Low bass that shakes the floor.

No limiter .Port noise

For the 270 I paid for this it's great. But i will have to get a sub with some kind of built in compressor.This thing can bottom out pretty easy and the port can make some funny noises.Dont use this with bookshelf speakers it's not for that.
At first I was using it through the lfe channel output.But I got tired of overdriving it.So I hooked it up to lr preamp outs and told the reciever there is no sub.My 8 inch towers are set to large.So the sub and the towers share the bass and I crossover at 60 hz or so.Kinda the best of both worlds.
And yes,there is no such thing as"fast" bass.Some subs perform better at higher frequencies.A strong peak at 80 to 100 hz will make kick drums and such have a "tighter" feel.