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See Product Specifications
| Part Number: | HE-31751-000 | 
| Category: | Audio Products | 
| Subcategory: | Speakers | 
| Manufacturer: | Knowles | 
| Packaging: | Bulk | 
| Product Status: | Obsolete | 
| Technology: | Magnetic | 
| Type: | Receiver, Balanced Armature | 
| Frequency Range: | 50 Hz ~ 10 kHz | 
| Frequency - Self Resonant: | - | 
| Impedance: | 118.1 Ohms | 
| Efficiency - dBA: | 113.50 | 
| Efficiency - Testing: | - | 
| Efficiency - Type: | Sound Pressure Level (SPL) | 
| Power - Rated: | - | 
| Power - Max: | - | 
| Port Location: | Top | 
| Shape: | Rectangular | 
| Material - Cone: | - | 
| Material - Magnet: | - | 
| Ingress Protection: | - | 
| Ratings: | - | 
| Termination: | Solder Pads | 
| Size / Dimension: | 0.373" L x 0.283" W (9.46mm x 7.18mm) | 
| Height - Seated (Max): | 0.282" (7.16mm) |