I previously owned Dynaudio Focus 140's and a JL Audio F113. I think both of these are a good choice for electronic music. The Dynaudio 140's were surprisingly capable in the bass, and could play loud while remaining composed. The JL F113 is a great sub, as many owners have reported. It's fast, powerful, and musical.
Something to think about... If you're going to get two subs, you might also consider the F110. It doesn't play quite as low or quite as loud, but it is faster than the F113, and considerably cheaper. I currently own a single F110, and I don't particularly miss my F113, even when listening to electronic music. And my room is roughly the size of yours. Either way, you will be happy with the JL Audio subs.
And FWIW, I don't think the suggestion of pro gear is a bad one. As a generalization, active speakers produce very dynamic bass, and several consumer audio companies, like Dynaudio, manufacture active speakers for pro applications. But there is no reason they couldn't be used in a home environment, and given the kind of music you listen to, it is worth considering.
Good luck.
Bryon
Something to think about... If you're going to get two subs, you might also consider the F110. It doesn't play quite as low or quite as loud, but it is faster than the F113, and considerably cheaper. I currently own a single F110, and I don't particularly miss my F113, even when listening to electronic music. And my room is roughly the size of yours. Either way, you will be happy with the JL Audio subs.
And FWIW, I don't think the suggestion of pro gear is a bad one. As a generalization, active speakers produce very dynamic bass, and several consumer audio companies, like Dynaudio, manufacture active speakers for pro applications. But there is no reason they couldn't be used in a home environment, and given the kind of music you listen to, it is worth considering.
Good luck.
Bryon