Infinity Kappa Perfect 12.1D - Car subwoofer driver - 350 Watt - 12"

They certainly don’t make them like this anymore! Aluminum cone, dual spider, dual voice coil, polished flared vented pole piece make this an incredible piece of engineering that; should be brought back because it’s so awesome!

Search as for a single voice coil. Came up as 121 not 12.1dExtremely disappointed when I received the wrong / productlisted below.

These subs bang like monkey nuts..i have them running in series 2 ohm stable..i dont know what more to say other then, people think im running 15's..nope 2 12's..The key is you have to have 2..The work perfect tandem hence the name perfect..

The sound is amazing! The bass is deep and pure! This could be the best sub I've heard! And the value is great!

I just bought 2 of these subs and hooked them up yesterday. They are not broke in yet, but they already pound incredibly hard with unbelievable sound quality. I only have my amp 1/4th of the way up, with the bass boost off, and the subs and bass set at 0 on the cd player, and with the volume at 25 out of 40, it shakes my entire car, so just imagine what it will sound like after they get broke in and i turn the amp up. These are a definite must if you are looking for that perfect mix of sound quality and SPL. When I get them broke in, i will update this review and let you know what I think.