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Introduction
Coils sorted by inductivity Coils sorted
by inductivity
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coils
Mundorf air coil Mundorf
air coil
Baked varnish air coil Baked varnish
air coil
Hepta Strand coil Hepta
Strand coil
Mundorf CFC coil Mundorf
CFC coil
Mundorf VLCU coil Mundorf
VLCU coil
Silver/gold air coils Silver/gold
air coils
Aronit / P core coil Aronit / P
core coil
Drum / H core coil Drum / H
core coil
i-core coil/ BS coil i-core coil/
BS coil
Transformer core coil Transformer
core coil
Zero Ohm Coil Zero Ohm
Coil
Duelund coils Duelund
coils
Jantzen Wax coils Jantzen Wax
coils
Visaton coils Visaton
coils
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Coils

Coils are often categorised in air core coils and core coils. Air core coils usually don't have a core (they might have a synthetic core without electromagnetic properties). Core coils have a core made of ferromagnetic material (ferrite, iron sheet etc.) to increase its inductance.

Air core coils are best since they don't show any loss due to reverse flux. They often have the disadvantage of being too large at a given inductance and DC resistance. In this case, a ferromagnetic core has to be added to reduce the size.

The reverse flux loss in core coils

Cores made of ferromagnetic materials to increase coil inductance show two types of loss:

Both loss types result in sound degradation and not applicable to air core coils.

DC Loss

The wire used for the coil possesses a DC resistance. Reducing the DC resistance by employing a coil in series to a bass driver, results in tighter and cleaner bass. The DC resistance doesn't cause any harmonic distortion and, therefore, sound degradation.

Microphonics Effect

Besides the reverse flux loss, the microphonics effect also plays a role in all types of coils.

The microphonics effect (interaction of current flowing through the coil -> magnetic field -> -> mechanical movement of coil wires -> and the resulting induced voltage in the coil) adds information to the original signal. Details of the original signal are overlaid and alienated; the music lacks three-dimensionality and transparency. To avoid this, the wires should be more secured in place.

This can be done by
 

The table below shows which coil works best for a specific driver type.

Coil type (partly with brand names) Size DC-
resistance
Power handling Application Core material / properties
air core coil 0.7mm or backed varnish air core coil 0.7mm relatively small high low in parallel to tweeters or in correction circuits air / without reverse flux loss
air core coil 1.0mm or backed varnish air core coil 1.0mm medium medium medium in parallel to powerful tweeters
in series to midrange and small bass drivers
air / without reverse flux loss
air core coil 1.4mm or backed varnish air core coil 1.4mm large medium to small medium to high in series to midrange and bass drivers air / without reverse flux loss
air core coil 2.0 mm or larger .... very large low high in series to bass drivers air / without reverse flux loss
air core coils made of copper, silver or silver/gold foil
Hepta Strand coil
large medium to small medium to high in series to midrange and bass drivers
for state-of-the-art speakers
air / without reverse flux loss
H71 and H100 core coil medium to small medium medium everywhere, where an air core coil would be too large or too pricey ferrite / with reverse flux loss
H140 core coils ,
I core coils
medium low high to very high in series to bass drivers
for speakers with high power handling
ferrite / with reverse flux loss
F core coils small low to medium medium everywhere, where an air core coil would be too large or too pricey ferrite / with reverse flux loss
transformer core coils Zero Ohm Coils medium high to very high in series to bass drivers
for speakers with high power handling
ferrite / with reverse flux loss

Please note: the coil's polarity is of no importance!

recommended standard coils

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Audaphon air coil L7

Coils, Audaphon air coil L7

All listed coils are made of copper lacquer wire with a purity of>99.99%. The coil body is made of platic. 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, Wire-W the width of the wire, DxH the diameter and the height.

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.

