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Air core coils are the best possible solution. To ensure a capacitive coupling only to neighbouring and not all turns, Mundorf manufactures an oxygen free copper foil coil (OFC copper).

The coil shows a consistent performance even beyond 100 kHz. The large surface reduces the skin effect (higher frequencies are carried on the copper surface).

Additionally, the coil has a tough, yet elastic isolation made from polypropylene foil ensuring a high mechanical stability and, therefore, suppressing vibrations efficiently.

A lab test carried out by Hobby HiFi (4/2000, starting at page 66) confirms both points: this coil is far better than vacuum impregnated round wire coils or baked varnish coils (and obviously standard coils) and is clearly superior to TRITEC coils and foil coils by CFAG (vibration, microphonics).

Mundorf is certain that these characteristics cause a considerable improvement in dynamics, attention to detail and three-dimensionality. This type of CFC coils you'll find e.g. in the Magnat Vintage 990 setting you back some 40.000 EUR (ref. Stereoplay 12/2001 page 12).

Mundorf CFC Cupferfolien-Spule Mundorf CFC Air Core Coil

In the picture you'll notice the tightly wound coil and above the wide foil connectors that can be shortened to the required length.

The coils are made of 0.075 mm foil with the following diameters:
cfc16=1.3mm2. cfc14=2.1mm2. cfc12=3.3mm2. cfc10=6mm2



Values below 1 mH

Product ID L/mH R/Ohm Dimensions
dxh/mm		 Price
M-cfc16-010
M-cfc14-010		 0.10
0.10		 0.10
0.08
0.06		 .
. 		upon request
upon request
M-cfc16-015
M-cfc14-015
M-cfc12-015		 0.15
0.15
0.15		 0.11
0.08
0.07		 36x27
40x38
46x54		 EUR 9,75 EUR 13,70 EUR 21,65
M-cfc16-022
M-cfc14-022
M-cfc12-022		 0.22
0.22
0.22		 0.13
0.09
0.08		 38x27
42x38
48x54		 EUR 11,70 EUR 15,60 EUR 25,55
M-cfc16-027
M-cfc14-027
M-cfc12-027		 0.27
0.27
0.27		 0.16
0.11
0.08		 42x27
46x38
49x54		 EUR 12,70 EUR 16,60 EUR 27,55
M-cfc16-033
M-cfc14-033
M-cfc12-033		 0.33
0.33
0.33		 0.18
0.13
0.09		 44x27
49x38
52x54		 EUR 13,70 EUR 17,60 EUR 29,55
M-cfc16-039
M-cfc14-039
M-cfc12-039		 0.39
0.39
0.39		 0.20
0.14
0.10		 46x27
51x38
54x54		 EUR 14,70 EUR 19,60 EUR 32,55
M-cfc16-047
M-cfc14-047
M-cfc12-047		 0.47
0.47
0.47		 0.22
0.15
0.11		 48x27
53x38
56x54		 EUR 15,60 EUR 21,65 EUR 35,45
M-cfc16-056
M-cfc14-056
M-cfc12-056		 0.56
0.56
0.56		 0.24
0.16
0.12		 50x27
54x38
59x54		 EUR 16,60 EUR 23,65 EUR 39,45
M-cfc16-068
M-cfc14-068
M-cfc12-068		 0.68
0.68
0.68		 0.26
0.20
0.13		 52x27
60x38
61x54		 EUR 17,60 EUR 26,55 EUR 43,45
M-cfc16-082
M-cfc14-082
M-cfc12-082		 0.82
0.82
0.82		 0.29
0.22
0.15		 54x27
63x38
65x54		 EUR 18,60 EUR 29,55 EUR 48,35

