Jantzen Audio Air Core Wire Coil 0.42 mH / DCR 0.65 ohm / 0.63 mm wire

Product code: 000-1451

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Jantzen Audio Air Core Wire Coil 0.42 mH / DCR 0.65 ohm ohm / 0.63 mm wire

Name: Jantzen Audio Air Core Wire Coil 0.42 mH / DCR 0.65 ohm / 0.63 mm wire
Brand: Jantzen Audio
SKU: 000-1451
Price: 29.32 PLN
Availability: InStock

This Jantzen Audio air-core inductor has an inductance of 0.42 mH, a DCR of 0.65 ohm and a wire diameter of 0.63 mm. It is intended for building and upgrading passive loudspeaker crossovers. The absence of a magnetic core eliminates core saturation and allows the inductor to remain linear during dynamic changes in the music signal.

The model can be used in tweeter, midrange and woofer filters as well as RLC correction circuits and loudspeaker impedance-compensation networks. Precisely specified inductance and winding resistance make it easier to match the component correctly to the crossover design.

Description

Air-core inductors are among the most widely used coil types in high-quality passive loudspeaker crossovers. The absence of a metal core means there is no magnetic saturation or hysteresis, both of which can affect linearity at high signal levels.

The winding is made from high-quality class 1B copper wire with enamel insulation and a thermally bonding coating. Its compact self-supporting structure reduces movement between turns and makes secure mounting on a crossover board easier.

Wire diameter directly affects DCR. A thicker conductor reduces power loss and the inductor's influence on loudspeaker sensitivity, which makes it particularly useful in woofer filters. A thinner conductor is suitable for correction circuits and sections carrying lower current.

Application

two-way, three-way and multi-way passive loudspeaker crossovers,
low-pass filters for woofers,
band-pass filters for midrange drivers,
high-pass and correction circuits in tweeter sections,
RLC networks, resonance traps and impedance compensation,
new loudspeaker builds and upgrades of factory crossover networks.

Effect of construction on sound

The absence of a magnetic core supports linear operation even with highly dynamic signals. In a properly designed crossover this can help preserve accurate transient reproduction, fine dynamic detail and natural decay. The final result still depends on the complete filter design, DCR and the parameters of the connected driver.

Why choose this model?

The 0.42 mH inductance allows the component to be used in filters requiring this specific value. Its winding resistance of 0.65 ohm should be included in the crossover design because it affects signal level, damping and the electrical response of the connected loudspeaker.

The 0.63 mm wire provides a balance between resistance, coil dimensions and cost. This model is therefore particularly suitable for midrange, band-pass and selected woofer filter sections. This resistance should be included in the crossover simulation or design because it affects signal level and filter Q.

Key features

air-core construction with no magnetic core,
no core saturation or magnetic hysteresis,
compact self-supporting winding,
class 1B copper wire with enamel insulation,
bonding layer for thermal stabilisation of the winding,
inductance tolerance of ±3%,
solderable at up to 390°C for a maximum of 8 seconds,
breakdown voltage compliant with IEC 60317.

Installation

Secure the inductor to the crossover board with cable ties, hot-melt adhesive or a flexible mounting adhesive suitable for electronic components. Do not pass a steel screw through the centre of the winding because ferromagnetic material can change the inductance.

When two or more inductors are installed on the same board, position their axes at 90 degrees to one another. This reduces magnetic coupling and the risk of one inductor affecting another.

Avoid prolonged heating of the leads during soldering. Before installation, it is also worth checking the actual inductance and DCR, especially when building a matched pair of crossovers for the left and right loudspeakers.

Dimensions

Outer diameter	26 mm
Height	15 mm

Technical data

Manufacturer	Jantzen Audio
Coil type	air-core inductor
Inductance	0.42 mH
DCR	0.65 ohm
Inductance tolerance	±3%
Conductor material	copper
Wire diameter	0.63 mm
Approximate wire gauge	approximately 22 AWG
Insulation	polyurethane with an aliphatic polyamide overcoat
Manufacturer part number	000-1451

Responsible entity

JANTZEN AUDIO Sp. z o.o.

Poland

Product safety information:

Jantzen Audio components are intended for use in passive loudspeaker crossovers, loudspeaker construction and DIY audio projects. Installation should be carried out by an adult with suitable technical knowledge and experience in working with electronic components.

These products are not toys. Keep all components, wires, small parts and packaging materials away from children and animals.

Before installation, disconnect the audio equipment from the mains supply and all other power sources. Make sure that the amplifier and connected devices cannot be switched on accidentally while work is being carried out.

Always use the product within the voltage, current, power and temperature limits specified by the manufacturer. Check the product markings, technical data and available datasheets before installation. Components with an incorrect rating may overheat, become damaged or cause damage to other parts of the audio system.

Inductors, resistors and other crossover components may become hot during operation. Provide adequate ventilation and maintain sufficient distance from materials that may be damaged by heat. Components should be mounted securely so that their weight and vibration do not place stress on the leads or solder joints.

Capacitors may retain an electrical charge after the equipment has been switched off. Before touching or replacing a capacitor, discharge it safely using an appropriate resistor and measuring equipment. Do not discharge a capacitor by directly short-circuiting its terminals.

When soldering, use suitable tools, eye protection and adequate ventilation. Avoid excessive heating of component leads and insulation. Cut leads and metal terminals may have sharp edges and should be handled carefully.

Do not install components that are visibly damaged, deformed, swollen, cracked, corroded or affected by moisture. Stop using the equipment immediately if you notice excessive heat, smoke, an unusual smell, discolouration or other signs of damage.

Unless otherwise stated in the product documentation, components should be used only in dry indoor environments. Protect them from water, condensation, excessive humidity, dust, chemicals, direct sunlight and temperatures outside the permitted operating range.

Air-core inductors should not be mounted with a steel screw passing through the centre of the winding, as ferromagnetic material may alter their electrical properties. When several inductors are installed close together, they should be spaced apart and positioned with their axes at different angles to reduce magnetic interaction.

Use cables with an appropriate conductor size and insulation. All electrical connections must be properly soldered, insulated and protected against accidental short circuits. Make sure that components cannot move inside the loudspeaker enclosure during transport or operation.

Do not modify, unwind, drill, crush, cut open or otherwise alter the components. Any modification may change their electrical parameters and compromise safe operation.

Dispose of damaged or unused components and packaging in accordance with local regulations. Do not burn electronic components, insulation materials or packaging.

Product-specific technical data, installation instructions and warnings take precedence over this general safety information. If there is any uncertainty about product selection or installation, consult a qualified loudspeaker technician or electronics specialist.

Inductance [mH]:	0,42 mH
Category:	Air coil