I'm running my Helix Floor thru a pair (stereo) of 108s'. The 108's are sitting on the floor. PLENTY of bass. I've read some people prefer them lifted up in the air to lessen the bass. I've had to turn down the bass on some of my presets because it can be too much. I don't gig, just a bedroom wanker. Someone else posted about the idea of buying the 108s from a store where you can return them - GC, SweetWater (would have to pay shipping back). Highly recommended all around!