Carpet tiles for lining box & volume

[Fivetide]

Just a quick one.. I have access to shed loads of carpet tiles.
They are 2 mm rubber backed and about 8mm'ish of carpet/nylon
I have read they work fine for lining, but the question is, are they that thick that they decrease volume and if so do I need to compensate for the internal size?
Going inside 12mm Birch Pine.

 

[Jerms]

They have a solid bitumen type backing, so yes they'll reduce the volume an amount if used "everywhere". Not too sure on the carpet bits but they're dense twisted fibres, ISTR.

I s'pose rule of thumb would be treat it as a 3mm or 4mm reduction per unit area covered.

They should do something of a job of mass damping big open areas if glued in strongly enough.

 

[Fivetide]

They have a solid bitumen type backing, so yes they'll reduce the volume an amount if used "everywhere". Not too sure on the carpet bits but they're dense twisted fibres, ISTR.

I s'pose rule of thumb would be treat it as a 3mm or 4mm reduction per unit area covered.

They should do something of a job of mass damping big open areas if glued in strongly enough.

Thanks Jerms that answers that 🙂

 

[horst303]

I wouldn't worry about the volume reduction , even 20% up or down will be imperceptible, it's far more important to absorb the back wave of the driver so it doesn't re excite the cone (as much), open cell foam of 20-30mm works better than a carpet tile.