| TB-01 | Stability of amplifier systems connected to the BL microphone | Tech Specs | 
                        
                            | TB-02 | Receiver Testing: Maximum current modulation (MCM) | Technical Bulletin | 
                        
                            | TB-03 | Effects of sound inlet variations on microphone response | Technical Bulletin | 
                        
                            | TB-04 | Soldering transducer leads | Tech Specs | 
                        
                            | TB-05 | Walk induced head vibrations and hearing aid design | Tech Specs | 
                        
                            | TB-06 | Effects of acoustical termination upon receiver response | Technical Bulletin | 
                        
                            | TB-07 | Effects of source impedance upon receiver response | Technical Bulletin | 
                        
                            | TB-08 | Microphone and Balanced Armature Receiver Handling and Environmental Guidelines | Technical Bulletin | 
                        
                            | TB-09 | BT condenser microphone 2-wire application notes | Technical Bulletin | 
                        
                            | TB-10 | BW-1789 application notes | Tech Specs | 
                        
                            | TB-11 | Effects of variation of supply voltage on the sensitivity of the BL microphone | Technical Bulletin | 
                        
                            | TB-12 | Application notes for BL series microphones | Technical Bulletin | 
                        
                            | TB-13 | Effects of variation of the supply voltage on the sensitivity of the BT microphone | Technical Bulletin | 
                        
                            | TB-14 | The effect of acoustic damping plugs on receiver response | Technical Bulletin | 
                        
                            | TB-15 | XL-9073 probe microphone kit application notes | Tech Specs | 
                        
                            | TB-16 | Electronics response shaping of directional microphones | Technical Bulletin | 
                        
                            | TB-17 | Broader band BK application notes | Tech Specs | 
                        
                            | TB-18 | CB application notes | Tech Specs | 
                        
                            | TB-19 | Vibration sensitivity of Knowles microphones | Technical Bulletin | 
                        
                            | TB-20 | Wideband receiver application bulletin | Technical Bulletin | 
                        
                            | TB-21 | Application of EL Directional Microphones | Technical Bulletin | 
                        
                            | TB-22 | Magnetic leakage for receivers | Technical Bulletin | 
                        
                            | TB-23 | Mounting application notes | Technical Bulletin | 
                        
                            | TB-24 | ESD and low frequency voltage noise related issues to the Improved EM microphone | Tech Specs | 
                        
                            | TB-25 | Improved EM microphone | Tech Specs |