Jantzen Audio Iron Core Wire Coil 2.5 mH / DCR 0.52 ohm ohm / 0.80 mm wire

Name: Jantzen Audio Iron Core Wire Coil 2.5 mH / DCR 0.52 ohm / 0.80 mm wire
Brand: Jantzen Audio
SKU: 000-2296
Price: 45.26 PLN
Availability: InStock

This Jantzen Audio iron-core wire inductor has an inductance of 2.5 mH, a DCR of 0.52 ohm and a wire diameter of 0.8 mm. It is primarily intended for woofer and midrange crossover sections. The Permite core provides high inductance in smaller dimensions and with lower resistance than a comparable air-core coil.

The cylindrical construction without end discs is a practical choice for new projects, repairs and crossover upgrades where reasonable cost, compact size and reduced power loss are important.

Description

The Permite core increases the inductance of the winding, so fewer turns are required than in an air-core coil of the same value. This reduces component size and helps keep DCR under control.

The cylindrical version has no side discs. Its simple and economical construction works particularly well in woofer and midrange filters when the installation does not require the smallest possible coil diameter.

The winding uses class 1B copper wire with enamel insulation and a heat-bonding coating. Permite has lower hysteresis than a conventional ferrite core, although core saturation must still be considered at high current levels.

Application

low-pass filters for woofers,
band-pass filters for midrange drivers,
crossovers requiring higher inductance with controlled DCR,
repair and upgrade of factory loudspeaker crossovers,
DIY projects where performance-to-cost ratio is important.

Effect of construction on sound

Lower resistance than a comparable air-core inductor can help preserve energy and control in the woofer section while reducing sensitivity loss. The result depends on correct DCR matching and current level; operation beyond the linear range of the core can increase distortion.

Why choose this model?

The 2.5 mH inductance allows the component to be used in filters requiring this specific value. Its winding resistance of 0.52 ohm should be included in the crossover design because it affects signal level, damping and the electrical response of the connected loudspeaker.

The 0.8 mm wire helps achieve the specified DCR while maintaining compact dimensions. This model is therefore particularly suitable for woofer and midrange filters requiring low DCR in moderate dimensions. This resistance should be included in the crossover simulation or design because it affects signal level and filter Q.

Key features

cylindrical Permite core without side discs,
high inductance in compact dimensions,
class 1B copper wire with enamel insulation,
heat-bonding layer that stabilises the winding,
inductance tolerance of ±3%,
solderable at up to 390°C for a maximum of 8 seconds,
breakdown voltage compliant with IEC 60317-0-1.

Installation

Secure the inductor firmly to the crossover board so that its weight does not load the leads. Cable ties, hot-melt adhesive or flexible electronic mounting adhesive can be used.

When several inductors are installed on one board, position their axes at 90 degrees and maintain as much spacing as practical. This reduces magnetic coupling and the influence of stray fields.

In high-power filters, verify the expected current and allow space for heat dissipation. When replacing an existing inductor, compare both inductance and DCR.

Dimensions

Outer diameter	22 mm
Height	40 mm

Technical data

Manufacturer	Jantzen Audio
Coil type	iron core wire inductor
Core material	Permite
Inductance	2.5 mH
DCR	0.52 ohm
Inductance tolerance	±3%
Conductor material	copper
Wire diameter	0.8 mm
Approximate wire gauge	approximately 20 AWG
Iron core mass	0.021 kg
Insulation	polyurethane with an aliphatic polyamide overcoat
Manufacturer part number	000-2296

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.