Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE

Mundorf Mundorf Aronit core coil

Mundorf Aronit Spule

Aronit is a material based on sintered metal which produces very low distortions, even at high loadings. This material, in combination with specially tuned coil formers, allows the material coil to have a low ohmic resistance with excellent value for money. Aronit choke coils are used wherever high load capacity and low distortion need to be achieved at low cost.

Technical specifications:    Core material: ARONIT
Copper 99.99%
Coil form: PA, fi bre-glass reinforced
In non-impregnated coils, vibration occurs as a result of the current flowing through the coil. The microphonic effect, i.e. the conversion of mechanical into electric oscillations, adds these oscillations back to the original signal as additional information. In this way, details of the original signal are overlaid and rendered unrecognisable. The music loses spatial quality and transparency. This process is prevented by
  • vacuum impregnation
  • baked varnish coils are made from a special wire
  • copper foil coils
Baked varnish coils of this type can be found below. Their product ID starts with "b"
Copper foil coils can be found at the end of this page.

Please note: The power values Pmax in the following tables were determined at 20 degrees Celsius ambient temperature and free convection. They are just a guideline and - since we are not the manufacturers - cannot be guaranteed by us.

Mundorf-Spulen Aronit core coil a71 (wire with 0.71 mm diameter)

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-a71-56 5.6 1.6 0.71 16 W 45 x 30 EUR 12,30
M-a71-68 6.8 1.7 0.71 17 W 45 x 30 EUR 13,30
M-a71-82 8.2 1.9 0.71 15 W 45 x 30 EUR 14,30
M-a71-100 10.0 2.2 0.71 14 W 45 x 30 EUR 15,20
M-a71-120 12.0 2.6 0.71 13 W 45 x 30 EUR 16,20
*) 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.

Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE  

 

Mundorf-Spulen Aronit core coil a100 (wire with 1.0 mm diameter)

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-a100-22 2.2 0.49 1.00 56 W 45 x 30 EUR 12,30
M-a100-27 2.7 0.57 1.00 50 W 45 x 30 EUR 13,30
M-a100-33 3.3 0.64 1.00 47 W 45 x 30 EUR 14,30
M-a100-39 3.9 0.71 1.00 46 W 45 x 30 EUR 15,20
M-a100-47 4.7 0.80 1.00 44 W 45 x 30 EUR 16,20
*) 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.

 
Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE  

 

Mundorf-Spulen Aronit core coil a140 (wire with 1.4 mm diameter)

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-a140-039 0.39 0.10 1.4 229 W 45 x 30 EUR 11,40
M-a140-047 0.47 0.11 1.4 228 W 45 x 30 EUR 12,40
M-a140-056 0.56 0.13 1.4 210 W 45 x 30 EUR 13,30
M-a140-068 0.68 0.14 1.4 205 W 45 x 30 EUR 14,30
M-a140-082 0.82 0.16 1.4 189 W 45 x 30 EUR 15,30
M-a140-10 1.0 0.18 1.4 180 W 45 x 30 EUR 16,20
*) 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.

 
Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE  

 

Mundorf-Spulen Aronit core coil ba71 with baked 0.71 mm wire

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-ba71-56 5.6 1.6 0.71 16 W 45 x 30 EUR 15,30
M-ba71-68 6.8 1.7 0.71 17 W 45 x 30 EUR 16,20
M-ba71-82 8.2 1.9 0.71 15 W 45 x 30 EUR 17,20
M-ba71-100 10.0 2.2 0.71 14 W 45 x 30 EUR 18,25
M-ba71-120 12.0 2.6 0.71 13 W 45 x 30 EUR 19,15
*) 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.

 
Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE  

 

Mundorf-Spulen Aronit core coil ba100 with baked 1.0 mm wire

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-ba100-12 1.2 0.33 1.00 65 W 45 x 30 EUR 11,30
M-ba100-22 2.2 0.49 1.00 56 W 45 x 30 EUR 15,30
M-ba100-33 3.3 0.64 1.00 47 W 45 x 30 EUR 17,20
M-ba100-39 3.9 0.71 1.00 46 W 45 x 30 EUR 18,25
M-ba100-47 4.7 0.80 1.00 44 W 45 x 30 EUR 19,15
*) 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.

 
Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE  

 

Mundorf-Spulen Aronit core coil ba140 with baked 1.4 mm wire

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
M-ba140-039 0.39 0.10 1.4 229 W 45 x 30 EUR 14,30
M-ba140-047 0.47 0.11 1.4 228 W 45 x 30 EUR 15,30
M-ba140-056 0.56 0.13 1.4 210 W 45 x 30 EUR 16,30
M-ba140-068 0.68 0.14 1.4 205 W 45 x 30 EUR 17,20
M-ba140-082 0.82 0.16 1.4 189 W 45 x 30 EUR 18,20
M-ba140-10 1.0 0.18 1.4 180 W 45 x 30 EUR 19,25
M-ba140-22 2.2 0.34 1.4 175 W 70 x 29 EUR 19,60
*) 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.

 
Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE  

 

Mundorf-Spulen Aronit-core coils cfe with copper foil

Mundorf Aronit Kupferfolienspule Winding upon winding, the foil coil is the most physically ideal coil type. This can be seen for example in the quality of the coil that remains constant for up to 100 kilohertz. Moreover, the undesired capacitive part of this coil is particularly low so that very high frequencies are also effectively blocked. In addition, the large surface area of the foil also improves the effective conductivity for alternating current (skin effect). The high mechanical stability of the design is also remarkable: Due to the large contact surface between the individual windings and the tough-elastic isolation of the polypropylene foil, the vibrations of the individual windings are effectively eliminated.

More information on vibrations of coils.
 

Product ID L/mH R/Ohm Wire-
D/mm
Pmax*)
8Ohm
Coil Size
(DxH/mm)
Price
... ... ... ... ... ... not available
*) 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.

 
Aronit core coils: A071 A100 A140 Baked varnish: BA071 BA100 BA140 foil coils: CFE  

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
Ferrit core coils good price/performance ratio; high inductivity
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