Is 1600W enough for a small club?

1600W is a peak rating, and peak figures overstate real output. For a small club or a mobile DJ setup it should reinforce a pair of tops well, but treat it as one sub in a modest system, not a stadium rig.

Does it work with non-Sound Town tops?

Yes. It is a self-powered sub with its own amplifier, so any mixer or powered tops with a sub output can feed it. Check the crossover and input options on the rear panel before you buy.

Can I stream music to it directly?

No. It has no AirPlay or Spotify Connect. You feed it from a mixer, DJ controller or system processor through its audio inputs.

How many people does it take to move?

An 18-inch powered sub is heavy, so plan on two people for stairs and loading. A dolly or wheeled case makes mobile work much easier.

Should I buy one or two?

Two subs give more even low-end coverage and let you run them in a cardioid or stacked arrangement. Start with one if your room is small, and add a second when you need more headroom.