                    
        Home  |  About us  |  Products  |  Message board | Order online  |  Contact us|Admin
      
                    
      
                    
        Changzhou Dijiu electronic Componets Co.,Ltd All rights reserved
   Tel：0519-86461588  Fax：0519-86461282
                    
Add：Changzhou Wujin High-tech Zone No. 52 Temple Road
                    		
      
                    
    
                    
  
                    

                    

500彩票登录网址