Acoustic Damping for Lavoce 18" reflex Bassline 118R Cabinet

[Trainmj]

I've built 4 Lavoce 118R 18"cabinets and I am wondering if I need to use any acoustic damping in them? I'm loading them with the Lavoce SAN184.03 speakers. If I do, what thickness, how much? The plans didn't say anything about using any damping.

[Chris Roemer]

That link doesn't work for me.
I've built subs before w/out any lining/stuffing. It depends on whether or not the box is generating any mid "noise" and if you're low-passing it below that point.

[Trainmj]

I'm going to cross it at 80hz. There are some mid resonance but the low pass will be well below that. The reason I was thinking about acoustic damping was I checked out a 18 Sound 18" reflex plan that was similar to mine and they suggested damping.