Thanks for the reply!

I'm planning to use your 2 Pi kits. It'll be fun to try them as an open baffle speaker first and then get some boxes put together.

I won't be changing your plans for building the 2 Pi boxes. You have been doing this sort of thing for a long time and it really showed in the Abraxas room at the audio festival. Experimenting may be something to think about in the future but for now it'll be fine following somebody else's proven recipe for speaker building.

Guess the real question is what is the best material to make the 2 Pi towers? Your speaker building plans mention 5/8" particle board and 3/4" mdf material. Is the heavier, thicker material more appropriate for speakers or does the particle board sound better?

Many thanks!