Coils

Mundorf BS100 feron core coil, 1.2mH ±3%, 0.19ohm, 1mm wire OFC-copper 99.99% with backed varnish wire, feron core (iCore), 66x20xH20mm

Mundorf's BS series uses a solid 99.99% OFC copper round conductor stabilized by varnish, wrapped around a rod-shaped iron-silicon alloy core. Each end of the stick is fitted with a hole for attachment.

Air core coil Mundorf BL140, 2mH ±2%, 0.43ohm, Ø29xL70mm, with backed varnish

The BL series from Mundorf uses the same coils as the L series but with the addition of a stabilization varnish considerably reducing electromagnetically induced vibrations. If your passive filter concerns a high-end speaker, the choice of a BL coil instead of an L coil is a relevant choice because it directly impacts the listening quality.

Air core coil Mundorf L200, 3.9mH ±2%, 0.38ohm, 105x93xH79mm

Mundorf's L series uses a 99.99% solid OFC round copper conductor, specially developed for high quality filtering. The winding stand is made of glass fiber reinforced plastic. The L-series coil is the standard for quality passive filtering.

Air core coil Mundorf BL100, 3mH ±2%, 0.98ohm, Ø28xL58mm, with backed varnish

The BL series from Mundorf uses the same coils as the L series but with the addition of a stabilization varnish considerably reducing electromagnetically induced vibrations. If your passive filter concerns a high-end speaker, the choice of a BL coil instead of an L coil is a relevant choice because it directly impacts the listening quality.

Mundorf BS100 feron core coil, 15mH ±3%, 0.82ohm, 1mm wire OFC-copper 99.99% with backed varnish wire, feron core (iCore), 84x33xH33mm

Mundorf's BS series uses a solid 99.99% OFC copper round conductor stabilized by varnish, wrapped around a rod-shaped iron-silicon alloy core. Each end of the stick is fitted with a hole for attachment.

iCore feron coil Mundorf BS140, 3.3mH ±3%, 0.19ohm, 96x29xH29mm

Mundorf's BS series uses a solid 99.99% OFC copper round conductor stabilized by varnish, wrapped around a rod-shaped iron-silicon alloy core. Each end of the stick is fitted with a hole for attachment.

Air core coil Mundorf L200, 12mH ±2%, 0.76ohm, 123x108xH89mm

Mundorf's L series uses a 99.99% solid OFC round copper conductor, specially developed for high quality filtering. The winding stand is made of glass fiber reinforced plastic. The L-series coil is the standard for quality passive filtering.

Mundorf BS180 feron core coil, 2.2mH ±3%, 0.1ohm, 1.8mm wire OFC-copper 99.99% with backed varnish wire, feron core (iCore), 106x34xH34mm

Mundorf's BS series uses a solid 99.99% OFC copper round conductor stabilized by varnish, wrapped around a rod-shaped iron-silicon alloy core. Each end of the stick is fitted with a hole for attachment.