K&M 21447 SHORT "RING LOCK" CONNECTING TUBE WITH M20 BOLT
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Information
Information
Manufacturer Information
K&M
https://www.k-m.de
contact@k-m.de
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Safety manager:
Algam SAS
Email: contact@algam.net
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A short tube designed for satellite-on-subwoofer systems
The 21447 is a short steel link tube designed to efficiently connect a satellite speaker to a subwoofer equipped with a threaded socket. Its "Ring Lock" concept aims for a tight and stable fit, particularly useful when seeking a clean installation with minimal vibrations and quick assembly/disassembly.
For whom and for what: sound reinforcement, monitors, compact installations
This tube is intended for sound reinforcement users who want to install a speaker above a subwoofer while maintaining a reduced height. It is suitable for both mobile setups (performances, DJs, events) and fixed installations requiring a reliable connection between the speaker and the support, with an appropriate load capacity.
Stability, tightening, and ease of use
"Ring Lock" expansion mandrel: firm and play-free hold
The upper part integrates a unique and patented expansion mandrel designed to achieve a tight fit of the speaker on the tip. The goal is to limit mechanical play, improve the feeling of stability, and secure the hold during use.
Low-resonance connection and simple handling
The plastic expansion jaws contribute to a low-resonance connection between the speaker and the tube. The tightening ring facilitates handling, making installation faster, more comfortable, and more consistent, even during repeated assemblies.
M20 base: direct screwing onto subwoofer
The lower part is equipped with an M20 threaded bolt allowing the tube to be screwed into a threaded mounting plate of the subwoofer (type 24116). This screwed attachment provides additional security compared to a simple slip fit, particularly appreciated in satellite-on-sub configurations.
Technical specifications
| Multiple stand | No | Support | for speaker |
| Security/locking | Yes | Color | Black |
| Category | speaker stand | Maximum supported weight | 35 kg |
| Use | PA speaker | Weight | 0.63 kg |
| Material | plastic - steel | ||
| Intended use | sound reinforcement speaker | Max. load capacity | 35 kg |
| Weight (kg) | 0.63 kg | Upper tip | 35 |
| Height | 245 mm | Lower tip | M20 bolt |
Questions frequently asked
Is this pole compatible with an M20 mount subwoofer?
The M20 threaded bolt base screws directly into a threaded mounting plate on the subwoofer, such as type 24116. The speaker must have a 35 mm top socket.
What is the maximum load for this K&M 21447 pole?
The maximum load capacity specified is 35 kg.
How does the Ring Lock system work?
The Ring Lock expansion collar located on the top end ensures a tight fit into the speaker. Its plastic jaws limit coupling resonances. The locking ring facilitates repeated assemblies.
How much height does this pole add between the subwoofer and the speaker?
With a height of 245 mm, this pole keeps the speaker at a low height above the subwoofer. This setup is suitable for compact satellite systems.
Is the pole suitable for mobile sound reinforcement installations?
Made of black steel, this mount weighs 0.63 kg. The M20 threaded connection provides a secure link between the subwoofer and the speaker.