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 3,90 excl. VAT: € 3.28 / $ 3.80
bl-L7-012 0.12 0.25 0.70 42 W 36 x 10 EUR 4,00 excl. VAT: € 3.36 / $ 3.90
bl-L7-015 0.15 0.28 0.70 39 W 36 x 10 EUR 4,10 excl. VAT: € 3.45 / $ 4.00
bl-L7-018 0.18 0.31 0.70 38 W 36 x 10 EUR 4,20 excl. VAT: € 3.53 / $ 4.09
bl-L7-022 0.22 0.34 0.70 37 W 36 x 10 EUR 4,30 excl. VAT: € 3.61 / $ 4.19
bl-L7-027 0.27 0.39 0.70 34 W 36 x 10 EUR 4,40 excl. VAT: € 3.70 / $ 4.29
bl-L7-033 0.33 0.43 0.70 33 W 36 x 10 EUR 4,50 excl. VAT: € 3.78 / $ 4.39
bl-L7-039 0.39 0.51 0.70 29 W 36 x 10 EUR 4,60 excl. VAT: € 3.87 / $ 4.48
bl-L7-047 0.47 0.58 0.70 21 W 30 x 20 EUR 4,70 excl. VAT: € 3.95 / $ 4.58
bl-L7-056 0.56 0.64 0.70 20 W 30 x 20 EUR 4,80 excl. VAT: € 4.03 / $ 4.68
bl-L7-068 0.68 0.71 0.70 20 W 30 x 20 EUR 5,00 excl. VAT: € 4.20 / $ 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Audaphon air coil L10

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

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 4,90 excl. VAT: € 4.12 / $ 4.78
bl-L10-015 0.15 0.17 1.00 82 W 30 x 20 EUR 5,20 excl. VAT: € 4.37 / $ 5.07
bl-L10-022 0.22 0.21 1.00 83 W 40 x 20 EUR 5,90 excl. VAT: € 4.96 / $ 5.75
bl-L10-033 0.33 0.26 1.00 77 W 40 x 20 EUR 6,50 excl. VAT: € 5.46 / $ 6.34
bl-L10-039 0.39 0.29 1.00 71 W 40 x 20 EUR 6,90 excl. VAT: € 5.80 / $ 6.73
bl-L10-047 0.47 0.32 1.00 67 W 40 x 20 EUR 7,50 excl. VAT: € 6.30 / $ 7.31
bl-L10-068 0.68 0.39 1.00 65 W 58 x 18 EUR 8,20 excl. VAT: € 6.89 / $ 7.99
bl-L10-082 0.82 0.44 1.00 62 W 58 x 18 EUR 8,90 excl. VAT: € 7.48 / $ 8.68
bl-L10-100 1.0 0.49 1.00 61 W 58 x 18 EUR 9,90 excl. VAT: € 8.32 / $ 9.65
bl-L10-120 1.2 0.54 1.00 63 W 58 x 18 EUR 10,90 excl. VAT: € 9.16 / $ 10.63
bl-L10-150 1.5 0.63 1.00 59 W 58 x 18 EUR 12,30 excl. VAT: € 10.34 / $ 11.99
bl-L10-180 1.8 0.70 1.00 56 W 58 x 18 EUR 13,30 excl. VAT: € 11.18 / $ 12.96
bl-L10-220 2.2 0.83 1.00 51 W 58 x 18 EUR 14,80 excl. VAT: € 12.44 / $ 14.43
bl-L10-270 2.7 0.93 1.00 46 W 58 x 30 EUR 16,90 excl. VAT: € 14.20 / $ 16.47
bl-L10-330 3.3 1.1 1.00 46 W 58 x 30 EUR 18,90 excl. VAT: € 15.88 / $ 18.42
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Audaphon air coil L13

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

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 5,50 excl. VAT: € 4.62 / $ 5.36
bl-L13-068 0.68 0.22 1.32 158 W 58 x 19 EUR 10,90 excl. VAT: € 9.16 / $ 10.63
bl-L13-082 0.82 0.28 1.32 165 W 70 x 29 EUR 11,90 excl. VAT: € 10.00 / $ 11.60
bl-L13-100 1.0 0.32 1.32 153 W 70 x 29 EUR 12,90 excl. VAT: € 10.84 / $ 12.57
bl-L13-120 1.2 0.35 1.32 150 W 70 x 29 EUR 14,00 excl. VAT: € 11.76 / $ 13.65
bl-L13-150 1.5 0.40 1.32 140 W 70 x 29 EUR 15,00 excl. VAT: € 12.61 / $ 14.62
bl-L13-180 1.8 0.45 1.32 132 W 70 x 29 EUR 16,00 excl. VAT: € 13.45 / $ 15.60
bl-L13-220 2.2 0.48 1.32 131 W 70 x 29 EUR 18,00 excl. VAT: € 15.13 / $ 17.55
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Audaphon ferrit core coil M12

