| TB-01 | Stability of Amplifier Systems Connect to the BL Microphone | Technical Bulletin |
| 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 | Technical Bulletin |
| TB-05 | Walk Induced Head Vibrations and Hearing Aid Design | Technical Bulletin |
| 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 | Technical Bulletin |
| TB-11 | Effects of Variation of Supply Voltage on the Sensitivity of 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 Microwave | Technical Bulletin |
| TB-14 | The Effects of Acoustic Damping Plugs on Receiver Response | Technical Bulletin |
| TB-15 | XL-9073 Probe Microphone Kit Application Notes | Technical Bulletin |
| TB-16 | Electonics Response Shaping of Directional Microphones | Technical Bulletin |
| TB-17 | Broader Band BK Application Notes | Technical Bulletin |
| TB-18 | CB Application Notes | Technical Bulletin |
| 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 Receiver's | Technical Bulletin |
| TB-23 | Mounting Application Notes | Technical Bulletin |
| TB-24 | ESD and Low Frequency Voltage Noise Related Issues to the Improved EM Microphone | Technical Bulletin |
| TB-25 | Improved EM Microphone | Technical Bulletin |
| TB-26 | The Use of BU Series Accelerometer | Technical Bulletin |