brother, this can be used for Bass sound fine tune, pls refer to your speaker manual for details. in general, put 海綿 into speaker can put down the Bass sound. So, if u feel the Bass sound is much then your expectation (e.g. u feel BOOM), u can put 海綿 to put down the Bass
I am also a new hand in HiFi, just play ~1/2 year.
I learn this from my speaker manual only. Yep, put 海綿 will 減低個 Bass. So, just put it IF u feel BOOM BOOM. U can test it with same CD & volume level to see which Bass condition is good for u.
Hope can share more HiFi info. together from now on
Have you used the better 釘腳 under your speaker and CD PLAYER? Those parts are need. Those can help to improve the BOOM sound and must make the sound stage clear more. musical you can choose 木釘 but Don't use China made 木釘 with cheap price, China made only can be accepted is 樂林, but also expensive,
Better choice is SoundMechanic, or famous is Black Diamond Racing, for CDP is good enough, it better than Golden Sound
My find out is that when use the sponge to block the pot, even though can reduce low bass but dynamic ma reduce as the speaker can't breath well after block.
when remove it, bass and dynamic increase, if got boom-boom then can increase distance from the back wall.
another alternative will be quite complicated --> add sand bag inside speaker, twisted the cable connected to tweeter & woofer, fill in the yellow fibre/sponge in the speaker box. It take time for you test wht the amount of fibre sponge require but it is worthful if u really 12 improve your clearity, tighter your bass. I'm not sure how's the result of your speaker but at least the result very good for Monitor Audio bronze 3 & AE AEGIS 1.