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

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 9,60 excl. VAT: € 8.07 / $ 9.36
bl-m12-120 1.2 0.15 1.12 176 W 40 x 27 EUR 11,00 excl. VAT: € 9.24 / $ 10.72
bl-m12-150 1.5 0.16 1.18 193 W 45 x 36 EUR 11,80 excl. VAT: € 9.92 / $ 11.50
bl-m12-180 1.8 0.18 1.18 183 W 45 x 36 EUR 11,90 excl. VAT: € 10.00 / $ 11.60
bl-m12-220 2.2 0.20 1.18 175 W 45 x 36 EUR 12,90 excl. VAT: € 10.84 / $ 12.57
bl-m12-330 3.3 0.22 1.12 168 W 45 x 36 EUR 15,10 excl. VAT: € 12.69 / $ 14.72
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Audaphon ferrit core coil M14

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
bl-m14-390 3.9 0.22 1.4 189 W 56 x 40 EUR 24,00 excl. VAT: € 20.17 / $ 23.39
bl-m14-470 4.7 0.24 1.4 198 W 56 x 40 EUR 25,00 excl. VAT: € 21.01 / $ 24.37
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Mundorf air coil L100

Coils, Mundorf air coil L100
Enlarge

All listed coils are made of copper lacquer wire with a purity of>99.99%. The coil body is made of glass fibre reinforced polyamide. 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, Wire-W the width of the wire, DxH the diameter and the height.