Values above 1 mH

Product ID L/mH R/Ohm Dimensions
dxh/mm		 Price
M-cfc16-10
M-cfc14-10
M-cfc12-10		 1.00
1.00
1.00		 0.33
0.23
0.17		 57x27
64x38
69x54		 EUR 19,60 EUR 32,55 EUR 52,90
M-cfc16-12
M-cfc14-12
M-cfc12-12		 1.20
1.20
1.20		 0.38
0.26
0.19		 61x27
68x38
73x54		 EUR 21,65 EUR 35,45 EUR 57,90
M-cfc16-15
M-cfc14-15
M-cfc12-15		 1.50
1.50
1.50		 0.43
0.29
0.21		 65x27
71x38
76x54		 EUR 23,65 EUR 38,45 EUR 62,90
M-cfc16-18
M-cfc14-18
M-cfc12-18		 1.80
1.80
1.80		 0.50
0.32
0.24		 70x27
75x38
81x54		 EUR 25,55 EUR 41,45 EUR 68,90
M-cfc16-22
M-cfc14-22
M-cfc12-22
M-cfc10-22		 2.20
2.20
2.20
2.20		 0.54
0.35
0.27
0.20		 72x27
78x38
86x54
88x80		 EUR 29,55 EUR 47,35 EUR 80,90 EUR 162,00
M-cfc16-27
M-cfc14-27
M-cfc12-27
M-cfc10-27		 2.70
2.70
2.70
2.70		 0.61
0.43
0.31
0.23		 77x27
86x38
86x54
94x80		 EUR 31,55 EUR 50,90 EUR 86,90 EUR 177,00
M-cfc16-33
M-cfc14-33
M-cfc12-33
M-cfc10-33		 3.30
3.30
3.30
3.30		 0.69
0.50
0.35
0.25		 81x27
93x38
98x54
99x80		 EUR 35,45 EUR 58,90 EUR 98,90 EUR 207,00
M-cfc16-39
M-cfc14-39
M-cfc12-39
M-cfc10-39		 3.90
3.90
3.90
3.90		 0.75
0.53
0.39
0.28		 85x27
95x38
103x54
104x80		 EUR 38,45 EUR 63,90 EUR 108,00 EUR 229,00
M-cfc10-43 4.30 0.30 109x80 EUR 246,00
M-cfc16-47
M-cfc14-47
M-cfc12-47
M-cfc10-47		 4.70
4.70
4.70
4.70		 0.86
0.59
0.43
0.31		 91x27
100x38
108x54
109x80		 EUR 42,45 EUR 68,90 EUR 118,00 EUR 246,00
M-cfc16-56
M-cfc14-56
M-cfc12-56
M-cfc10-56		 5.60
5.60
5.60
5.60		 0.95
0.65
0.47
0.34		 95x27
105x38
113x54
114x80		 EUR 46,35 EUR 78,90 EUR 133,00 EUR 266,00
M-cfc16-68
M-cfc14-68
M-cfc12-68
M-cfc10-68		 6.80
6.80
6.80
6.80		 1.1
0.74
0.52
0.38		 102x27
112x38
118x54
121x80		 EUR 50,90 EUR 88,90 EUR 147,00 EUR 296,00

>

Mundorf CFC Cupferfolien-Spule Mundorf CFC air core coil made of silver foil

The picture shows the dense winding with flat contacts made of foil that may be shortened to the required length.

The coils are made of foils with the following cross-sections:
cfc16=1.3mm2, cfc14=2.1mm2

Pure silver foils are highly appreciated due to their ability to reproduce the timbre vocals and instruments extremely detailed, neutral and with subtle nuances. According to Mundorf, the addition of 1 % purest gold to the silver foil improves on the crystalline structure of the silver, accomplishing a slightly warmer sound characteristic.


