Tab S6 Lite tablet speaker reflector and case fixer

First thing is galaxy s6 lite tablet's case fixer. You need this thing to use cheap cases because they have volume and shutdown key pressing stuck problem. This thing stops that issue.

Second thing is tablet pc speaker reflector, works like sound amplifier. I need it when the background is noisy, it reflects the sound directly to front. I didn't try standart (no case) version yet, but I draw it according to measurements.

p.s. : the reflector boosts treble band, makes it brighter.