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-L100-010 0.10 0.14 1.00 82 W 30 x 20 EUR 5,90 excl. VAT: € 4.96 / $ 5.75
M-L100-012 0.12 0.15 1.00 82 W 30 x 20 EUR 6,40 excl. VAT: € 5.38 / $ 6.24
M-L100-015 0.15 0.17 1.00 77 W 30 x 20 EUR 6,90 excl. VAT: € 5.80 / $ 6.73
M-L100-018 0.18 0.19 1.00 73 W 30 x 20 EUR 7,30 excl. VAT: € 6.13 / $ 7.12
M-L100-022 0.22 0.21 1.00 70 W 30 x 20 EUR 7,80 excl. VAT: € 6.55 / $ 7.60
M-L100-027 0.27 0.23 1.00 68 W 30 x 20 EUR 8,30 excl. VAT: € 6.97 / $ 8.09
M-L100-033 0.33 0.26 1.00 77 W 40 x 20 EUR 8,80 excl. VAT: € 7.39 / $ 8.58
M-L100-039 0.39 0.29 1.00 71 W 40 x 20 EUR 9,80 excl. VAT: € 8.24 / $ 9.55
M-L100-047 0.47 0.32 1.00 67 W 40 x 20 EUR 10,70 excl. VAT: € 8.99 / $ 10.43
M-L100-056 0.56 0.36 1.00 62 W 40 x 20 EUR 11,70 excl. VAT: € 9.83 / $ 11.41
M-L100-068 0.68 0.39 1.00 60 W 40 x 20 EUR 12,60 excl. VAT: € 10.59 / $ 12.28
M-L100-082 0.82 0.44 1.00 56 W 40 x 20 EUR 13,60 excl. VAT: € 11.43 / $ 13.26
M-L100-100 1.0 0.49 1.00 61 W 58 x 18 EUR 14,60 excl. VAT: € 12.27 / $ 14.23
M-L100-120 1.2 0.54 1.00 63 W 58 x 18 EUR 15,60 excl. VAT: € 13.11 / $ 15.21
M-L100-150 1.5 0.62 1.00 60 W 58 x 18 EUR 16,60 excl. VAT: € 13.95 / $ 16.18
M-L100-180 1.8 0.70 1.00 58 W 58 x 18 EUR 17,50 excl. VAT: € 14.71 / $ 17.06
M-L100-200 2.0 0.74 1.00 53 W 58 x 22 EUR 15,60 excl. VAT: € 13.11 / $ 15.21
M-L100-220 2.2 0.83 1.00 53 W 58 x 22 EUR 19,50 excl. VAT: € 16.39 / $ 19.01
M-L100-270 2.7 0.90 1.00 46 W 58 x 28 EUR 21,50 excl. VAT: € 18.07 / $ 20.96
M-L100-300 3.0 0.98 1.00 45 W 58 x 28 EUR 18,50 excl. VAT: € 15.55 / $ 18.03
M-L100-330 3.3 1.1 1.00 44 W 58 x 28 EUR 23,40 excl. VAT: € 19.66 / $ 22.81
M-L100-390 3.9 1.1 1.00 43 W 58 x 28 EUR 26,40 excl. VAT: € 22.18 / $ 25.73
M-L100-470 4.7 1.3 1.00 46 W 70 x 29 EUR 29,30 excl. VAT: € 24.62 / $ 28.56
M-L100-560 5.6 1.4 1.00 44 W 70 x 29 EUR 32,20 excl. VAT: € 27.06 / $ 31.39
M-L100-680 6.8 1.6 1.00 42 W 70 x 29 EUR 35,20 excl. VAT: € 29.58 / $ 34.31
M-L100-820 8.2 1.7 1.00 39 W 70 x 29 EUR 39,10 excl. VAT: € 32.86 / $ 38.11
M-L100-1000 10.0 1.9 1.00 36 W 70 x 29 EUR 44,00 excl. VAT: € 36.97 / $ 42.89
M-L100-1200 12.0 2.3 1.00 33 W 77 x 28 EUR 48,90 excl. VAT: € 41.09 / $ 47.67
M-L100-1500 15.0 2.6 1.00 30 W 77 x 28 EUR 56,70 excl. VAT: € 47.65 / $ 55.27
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Mundorf air coil L140

