I didn't like my old sub box, so I decided to make something myself to suit my Stagea & the sub. Sub is a Pioneer TS-W306C. I wanted a sealed box, easier for me to make and simple. I make Homer Simpson look like a master craftman when it comes to building things.
Got 18mm MDF (2400 x 1200) from Bunnings. After my terrible attempt to cut the MDF with a jigsaw, I took it back to Bunnings to get cut, they did a far better job than me. Put it together with Aquadhere glue & 25mm wood screws. Sealed the edges inside the box with Sikiflex to ensure the seal. Bought polyfill from Spotlight to put in the box, stuck it in place with Kwik Glue. Got grey carpet from Jaycar to cover the box in, almost matches the carpet in the Stagea. Hard part was getting the carpet to stick, the Kwik Glue did do the job a little, I ended up using craft glue that my Mrs had.
Put it in the Stagea this arfternoon once it was done, & it sounds a lot better than the old box I had. The new box has a volume of 1.7 cubic feet, dimensions are 880mm width, 220mm depth & 342mm height. The old box had a volume of just over 1 cubic feet.
Pics attached of the new box.
In all, I spent close to $150 buying all the stuff I needed, but I am happy with the end result.
Cheers,
Adam