Here are links to some Speaker Enclosure designs
Enclosure for Eminence BETA-10CX
Enclosure For Eminence BETA-8CX
Micro-perforated Acoustic Absorber
Links to Ear Bud Tests
Apple Ear Bud with foam & silicone tips
Links to Microphone Tests
WM61A Electret Microphone Model
19 Element and Single Element Microphone
Compare test setups and 12" mic to Earthworks M23
19 Element Mic Test Using Yamaha Mixer
Amplifiers