Thumbnail Filmstrip of 140mm KM140 Magnetic Shielding Ring' Images
Visaton - KM 140 Ring Magnet Shield
Art. No. 1329
Visaton KM140 Magnetic Shielding Ring
Ring-shaped magnets for the compensation of the stray magnetic field (magnetic shielding). The ring has to be glued on the rear pole-plate, reducing the stray magnetic field to a minimum, allowing speakers positioning of 20 cm apart from TV or computer screens.
Speakers can cause all sorts of trouble when placed near televisions (CRT). Their magnetic field can alter the colours of the screen and distort the picture. If left to long, the damage may be permanent! We have a ring-shaped magnets of 80 mm diameter for the compensation of this stray magnetic field. The ring has to be glued on the rear pole-plate (eg with strong glue - metal to metal - consult your local hardware store for the best type), reducing the magnetic field to a minimum, allowing speakers positioning of about 20 cm apart from TV or computer screens, depending on the size and field strength of the existing magnet.
The shielding magnet is suitable for many types of speakers, especially our own Visaton range, however they will still work for other brands. It is important to match the size as much as possible, too much variation will cause leakage. A smaller size will still help and will still reduce the magnetic footprint. Note that these are not suitable for speakers using neodymium magnets.
Another use for these magnetic rings is to slightly change the driver's parameters, Qes and hence Qts. This must also be kept in mind when attaching the magnetic shielding rings to drivers as an unintended consequence. For average surround sound speakers, this is usually not a concern.
Weight: 1.2 kg
Dimensions: 140 x 140 x 20 mm
AL200; AL200DV; GF200; GF250; TIW360; TIW360DS; TIW360X; TIW400; TIW400DS; W250S; W300S; WSP21S; WSP26S
Dimensions and Measurements - all dimensions in mm (approx.)