[77SunsetStrip]

For the purposes of discussion.  Consider a floor standing 3 way ported loudspeaker with solid enclosure and dense internal loose sheets of damping material.  With the knuckle test, pretty dead - just a tiny bit of resonance.  What is a reasonable approach to eliminate any enclosure resonance?

1) Add No-Rez to the largest area internal walls in combination with the loose damping material sheets?
2) Add No-Rez to all internal walls and eliminate the loose damping material sheets?

How would the port tuning be affected by adding No-Rez?

Thanks in advance.

[Hobbsmeerkat]

The ideal is to cover as much flat, internal surface area with NoRez as possible. If there isn't any bracing, or only minimal bracing, adding some additional corner braces will also help tremendously with cabinet resonance.

NoRez doesn't need much consideration for airspace/port tuning as the foam is dense enough to negate the loss of airspace from the bottom damping & adhesive layer. Plus, you can use the original loose material to cover braces and other spots where the No Rez might not fit or stick easily, like over the crossovers.