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-L140-010 0.10 0.07 1.4 267 W 40 x 20 EUR 8,80 excl. VAT: € 7.39 / $ 8.58
M-L140-012 0.12 0.08 1.4 265 W 40 x 20 EUR 9,80 excl. VAT: € 8.24 / $ 9.55
M-L140-015 0.15 0.10 1.4 237 W 40 x 20 EUR 10,70 excl. VAT: € 8.99 / $ 10.43
M-L140-018 0.18 0.11 1.4 251 W 58 x 18 EUR 11,70 excl. VAT: € 9.83 / $ 11.41
M-L140-022 0.22 0.12 1.4 248 W 58 x 18 EUR 12,60 excl. VAT: € 10.59 / $ 12.28
M-L140-027 0.27 0.13 1.4 245 W 58 x 18 EUR 13,60 excl. VAT: € 11.43 / $ 13.26
M-L140-033 0.33 0.15 1.4 227 W 58 x 18 EUR 14,60 excl. VAT: € 12.27 / $ 14.23
M-L140-039 0.39 0.16 1.4 239 W 58 x 18 EUR 15,60 excl. VAT: € 13.11 / $ 15.21
M-L140-047 0.47 0.19 1.4 213 W 58 x 18 EUR 17,50 excl. VAT: € 14.71 / $ 17.06
M-L140-056 0.56 0.20 1.4 192 W 58 x 22 EUR 19,50 excl. VAT: € 16.39 / $ 19.01
M-L140-068 0.68 0.23 1.4 197 W 58 x 28 EUR 21,50 excl. VAT: € 18.07 / $ 20.96
M-L140-082 0.82 0.26 1.4 184 W 58 x 28 EUR 23,40 excl. VAT: € 19.66 / $ 22.81
M-L140-100 1.0 0.28 1.4 181 W 58 x 28 EUR 25,40 excl. VAT: € 21.34 / $ 24.76
M-L140-120 1.2 0.31 1.4 180 W 70 x 29 EUR 28,30 excl. VAT: € 23.78 / $ 27.59
M-L140-150 1.5 0.36 1.4 165 W 70 x 29 EUR 31,30 excl. VAT: € 26.30 / $ 30.51
M-L140-180 1.8 0.40 1.4 157 W 70 x 29 EUR 34,20 excl. VAT: € 28.74 / $ 33.34
M-L140-200 2.0 0.43 1.4 154 W 70 x 29 EUR 27,30 excl. VAT: € 22.94 / $ 26.61
M-L140-220 2.2 0.46 1.4 152 W 70 x 29 EUR 37,10 excl. VAT: € 31.18 / $ 36.16
M-L140-270 2.7 0.51 1.4 133 W 77 x 28 EUR 41,10 excl. VAT: € 34.54 / $ 40.06
M-L140-300 3.0 0.55 1.4 131 W 77 x 28 EUR 33,20 excl. VAT: € 27.90 / $ 32.36
M-L140-330 3.3 0.58 1.4 131 W 77 x 28 EUR 48,90 excl. VAT: € 41.09 / $ 47.67
M-L140-390 3.9 0.65 1.4 123 W 77 x 28 EUR 53,80 excl. VAT: € 45.21 / $ 52.44
M-L140-470 4.7 0.77 1.4 107 W 70 x 59 EUR 58,70 excl. VAT: € 49.33 / $ 57.22
M-L140-560 5.6 0.89 1.4 98 W 70 x 59 EUR 65,60 excl. VAT: € 55.13 / $ 63.95
M-L140-680 6.8 0.96 1.4 96 W 70 x 59 EUR 72,40 excl. VAT: € 60.84 / $ 70.57
M-L140-820 8.2 1.1 1.4 89 W 70 x 59 EUR 80,30 excl. VAT: € 67.48 / $ 78.28
M-L140-1000 10.0 1.2 1.4 94 W 88x75x61 EUR 67,20 excl. VAT: € 56.47 / $ 65.51
M-L140-1200 12.0 1.4 1.4 93 W 88x75x61 EUR 74,40 excl. VAT: € 62.52 / $ 72.52
M-L140-1500 15.0 1.6 1.4 100 W 105x92x81 EUR 84,10 excl. VAT: € 70.67 / $ 81.98
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Mundorf drum (H core) coil H71

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-h71-100 1.0 0.25 0.71 48 W 40 x 38 EUR 7,80 excl. VAT: € 6.55 / $ 7.60
M-h71-120 1.2 0.27 0.71 47 W 40 x 38 EUR 8,30 excl. VAT: € 6.97 / $ 8.09
M-h71-150 1.5 0.31 0.71 43 W 40 x 38 EUR 8,80 excl. VAT: € 7.39 / $ 8.58
M-h71-180 1.8 0.34 0.71 41 W 40 x 38 EUR 9,30 excl. VAT: € 7.82 / $ 9.07
M-h71-200 2.0 0.36 0.71 0.0 W 40 x 38 EUR 7,00 excl. VAT: € 5.88 / $ 6.82
M-h71-220 2.2 0.38 0.71 41 W 40 x 38 EUR 9,80 excl. VAT: € 8.24 / $ 9.55
M-h71-270 2.7 0.42 0.71 39 W 40 x 38 EUR 10,30 excl. VAT: € 8.66 / $ 10.04
M-h71-300 3.0 0.44 0.71 39 W 40 x 38 EUR 7,60 excl. VAT: € 6.39 / $ 7.41
M-h71-330 3.3 0.47 0.71 37 W 40 x 38 EUR 10,70 excl. VAT: € 8.99 / $ 10.43
M-h71-390 3.9 0.50 0.71 36 W 40 x 38 EUR 11,00 excl. VAT: € 9.24 / $ 10.72
M-h71-470 4.7 0.46 0.71 41 W 40 x 38 EUR 11,40 excl. VAT: € 9.58 / $ 11.11
M-h71-560 5.6 0.62 0.71 32 W 40 x 38 EUR 12,00 excl. VAT: € 10.08 / $ 11.70
M-h71-680 6.8 0.70 0.71 30 W 40 x 38 EUR 12,40 excl. VAT: € 10.42 / $ 12.09
M-h71-820 8.2 0.80 0.71 27 W 40 x 38 EUR 13,30 excl. VAT: € 11.18 / $ 12.96
M-h71-1000 10.0 0.87 0.71 27 W 40 x 38 EUR 14,60 excl. VAT: € 12.27 / $ 14.23
M-h71-1200 12.0 0.98 0.71 24 W 40 x 38 EUR 15,60 excl. VAT: € 13.11 / $ 15.21
M-h71-1500 15.0 1.2 0.71 22 W 40 x 38 EUR 17,50 excl. VAT: € 14.71 / $ 17.06
M-h71-1800 18.0 1.3 0.71 21 W 40 x 38 EUR 18,50 excl. VAT: € 15.55 / $ 18.03
M-h71-2200 22.0 1.5 0.71 18 W 40 x 38 EUR 19,50 excl. VAT: € 16.39 / $ 19.01
M-h71-2700 27.0 1.7 0.71 17 W 40 x 38 EUR 21,50 excl. VAT: € 18.07 / $ 20.96
M-h71-3300 33.0 1.9 0.71 15 W 40 x 38 EUR 23,40 excl. VAT: € 19.66 / $ 22.81
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Coils, Mundorf drum (H core) coil H71

 

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-h100-068 0.68 0.11 1.00 177 W 40 x 38 EUR 8,70 excl. VAT: € 7.31 / $ 8.48
M-h100-082 0.82 0.12 1.00 167 W 40 x 38 EUR 8,70 excl. VAT: € 7.31 / $ 8.48
M-h100-100 1.0 0.13 1.00 159 W 40 x 38 EUR 11,70 excl. VAT: € 9.83 / $ 11.41
M-h100-120 1.2 0.15 1.00 142 W 40 x 38 EUR 12,30 excl. VAT: € 10.34 / $ 11.99
M-h100-150 1.5 0.17 1.00 129 W 40 x 38 EUR 12,60 excl. VAT: € 10.59 / $ 12.28
M-h100-180 1.8 0.19 1.00 118 W 40 x 38 EUR 13,60 excl. VAT: € 11.43 / $ 13.26
M-h100-200 2.0 0.20 1.00 115 W 40 x 38 EUR 10,70 excl. VAT: € 8.99 / $ 10.43
M-h100-220 2.2 0.21 1.00 111 W 40 x 38 EUR 14,60 excl. VAT: € 12.27 / $ 14.23
M-h100-270 2.7 0.24 1.00 100 W 40 x 38 EUR 15,60 excl. VAT: € 13.11 / $ 15.21
M-h100-300 3.0 0.25 1.00 99 W 40 x 38 EUR 12,60 excl. VAT: € 10.59 / $ 12.28
M-h100-330 3.3 0.27 1.00 93 W 40 x 38 EUR 16,20 excl. VAT: € 13.61 / $ 15.79
M-h100-390 3.9 0.30 1.00 88 W 40 x 38 EUR 17,20 excl. VAT: € 14.45 / $ 16.77
M-h100-470 4.7 0.34 1.00 82 W 40 x 38 EUR 18,10 excl. VAT: € 15.21 / $ 17.64
M-h100-560 5.6 0.39 1.00 74 W 40 x 38 EUR 19,10 excl. VAT: € 16.05 / $ 18.62
M-h100-680 6.8 0.46 1.00 64 W 40 x 38 EUR 21,00 excl. VAT: € 17.65 / $ 20.47
M-h100-820 8.2 0.54 1.00 57 W 40 x 38 EUR 25,40 excl. VAT: € 21.34 / $ 24.76
M-h100-1000 10.0 0.64 1.00 58 W 56 x 35 EUR 26,40 excl. VAT: € 22.18 / $ 25.73
M-h100-1200 12.0 0.71 1.00 59 W 56 x 35 EUR 27,30 excl. VAT: € 22.94 / $ 26.61
M-h100-1500 15.0 0.83 1.00 53 W 56 x 35 EUR 29,30 excl. VAT: € 24.62 / $ 28.56
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Mundorf drum (H core) coil H140

L denotes inductance, R the DC resistance, D the diameter, Le the length, Wire-W the width of the wire, DxH the diameter and the height.

