I grabbed the 10-inch subwoofer and I'm really totally thrilled. The sound is simply outstanding: The bass comes extremely deep and still sounds crystal clear, without booming or distorting.

Thanks to Klippel optimization, every tone sounds clean and powerful. The massive aluminum die-cast basket provides a really stable construction and prevents disturbing vibrations – even at really high volumes, everything stays top.

The IMPP cone and long-stroke rubber surround provide solid depth and hold up even under intense use. I've never experienced such powerful and precise bass before.

Anyone needing an upgrade for their sound system gets real power here in a stylish design. This thing delivers an impressive performance and definitely sets new standards in terms of depth, clarity, and pressure.

Absolutely fantastic 10-inch driver. I needed it as a replacement for my broken one, and the mounting holes fit perfectly. Connect the cables, screw it in – done! The bass is really powerful, and the price is top.

Mega good piece, I'm really satisfied and would order again immediately!

I find them weaker than the originally installed Magnat speakers, which even cost about a third less. I used the Ground Zero as a replacement in my bandpass enclosure after the original foam surround broke. Since I have three other functioning subs, I could compare well: The sound is okay, but the punch and depth could be stronger.

They have rubber surrounds that are usually much more durable and sound quite good. One must not forget that these are the more affordable Ground Zero models. All in all, solid speakers with a fair price-performance ratio, but there are definitely better products on the market. Honesty is important to me; otherwise, such a review would be pointless.

The design looks really stylish and the sound is simply amazing.