Self to Ferrite MUNDORF BH71 Varnished Wire 0.71mm 4.7 mH B>
In the pure MUNDORF tradition, the BH71 ferrite chokes make use of the best materials and meet the quality standards that have made the reputation of this famous German firm.
The H series combines unusual electrical and mechanical properties that make it an excellent choice for filtering high-power bass speakers, or any other applications requiring high inductance and / or low resistance in one limited volume.
Builtthe BH71 chokes are wound with a 99.99% pure OFC 0.71mm copper wire and benefits from the "Coil Varnish" technique dear to the manufacturer.
The coils have tinned ends and are marked with the values. The inductance is measured at 25º C, the tolerance is +/- 3%.
Coated spools MUNDORF
When an electric current passes through a coil, it inevitably vibrates the different windings of the latter. The indoor microphonic effect (or the conversion of a mechanical movement into electrical oscillations) adds these oscillations to the original musical signal, altering its accuracy and integrity. Concretely, the reproduction loses in transparency and its spatialization is affected, the distortions are substantially increased. This physical phenomenon and its perverse effects on the signal are virtually eliminated thanks to the so-called "Coeur Vernie" technique developed by MUNDORF.
The varnished coils are made from a special wire. An additional layer of varnish, present on the outside of the wire, is melted rapidly by passing a large electrical pulse. By virtue of this method, the windings are interconnected, and therefore can not emit any parasitic vibrations.
L / mH (± 3%) Font>
RDC / Ohm
40 x 38mm
|BH71-5.6||5.6||0.62||40 x 38mm|
|BH71-6.8||6.8||0.70||40 x 38mm|
|BH71-8.2||8.2||0.80||40 x 38mm|
|BH71-10||10||0.87||40 x 38mm|
|BH71-12||12||0.98||40 x 38mm|
|BH71-15||15||1.15||40 x 38mm|
|BH71-18||18||1.28||40 x 38mm|
|BH71-22||22||1.49||40 x 38mm|
|BH71-27||27||1.68||40 x 38mm|
|BH71-33||33||1.93||40 x 38mm|