I’m in the process of building mine along with the PE sealed knock down 4cube box. Looking for recommendations for the amount of polyfill you’re using. It recommends 4lbs, but I’ve read in other threads on the web 5lbs. Now I can’t find them to confirm. They also suggest 4lbs for the 15 as well. Thoughts and suggestions appreciated.
Will be paired with a crown 1502, and a Marantz sr5012. Mostly HT, and occasionally music.