| Photo | Mfr. Part # | Availability | Quantity | Datasheet | Series | Packaging | Product Status | Technology | Type | Frequency Range | Frequency - Self Resonant | Impedance | Efficiency - dBA | Efficiency - Testing | Efficiency - Type | Power - Rated | Power - Max | Port Location | Shape | Material - Cone | Material - Magnet | Ingress Protection | Ratings | Termination | Size / Dimension | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
                 
                     
                 
                
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                    ED-30103-000SPEAKER 33OHM 102.5DB RECT Knowles  |  
                2,984 | 
                
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                     -  | 	
                
                ED | Bulk | Obsolete | Magnetic | Receiver, Balanced Armature | 200 Hz ~ 4 kHz | - | 33 Ohms | 102.50 | - | - | - | - | - | Rectangular | - | - | - | - | Solder Pads | - | 
                 
                     
                 
                
                 | 
				
                    ED-21744-043SPEAKER Z=830 OHMS PORT ON END Knowles  |  
                2,649 | 
                
                     | 
                  
                  
                     -  | 	
                
                - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 
                 
                     
                 
                
                 | 
				
                    ED-21932-029SPEAKER Z=196 OHMS PORT ON END Knowles  |  
                3,294 | 
                
                     | 
                  
                  
                    
                       Datasheet  | 	
                
                - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 
                 
                     
                 
                
                 | 
				
                    ED-21932-055SPEAKER Z=196 OHMS PORT ON END Knowles  |  
                3,522 | 
                
                     | 
                  
                  
                    
                       Datasheet  | 	
                
                - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 
                 
                     
                 
                
                 | 
				
                    BK-21612-000SPEAKER 2.36 KOHM TOP PORT 126DB Knowles  |  
                2,730 | 
                
                     | 
                  
                  
                    
                       Datasheet  | 	
                
                BK | Bulk | Active | Magnetic | Receiver, Balanced Armature | 200 Hz ~ 3.8 kHz | - | 2.36 kOhms | 126.00 | - | Sensitivity | - | - | Top | Rectangular | - | - | - | - | Solder Pads | 0.310" L x 0.220" W (7.87mm x 5.59mm) | 
                 
                     
                 
                
                 | 
				
                    BK-21839-000SPEAKER 750OHM TOP PORT 127DB Knowles  |  
                2,082 | 
                
                     | 
                  
                  
                    
                       Datasheet  | 	
                
                BK | Bulk | Active | Magnetic | Receiver, Balanced Armature | 200 Hz ~ 6 kHz | - | 750 Ohms | 127.00 | - | Sensitivity | - | - | Top | Rectangular | - | - | - | - | Solder Pads | 0.310" L x 0.220" W (7.87mm x 5.59mm) | 
                 
                     
                 
                
                 | 
				
                    BK-28384-000SPEAKER RECTANGULAR Knowles  |  
                1,222 | 
                
                     | 
                  
                  
                    
                       Datasheet  | 	
                
                BK | Bulk | Active | Magnetic | Receiver, Balanced Armature | - | - | - | - | - | - | - | - | - | Rectangular | - | - | - | - | Solder Pads | - | 
                 
                     
                 
                
                 | 
				
                    EF-21937-033SPEAKER Z=92.5 OHMS PORT ON END Knowles  |  
                1,658 | 
                
                     | 
                  
                  
                    
                       Datasheet  | 	
                
                * | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 
                 
                     
                 
                
                 | 
				
                    EC-23104-000SPEAKER 1.6 KOHM TOP PORT 111DB Knowles  |  
                3,505 | 
                
                     | 
                  
                  
                    
                       Datasheet  | 	
                
                EC | Bulk | Obsolete | Magnetic | Receiver, Balanced Armature | 200 Hz ~ 4 kHz | - | 1.6 kOhms | 111.00 | - | Sensitivity | - | - | Top | Rectangular | - | - | - | - | Solder Pads | 0.298" L x 0.170" W (7.57mm x 4.31mm) | 
                 
                     
                 
                
                 | 
				
                    CI-22762-070SPEAKER Z=51 OHMS PORT ON END Knowles  |  
                4,440 | 
                
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                     -  | 	
                
                - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |