Air core coils: L7 L10 L13 coils with a ferromagnetic core: M

 

Audaphon coils

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Audaphon coils

All listed coils are made of copper lacquer wire with a purity of > 99.995%. The wire ends are tinned and labelled. Inductance is measured at 25 degrees Celsius; tolerance is +/- 3%. L denotes inductance, R the DC resistance, D the diameter, Le the length, W the width, H the height.

Air coils (i.e. coils without a ferro-magnetic core) are absolutely distortion-free, which on the face of it makes them ideal for all audio applications. The trouble is, their electrical resistance increases with their inductance. There are two solutions to this problem: One can either use very thick windings (this is why our standard range includes windings with wire up to 3 mm in diameter) or coils with cores. Lower cost and smaller size are also common reasons for choosing cored coils.


air core coils made of wire 0.7 mm in diameter

Product ID L/mH R/Ohm Wire-
D/mm		 Pmax*)
8Ohm		 Coil Size
(DxH/mm)		 Price
bl-L7-010 0.10 0.23 0.70 31 W 25 x 10 EUR 3,75 excl. VAT: € 3.23 / $ 3.78
bl-L7-012 0.12 0.25 0.70 42 W 36 x 10 EUR 3,85 excl. VAT: € 3.32 / $ 3.88
bl-L7-015 0.15 0.28 0.70 39 W 36 x 10 EUR 3,95 excl. VAT: € 3.41 / $ 3.98
bl-L7-018 0.18 0.31 0.70 38 W 36 x 10 EUR 4,05 excl. VAT: € 3.49 / $ 4.08
bl-L7-022 0.22 0.34 0.70 37 W 36 x 10 EUR 4,14 excl. VAT: € 3.57 / $ 4.18
bl-L7-027 0.27 0.39 0.70 34 W 36 x 10 EUR 4,24 excl. VAT: € 3.66 / $ 4.28
bl-L7-033 0.33 0.43 0.70 33 W 36 x 10 EUR 4,34 excl. VAT: € 3.74 / $ 4.38
bl-L7-039 0.39 0.51 0.70 29 W 36 x 10 EUR 4,44 excl. VAT: € 3.83 / $ 4.48
bl-L7-047 0.47 0.58 0.70 21 W 30 x 20 EUR 4,53 excl. VAT: € 3.91 / $ 4.57
bl-L7-056 0.56 0.64 0.70 20 W 30 x 20 EUR 4,63 excl. VAT: € 3.99 / $ 4.67
bl-L7-068 0.68 0.71 0.70 20 W 30 x 20 EUR 4,83 excl. VAT: € 4.16 / $ 4.87
(*) Pmax 8 Ohm is the maximum power that this coil is able to deliver to the bass driver.
The values are valid for free air convection and 20°C. For 4 Ohm speakers this value has to be halved.
zur Übersicht

air core coils made of wire 1.0 mm in diameter

Product ID L/mH R/Ohm Wire-
D/mm		 Pmax*)
8Ohm		 Coil Size
(DxH/mm)		 Price
Product ID L/mH R/Ohm Wire-
D/mm		 Pmax*)
8Ohm		 Coil Size
(DxH/mm)		 Price
bl-L10-010 0.10 0.14 1.00 82 W 30 x 20 EUR 4,24 excl. VAT: € 3.66 / $ 4.28
bl-L10-015 0.15 0.17 1.00 82 W 30 x 20 EUR 4,53 excl. VAT: € 3.91 / $ 4.57
bl-L10-022 0.22 0.21 1.00 83 W 40 x 20 EUR 4,83 excl. VAT: € 4.16 / $ 4.87
bl-L10-033 0.33 0.26 1.00 77 W 40 x 20 EUR 5,31 excl. VAT: € 4.58 / $ 5.36
bl-L10-039 0.39 0.29 1.00 71 W 40 x 20 EUR 5,61 excl. VAT: € 4.84 / $ 5.66
bl-L10-047 0.47 0.32 1.00 67 W 40 x 20 EUR 5,90 excl. VAT: € 5.09 / $ 5.95
bl-L10-068 0.68 0.39 1.00 65 W 58 x 18 EUR 6,48 excl. VAT: € 5.59 / $ 6.54
bl-L10-082 0.82 0.44 1.00 62 W 58 x 18 EUR 6,77 excl. VAT: € 5.84 / $ 6.83
bl-L10-100 1.0 0.49 1.00 61 W 58 x 18 EUR 7,36 excl. VAT: € 6.34 / $ 7.42
bl-L10-120 1.2 0.54 1.00 63 W 58 x 18 EUR 7,85 excl. VAT: € 6.77 / $ 7.92
bl-L10-150 1.5 0.63 1.00 59 W 58 x 18 EUR 8,43 excl. VAT: € 7.27 / $ 8.50
bl-L10-180 1.8 0.70 1.00 56 W 58 x 18 EUR 8,92 excl. VAT: € 7.69 / $ 9.00
bl-L10-220 2.2 0.83 1.00 51 W 58 x 18 EUR 9,85 excl. VAT: € 8.49 / $ 9.93
bl-L10-270 2.7 0.93 1.00 46 W 58 x 30 EUR 10,24 excl. VAT: € 8.83 / $ 10.33
bl-L10-330 3.3 1.1 1.00 46 W 58 x 30 EUR 12,09 excl. VAT: € 10.42 / $ 12.19
(*) Pmax 8 Ohm is the maximum power that this coil is able to deliver to the bass driver.
The values are valid for free air convection and 20°C. For 4 Ohm speakers this value has to be halved.
zur Übersicht

air core coils made of wire 1.3 mm in diameter

Product ID L/mH R/Ohm Wire-
D/mm		 Pmax*)
8Ohm		 Coil Size
(DxH/mm)		 Price
bl-L13-010 0.10 0.10 1.32 194 W 38 x 22 EUR 5,31 excl. VAT: € 4.58 / $ 5.36
bl-L13-068 0.68 0.22 1.32 158 W 58 x 19 EUR 10,63 excl. VAT: € 9.16 / $ 10.72
bl-L13-082 0.82 0.28 1.32 165 W 70 x 29 EUR 11,60 excl. VAT: € 10.00 / $ 11.70
bl-L13-100 1.0 0.32 1.32 153 W 70 x 29 EUR 12,57 excl. VAT: € 10.84 / $ 12.68
bl-L13-120 1.2 0.35 1.32 150 W 70 x 29 EUR 13,55 excl. VAT: € 11.68 / $ 13.67
bl-L13-150 1.5 0.40 1.32 140 W 70 x 29 EUR 14,52 excl. VAT: € 12.52 / $ 14.65
bl-L13-180 1.8 0.45 1.32 132 W 70 x 29 EUR 15,50 excl. VAT: € 13.36 / $ 15.63
bl-L13-220 2.2 0.48 1.32 131 W 70 x 29 EUR 17,45 excl. VAT: € 15.04 / $ 17.60
(*) Pmax 8 Ohm is the maximum power that this coil is able to deliver to the bass driver.
The values are valid for free air convection and 20°C. For 4 Ohm speakers this value has to be halved.
zur Übersicht

air core coils made of wire 1.4 mm in diameter

Product ID L/mH R/Ohm Wire-
D/mm		 Pmax*)
8Ohm		 Coil Size
(DxH/mm)		 Price
bl-L14-115 1.2 0.32 1.4 130 W 58 x 30 EUR 14,04 excl. VAT: € 12.10 / $ 14.16
(*) Pmax 8 Ohm is the maximum power that this coil is able to deliver to the bass driver.
The values are valid for free air convection and 20°C. For 4 Ohm speakers this value has to be halved.
zur Übersicht

ferrit core coils

Product ID L/mH R/Ohm Wire-
D/mm		 Pmax*)
8Ohm		 Coil Size
(DxH/mm)		 Price
bl-m12-100 1.0 0.13 1.18 180 W 40 x 27 EUR 9,36 excl. VAT: € 8.07 / $ 9.44
bl-m12-120 1.2 0.15 1.12 176 W 40 x 27 EUR 10,72 excl. VAT: € 9.24 / $ 10.81
bl-m12-150 1.5 0.16 1.18 193 W 45 x 36 EUR 10,92 excl. VAT: € 9.41 / $ 11.01
bl-m12-180 1.8 0.18 1.18 183 W 45 x 36 EUR 11,60 excl. VAT: € 10.00 / $ 11.70
bl-m12-220 2.2 0.20 1.18 175 W 45 x 36 EUR 12,57 excl. VAT: € 10.84 / $ 12.68
bl-m12-330 3.3 0.22 1.12 168 W 45 x 36 EUR 14,62 excl. VAT: € 12.60 / $ 14.75
bl-m14-390 3.9 0.22 1.4 189 W 56 x 40 EUR 23,30 excl. VAT: € 20.09 / $ 23.50
bl-m14-470 4.7 0.24 1.4 198 W 56 x 40 EUR 24,27 excl. VAT: € 20.92 / $ 24.48
(*) Pmax 8 Ohm is the maximum power that this coil is able to deliver to the bass driver.
The values are valid for free air convection and 20°C. For 4 Ohm speakers this value has to be halved.
zur Übersicht