PA Cabinets

[Clive Hugh]

I was just installing a top hat in the bottom of my pa cabinets for a stand and on looking inside found there is no lining in the cab or round the speakers. I have always been under the impression that this improves the efficiency and sound? And have always used it when making cabs, never done it without. Any comments?
Clive

[barefoot]

Yeah, not lining the interior walls sounds like a pretty bad idea to me. For ported speakers the main reason for lining the walls to reduce standing waves that especially color the upper bass/lower midrange.

You can easily do it yourself. Heavy foam carpet pad would definitely help. Wool carpet pad would even be better. There are more expensive materials like these http://www.partsexpress.com/webpage....D=37&sm=1&so=2 that would be good, but just the carpet pad will improve things a lot. Just keep any material you put in there about 10cm or so away from the ports.

barefoot

[Clive Hugh]

Thanks, that reinforced what I had always done without thinking why, I guess Iv'e just got a new project.
Clive