Subwoofer wadding. Good or bad?

[glen_jai]

I am about to fit a sub to a custom made enclosure, and was wondering what people's thoughts are on fitting acoustic wadding material to the insides of the box?

I heard that putting wadding in has the affect of making the box appear larger to the speaker. But at the same time can weaken the "punch" of the speaker.

I have an Alpine Type R 10" sub, which has a recommended sealed enclosure volume of between 0.5 - 0.8 cu ft.

My custom enclosure is sealed, with a volume of 0.6 cu ft.

Comments/advice welcome.

Cheers,
Glen

 

[dunk]

with a sealed box, wadding does increase the effective box size, and in turn this increases the damping (lowered system q) which is generally a good thing with boxes at the smaller end of the recommended size - lower q makes it more punchy but slightly quieter but only a few db - dont pack in too much, just loosely fill about 2/3 of the box

 

[glen_jai]

Great, thanks for advice Dunk. By loosely, I take it you mean, without sticking it to any sides of the box?

Cheers,
Glen

 

[dualmono21]

ideally you want some material on every panel to try and dampen some of the reflections from the backwave
a nice coating around an inch thick all the way round the box is sufficient
too much will have a negative effect on the speaker and enclosure