Tuning Device

[sma]

Hello,

I need advice about tuning device.what tuning device can improve the loudspeaker sound,since i have the mirror behind the speaker.I can't close the mirror since this is for car audio.any advice to reduce the mirror reflection use tuning device?

 

[Volenti]

I assume you have a subwoofer enclosure with a mirror on the inside?

There's a few things that could make it sound bad, most often bad enclosure design and construction.

Gives us more information, preferably pictures.