QIY Subwoofer question...

[Keith from Canada]

I currently have an Adire Shiva 12" sub mounted inside of an 88.5 liter sealed enclosure (Q=0.6) that was originally used for an equal amount of music and movies. This design worked very well for both however, it did lack a little punch when it came to movies. After some remodelling, my current set-up will now be used almost entirely for HT and I am hoping to add some of the punch back to the sub by building another box.

My question is, would I be adding more "punch" to my HT bass if I went down to a 54 liter sealed enclosure with Q=.707?

Many thanks!

[poneal]

I am definitely not a subwoofer expert but have read that in a sealed enclosure a Q of .707 gives the most realistic rendering of a recording. I have also read that if you want that hard hitting HT bass you should use a vented box with a Q of around .9. I am currently building a sealed enclosure box with a Q of .75. I will let you know how it sounds with home theater when the project is complete.