(Note: Before starting it would be helpful to refer to the speaker anatomy picture to familiarize yourself with terms that will be used throughout this guide)
Step 1: Find the Problematic Driver
To test the speaker, play music through it. Music is the ideal media to test with because more frequencies will be used simultaneously, allowing you to pinpoint the blown or under-performing driver more quickly. Based on what type of driver you are testing, you should adjust your system’s equalizer accordingly:
• Tweeter: Increase the system’s treble setting
• Mid-Range: Increase the system’s mid setting
• Woofer: Increase the system’s bass setting
Run each driver test individually at a reasonably high volume (somewhere around 7 or 8 out of 10) and take note of any noticeable cracking or buzzing. Based on this test decide which driver, or possibly drivers, need to be replaced.