K&M Stands 21441 Ring Lock Adapter Sleeve

Secure Speaker Mounting for Professional Audio Setups
The K&M 21441 Ring Lock Adapter Sleeve is designed to give you a tight, reliable connection between your speaker and stand. Built for performance environments where stability matters, this adapter sleeve fits speaker stands with a standard 35 mm diameter and ensures your loudspeakers stay put—even during high-output sessions.

Built-In Locking System Ensures a Firm Hold
This adapter sleeve features an integrated locking screw system that holds your speaker in place without movement. Whether you're in a studio, on stage, or setting up a mobile PA system, you can count on the K&M 21441 to deliver a solid and secure speaker mount every time.

Ring Lock Design with Patented Expanding Mandrel System
The standout feature of this model is its patented Ring Lock expanding mandrel mechanism. Unlike generic sleeves that rely solely on tension or friction, this system expands to fit the speaker cabinet precisely. The result is a tight grip that prevents unwanted play between the speaker and the tube, keeping your sound focused and steady.

Vibration-Free Performance Through Plastic Splints
Audio clarity is protected by moveable plastic splints inside the adapter. These flexible inserts eliminate vibration transfer between the speaker and the stand. That means better fidelity and fewer unwanted artifacts—perfect for critical listening spaces and live performance setups alike.

Compact Height with a Professional Finish
Measuring just 10.62 inches in height, the K&M 21441 stays unobtrusive while still delivering industrial-grade performance. The black finish blends easily with most speaker and stand configurations, keeping your rig clean and professional-looking.

Compatible with a Wide Range of Speaker Gear
Thanks to its 35 mm inner diameter and intuitive locking system, this sleeve is compatible with countless loudspeaker models across brands. It's ideal for rental companies, installers, engineers, and AV professionals who need equipment that adapts easily to different gear.