Air core coils
Intertechnik AT92/470/132 | 4.7 mH | 0.81 Ω | 3% | 16 AWG
LU32/26-AG/0.27 | 0.27 mH | 0.35 Ω | 3% | 20 AWG | True Silver Coil
E106/033/300 | 0.33 mH | 0.06 Ω | 3% | 9 AWG | Choke Coil
Intertechnik TRI92/0.56/0.80 | 0.56 mH | 0.12 Ω | 1% | 20 AWG
Intertechnik TRI92/2.7/0.50 | 2.7 mH | 0.632 Ω | 1% | 24 AWG
LU32/26-AG/0.24 | 0.24 mH | 0.33 Ω | 3% | 20 AWG | True Silver Coil
Intertechnik LU62/22.0/071 | 22 mH | 5.78 Ω | 3% | 21 AWG
Intertechnik LUT32/033/10 | 0.33 mH | 0.32 Ω | 3% | 18 AWG
Intertechnik Air-core Coil – 0.68 mH | LU25 | DCR 0.45 Ω | Cu 0.45 mm | ±5.0%
LU32/26-AG/0.18 | 0.18 mH | 0.28 Ω | 3% | 20 AWG | True Silver Coil
Intertechnik TRI92/3.3/0.50 | 3.3 mH | 0.71 Ω | 1% | 24 AWG
LU32/26-AG/0.15 | 0.15 mH | 0.26 Ω | 3% | 20 AWG | True Silver Coil
Intertechnik TRI92/0.68/0.80 | 0.68 mH | 0.14 Ω | 1% | 20 AWG
Intertechnik TRI92/1.50/0.60 | 1.5 mH | 0.33 Ω | 1% | 23 AWG
E106/039/300 | 0.39 mH | 0.06 Ω | 3% | 9 AWG | Choke Coil
Intertechnik LU25/012/060 | 0.12 mH | 0.32 Ω | 3% | 23 AWG
Intertechnik Air-core Coil – 0.03 mH | LU25 | DCR 0.20 Ω | Cu 0.50 mm | ±5.0%
E130/047/300 | 0.47 mH | 0.06 Ω | 3% | 9 AWG | Choke Coil
Intertechnik LUT32/022/10 | 0.22 mH | 0.26 Ω | 3% | 18 AWG
Intertechnik LU44/082/071 | 0.82 mH | 0.85 Ω | 3% | 21 AWG
Intertechnik LUT32/018/10 | 0.18 mH | 0.23 Ω | 3% | 18 AWG
Read more: Air core coils
An air core inductor is nothing but copper wire with no core, so it never saturates and adds no distortion at any level. That is why it is the reference choice for passive crossovers, from tweeter circuits to bass filters.
The price is size and DCR: at high inductance the wire length and resistance grow quickly. Choose the thickest wire that fits; 1.4 mm or heavier wire cuts losses in the bass section considerably.