Art.Nr. L/mH R/Ohm Größe
dxh/mm		 Preis
M-sfc16-015
M-sfc14-015		 0,15
0,15		 0,10
0,07		 38x..
40x..		 EUR 503,00
EUR 909,00
M-sfc16-022
M-sfc14-022		 0,22
0,22		 0,12
0,09		 40x..
42x..		 EUR 632,00
EUR 1137,00
M-sfc16-033
M-sfc14-033		 0,33
0,33		 0,16
0,11		 44x..
50x..		 EUR 790,00
EUR 1364,00
M-sfc16-047
M-sfc14-047		 0,47
0,47		 0,20
0,15		 48x..
57x..		 EUR 661,00
EUR 1651,00
M-sfc16-068
M-sfc14-068		 0,68
0,68		 0,23
0,17		 52x..
60x..		 EUR 1186,00
EUR 1929,00
M-sfc16-082
M-sfc14-082		 0,82
0,82		 0,26
0,19		 54x..
63x..		 EUR 1325,00
EUR 2275,00
M-sfc16-10
M-sfc14-10		 1,0
1,0		 0,30
0,21		 58x..
64x..		 EUR 1473,00
EUR 2542,00
M-sfc16-12
M-sfc14-12		 1,2
1,2		 0,34
0,23		 61x..
68x..		 EUR 1641,00
EUR 2542,00
M-sfc16-15
M-sfc14-15		 1,5
1,5		 0,39
0,27		 65x..
70x..		 EUR 1869,00
EUR 3225,00
M-sfc16-18
M-sfc14-18		 1,8
1,8		 0,45
0,29		 70x..
71x..		 EUR 2087,00
EUR 3582,00
M-sfc16-22
M-sfc14-22		 2,2
2,2		 0,49
0,32		 72x..
78x..		 EUR 2344,00
EUR 4027,00

Mundorf CFC Cupferfolien-Spule Mundorf CFC air core coil made of silver/gold foil

The Supreme Silver / Gold capacitors are brand new additions to the Mundorf range of products. The high-quality winding technique - known from the Supreme capacitors - is blended with silver foils, containing 1% gold. According to Mundorf this considerably improves on the crystalline structure of the silver. This inductor combines precision with harmony and elegance.



Product ID L/mH R/Ohm Dimensions
dxh/mm		 Price
M-sgfc16-015
M-sgfc14-015		 0.15
0.15		 0.10
0.07		 38x..
40x..		 EUR 701,00
EUR 1335,00
M-sgfc16-022
M-sgfc14-022		 0.22
0.22		 0.12
0.09		 40x..
42x..		 EUR 869,00
EUR 1681,00
M-sgfc16-033
M-sgfc14-033		 0.33
0.33		 0.16
0.11		 44x..
50x..		 EUR 1097,00
EUR 2018,00
M-sgfc16-047
M-sgfc14-047		 0.47
0.47		 0.20
0.15		 48x..
57x..		 EUR 1315,00
EUR 2433,00
M-sgfc16-068
M-sgfc14-068		 0.68
0.68		 0.23
0.17		 52x..
60x..		 EUR 1641,00
EUR 2849,00
M-sgfc16-082
M-sgfc14-082		 0.82
0.82		 0.26
0.19		 54x..
63x..		 EUR 1830,00
EUR 3364,00
M-sgfc16-10
M-sgfc14-10		 1.0
1.0		 0.30
0.21		 58x..
64x..		 EUR 2047,00
EUR 3750,00
M-sgfc16-12
M-sgfc14-12		 1.2
1.2		 0.34
0.23		 61x..
68x..		 EUR 2275,00
EUR 3750,00
M-sgfc16-15
M-sgfc14-15		 1.5
1.5		 0.39
0.27		 65x..
70x..		 EUR 2582,00
EUR 4770,00
M-sgfc16-18
M-sgfc14-18		 1.8
1.8		 0.45
0.29		 70x..
71x..		 EUR 2196,00
EUR 5285,00
M-sgfc16-22
M-sgfc14-22		 2.2
2.2		 0.49
0.32		 72x..
78x..		 EUR 3245,00
EUR 5948,00

Coils overview
Mundorf coils Properties
Air core coils good price/performance ratio; low distortion
Baked varnish air core coils good price/performance ratio; low distortion
Copper foil coil (cfc) with excellent three-dimensionality and attention to detail; they belong to the group of exceptionally neutral .
Air-core coils made from silver/gold wire
H Core Coils small impedance; high power handling
Aronit core coils
Feron i core coils small impedance; very high power handling
Zero Ohm Coils very small impedance; very high power handling