Beware! Having owned the Elemental Designs 7Kv.2, I can say from experience that these speakers are overpriced, low quality paper weights. I installed it in the stock sub enclosure as a sealed (non ported) enclosure. The sound was horrible. I was so mad, I destroyed it before I through it in the trash. I replaced the ED7Kv.2 with a Kicker sub. The stock sub enclosure is not a bad enclosure when sealed with the right sub. And that's my two cents.