Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer  | 
		
| Configuration | Dual  | 
		
| Diameter / length [mm] | 7.87  | 
		
| Width [mm] | 4.09  | 
		
| Thickness [mm] | 5.23  | 
		
| DC resistance [Ohm] | 8.8  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 120  | 
		
| Vented | Yes  | 
		
Dual Woofer
Delivers warm, rich bass as part of a multi-driver system.
Very high drive capability for low distortion at typical levels.
Dual element construction for high efficiency and low mechanical vibration.
Customization possible (impedance, damping, porting, etc.)
RoHS compliant.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer  | 
		
| Configuration | Dual  | 
		
| Diameter / length [mm] | 7.87  | 
		
| Width [mm] | 4.09  | 
		
| Thickness [mm] | 5.23  | 
		
| DC resistance [Ohm] | 8.8  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 120  | 
		
| Vented | Yes  | 
		
Dual Woofer
Delivers warm, rich bass as part of a multi-driver system.
Very high drive capability for low distortion at typical levels.
Dual element construction for high efficiency and low mechanical vibration.
Customization possible (impedance, damping, porting, etc.)
RoHS compliant.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer  | 
		
| Configuration | Dual  | 
		
| Diameter / length [mm] | 7.87  | 
		
| Width [mm] | 4.09  | 
		
| Thickness [mm] | 5.23  | 
		
| DC resistance [Ohm] | 8.8  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 120  | 
		
| Vented | Yes  | 
		
Dual Woofer
Delivers warm, rich bass as part of a multi-driver system.
Very high drive capability for low distortion at typical levels.
Dual element construction for high efficiency and low mechanical vibration.
Customization possible (impedance, damping, porting, etc.)
RoHS compliant.