Intertechnik CO30/1.20/071 | 1,2 mH | 0,57 Ω | 5% | 21 AWG

The Intertechnik CO30/1.20/071 is a premium iron-core choke coil designed to deliver clean, precise audio filtering in loudspeaker crossover networks. This 1.2 mH inductor effectively reduces hum and electromagnetic interference, ensuring that only the intended frequency range reaches each driver. Its robust construction makes it ideal for both DIY speaker builders and professional audio technicians seeking reliable, long-lasting performance in high-fidelity systems.

This choke coil is perfectly suited for use in passive crossovers, where it helps shape the frequency response by blocking unwanted signals. Whether you are upgrading an existing speaker design or building a custom set from scratch, the CO30/1.20/071 provides the accuracy needed for transparent sound reproduction. It is particularly effective in low-pass filters for woofers, where its iron core offers high inductance in a compact form factor.

Technically, the coil features a 1.2 mH inductance with a tight ±5% tolerance, ensuring consistent performance across units. The DC resistance is a low 0.57 Ω, minimising power loss and heat build-up. Wound with 21 AWG wire (0.71 mm diameter), it offers excellent current handling. The core measures 19 mm in diameter, with an outer diameter of 30 mm, a total height of 22 mm, and a winding width of 17.5 mm. A central hole of 5 mm and a recess diameter of 17 mm facilitate easy mounting.

With its precise specifications and durable build, this Intertechnik choke coil is a dependable choice for any serious audio project, delivering clear, interference-free sound.