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-h140-100 1.0 0.08 1.4 339 W 40 x 38 EUR 17,20 excl. VAT: € 14.45 / $ 16.77
M-h140-120 1.2 0.09 1.4 322 W 40 x 38 EUR 18,10 excl. VAT: € 15.21 / $ 17.64
M-h140-150 1.5 0.11 1.4 280 W 40 x 38 EUR 19,10 excl. VAT: € 16.05 / $ 18.62
M-h140-180 1.8 0.12 1.4 271 W 40 x 38 EUR 21,00 excl. VAT: € 17.65 / $ 20.47
M-h140-200 2.0 0.13 1.4 264 W 40 x 38 EUR 20,50 excl. VAT: € 17.23 / $ 19.98
M-h140-220 2.2 0.14 1.4 259 W 40 x 38 EUR 22,90 excl. VAT: € 19.24 / $ 22.32
M-h140-270 2.7 0.17 1.4 232 W 56 x 35 EUR 27,30 excl. VAT: € 22.94 / $ 26.61
M-h140-300 3.0 0.19 1.4 224 W 56 x 35 EUR 26,40 excl. VAT: € 22.18 / $ 25.73
M-h140-330 3.3 0.19 1.4 232 W 56 x 35 EUR 29,30 excl. VAT: € 24.62 / $ 28.56
M-h140-390 3.9 0.22 1.4 210 W 56 x 35 EUR 31,30 excl. VAT: € 26.30 / $ 30.51
M-h140-470 4.7 0.26 1.4 187 W 56 x 35 EUR 33,20 excl. VAT: € 27.90 / $ 32.36
*) 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.

Audaphon air coils L7 L10 L13 core coils M12 M14 Mundorf Luft L100 L140 H coreH71 H100 H140 Monacor Trafo

Monacor transformer core coil

Coils, Monacor transformer core coil

Monacor transformer core coil with high power handling. The coil has OFC wire turns and is vacuum impregnated. These characteristics are available at an amazingly low price. This coil is also suited for subwoofers and bass drivers in hi-fi loudspeakers.

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
mo-125410 2.2 0.10 1.20 500 W 60x50x42 EUR 18,75 excl. VAT: € 15.76 / $ 18.28
mo-125420 2.7 0.12 1.20 420 W 60x50x42 EUR 18,75 excl. VAT: € 15.76 / $ 18.28
mo-125430 3.3 0.13 1.20 390 W 60x50x42 EUR 18,75 excl. VAT: € 15.76 / $ 18.28
mo-125440 3.9 0.16 1.20 300 W 60x50x42 EUR 18,75 excl. VAT: € 15.76 / $ 18.28
mo-125450 4.7 0.14 1.4 450 W 68x58x55 EUR 24,61 excl. VAT: € 20.68 / $ 23.99
mo-125460 5.6 0.15 1.4 425 W 68x58x55 EUR 25,50 excl. VAT: € 21.43 / $ 24.86
mo-125470 6.8 0.16 1.4 400 W 68x58x55 EUR 26,40 excl. VAT: € 22.18 / $ 25.73
mo-125480 8.2 0.17 1.4 370 W 68x58x55 EUR 28,69 excl. VAT: € 24.11 / $ 27.97
mo-125490 10.0 0.19 1.4 330 W 68x58x55 EUR 28,69 excl. VAT: € 24.11 / $ 27.97
mo-123190 12.0 0.14 1.6 480 W 76x65x92 EUR 61,26 excl. VAT: € 51.48 / $ 59.72
mo-123200 15.0 0.12 1.8 880 W 96x82x102 EUR 84,60 excl. VAT: € 71.09 / $ 82.47
*) 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.