dB Technologies SN 130

It does what it's supposed to. A bit pricey though. Quality seems ok. Mounts a speaker to a mic stand. The adapter is sturdy and doesn't wobble, the rest is up to the mic stand. It's not exactly super quick to attach or remove, so you'll probably be moving these with the adapter attached, something to keep in mind.

I used four of these with the K70 speakers as compact stage monitors for my band. They worked great, with adapters from Hercules, so they just slotted onto the mic stands and clamped on until we were ready to pack down. Was a very compact set up, but since we've started doing larger venues we needed larger monitors, so I've sold on now.