Originally posted by Master Yoda:
The only coment I have is be careful using the tape I had a local guy use the foil tape inside his whole box and it raised the peak Hz of his box by almost 5HZ! I beilve that had more to do with the real tunning of the box and that the mdf slowed down the air flow lowering the peak of the box. So when the air flow increased it raised the peak of the enclosure.
Thats the reason why you gain with resin sometimes 1db or so..... Because it changes your tuning, but this also can have bad result