Vonyx MPS-B49S Quadratic Base Plate – Heavy-Duty Speaker Stand Adapter
The Vonyx MPS-B49S is a square-shaped floor base plate designed to provide a stable, level foundation for speaker stands and pole-mounted audio equipment. With a 20 mm threaded insert, it ensures a secure and rigid connection between the stand and the speaker or bracket.
49 cm square base delivers a wide footprint for superior stability on any floor surface
M20 thread insert accepts standard speaker stand poles for a universal fit
Powder-coated black finish resists scratches and blends discreetly into any stage or studio setup
11.1 kg weight provides mass and damping, reducing unwanted vibrations and resonance
What Sets the MPS-B49S Apart
Unlike smaller or round base plates, the 49 cm square footprint distributes load evenly across a large area, minimising the risk of tipping on uneven floors. The M20 thread is the industry-standard diameter for professional speaker stands, making this plate compatible with the vast majority of pole-mounted systems.
Ideal for
Live sound engineers and rental companies deploying PA systems on risers or temporary stages. Also suited for studio installations where a heavy, vibration-free base is required for floor-standing monitors or subwoofers.
Application of the Vonyx MPS-B49S
Slide the M20 pole through the centre insert of the base plate
Position the assembly on a flat, level surface at the desired location
Secure the speaker or bracket to the top of the pole using the appropriate clamps or bolts
Verify stability by applying light lateral pressure before powering on the system
Vonyx is a professional audio accessories brand specialising in speaker stands, mounting hardware, and stage equipment for live sound and fixed installations. The brand focuses on durable, spec-driven products that meet the demands of touring engineers and rental companies.
It serves as a heavy-duty square base plate for speaker stands, providing a stable foundation for PA systems, floor monitors, and subwoofers in live and studio environments.
The MPS-B49S uses a standard M20 (20 mm) thread insert, which is the most common diameter for professional speaker stand poles.
The plate measures 49 cm x 49 cm and weighs 11.1 kg, providing a substantial footprint and mass for vibration damping.
The delivery includes one Vonyx MPS-B49S square base plate with a pre-installed M20 thread insert. No additional hardware is required for standard stand poles.
Vonyx provides a 24-month manufacturer warranty on this product, covering material and manufacturing defects under normal professional use.
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