Very accurate bass. Not at all boomy like so many other subs I've listened to or owned. The quake fills out the bottom in a very musical way and completely compliments the ACI Emeralds I matched them with to use as my computer's music system. Even MP3 tracks sound good on the Quake. Crossover frequency, volume and polarity controls work well and really don't leave much to be desired. Make no mistake, the Quake can rock, but at the same time it has that musical tone only found in better speakers. The Quake is as good as many subs costing twice the price, and better than anything in its price range IMHO.

The Quake is larger than I thought, but then it has two 8 inch cones instead of one 10 or 12. Not a real problem.

Excellent choice for small to medium size rooms. I highly recommend this product. Great service from the folks at ACI too.

Similar Products Used:

Velodyne, Definitive Technology, Paradigm, all models in the same price range.

Excellent, responsive,sounding subwoofer, especially considering the price

Volume control is a little touchy, would help if there was a larger control knob on it.

I was looking for a decent sounding satilite/subwoofer system for under $1k. I managed to find the perfect set with an ACI Quake combined with NHT Superzero's. They complement each other perfectly. The Quake produces amazing bass, powerful and low, without being muddy or muffled. It responds quickly and sharply, like a high quality subwoofer should. Ordering direct through ACI was painless and delivery was prompt. Overall I would recommend this subwoofer for anyone looking for outstanding quality at an affordable price.