I am just trying to understand the importance of the different treatments and effects, please share your inputs and correct me if my understanding is wrong.
- Sealing off holes in inner door skin
Main purpose is to block or prevent backwave from entering into cabin to avoid muddy sound caused by cancellation of the main front wave.
- Dampening outer skin
To reduce traffic noise
To reduce resonance caused by backwave? Or is the resonance caused by the speaker driver movement energy? Whats the main cause of resonance?
- Placing a CLD dampener directly behind driver
Whats the purpose? Is it to absorb backwave?
But CLD don't absorb wave right? It is just to dampen and reduce resonance, the backwave is never absorbed?
Does this placement of CLD in the outer skin directly behind speaker driver helps? And in what way it helps sound quality?