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Neutrik NL4FXX-W-S Speakon 4 Pole Cable Plug 6-12mm

£699
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Description

The Neutrik NL4FXX-W-S is a 4-pole Speakon cable plug with screw-type terminals and chuck strain relief, designed for cables between 6mm and 12mm diameter. The connector carries up to 37A RMS per contact and uses Neutrik's twist-lock system to secure the connection against accidental disconnection during live performance or installation work.

Used in professional audio installations, live sound reinforcement and touring rigs, the NL4FXX-W-S terminates speaker cables running from amplifiers to passive loudspeakers. The screw terminals accept stranded copper cable up to 2.5mm² cross-section and provide a gas-tight connection that resists oxidation over time. The chuck-type strain relief grips the outer cable jacket without requiring additional cable glands or heat shrink.

The two-component housing combines a hard grey body with a green soft-touch grip section, giving a secure hold when inserting or removing the connector under stage or rigging conditions. The improved kink protection at the cable entry reduces stress on the conductors during repeated coiling and uncoiling. The IP20 rating provides basic protection against solid objects above 12mm but is not sealed against moisture, so outdoor use requires additional weatherproofing at the connection point.

Neutrik Speakon connectors are the global standard for loudspeaker connections in professional audio, with cross-compatibility across all major amplifier and loudspeaker manufacturers. The NL4FXX-W-S is typically rated for 5,000 mating cycles and operates across a -33°C to +80°C temperature range, covering both cold-weather outdoor events and high-temperature amplifier rack environments.

Specification
Contact resistance ≤ 2 mΩ
Lifetime Typically 5'000 mating cycles
Terminals Screw type
Temperature range -33 °C to +80 °C
IP rating IP20
Cable : dimensions 6 -12mm
Frequently Asked

What cable size does the NL4FXX-W-S accept?

The connector fits cables between 6mm and 12mm outer diameter. The screw terminals accept stranded conductors up to 2.5mm² cross-section. Speaker cable in the 2.5mm² to 4mm² range typically falls within the 6-12mm outer diameter when jacketed.

What's the current rating per contact?

Each of the four contacts is rated at 37A RMS. In a typical bi-amp configuration using contacts 1+/1- for low frequency and 2+/2- for high frequency, both pairs can carry 37A simultaneously without exceeding thermal limits.

Is this plug compatible with all Speakon sockets?

Yes. The NL4FXX-W-S 4-pole plug mates with any Neutrik Speakon chassis socket (NL4MP, NL4MDV, NL4MMX) and is backwards-compatible with 2-pole Speakon sockets, where only contacts 1+/1- will make connection.

Can it be used outdoors?

The IP20 rating provides no moisture protection, so the connector is not weatherproof on its own. Outdoor installations require the mated connection to be housed inside a sealed enclosure or protected with a rubber boot or shroud to prevent water ingress.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The Neutrik NL4FXX-W-S is a 4-pole Speakon cable plug with screw-type terminals and chuck strain relief, designed for cables between 6mm and 12mm diameter. The connector carries up to 37A RMS per contact and uses Neutrik's twist-lock system to secure the connection against accidental disconnection during live performance or installation work.

    Used in professional audio installations, live sound reinforcement and touring rigs, the NL4FXX-W-S terminates speaker cables running from amplifiers to passive loudspeakers. The screw terminals accept stranded copper cable up to 2.5mm² cross-section and provide a gas-tight connection that resists oxidation over time. The chuck-type strain relief grips the outer cable jacket without requiring additional cable glands or heat shrink.

    The two-component housing combines a hard grey body with a green soft-touch grip section, giving a secure hold when inserting or removing the connector under stage or rigging conditions. The improved kink protection at the cable entry reduces stress on the conductors during repeated coiling and uncoiling. The IP20 rating provides basic protection against solid objects above 12mm but is not sealed against moisture, so outdoor use requires additional weatherproofing at the connection point.

    Neutrik Speakon connectors are the global standard for loudspeaker connections in professional audio, with cross-compatibility across all major amplifier and loudspeaker manufacturers. The NL4FXX-W-S is typically rated for 5,000 mating cycles and operates across a -33°C to +80°C temperature range, covering both cold-weather outdoor events and high-temperature amplifier rack environments.

    Specification
    Contact resistance ≤ 2 mΩ
    Lifetime Typically 5'000 mating cycles
    Terminals Screw type
    Temperature range -33 °C to +80 °C
    IP rating IP20
    Cable : dimensions 6 -12mm
    Frequently Asked

    What cable size does the NL4FXX-W-S accept?

    The connector fits cables between 6mm and 12mm outer diameter. The screw terminals accept stranded conductors up to 2.5mm² cross-section. Speaker cable in the 2.5mm² to 4mm² range typically falls within the 6-12mm outer diameter when jacketed.

    What's the current rating per contact?

    Each of the four contacts is rated at 37A RMS. In a typical bi-amp configuration using contacts 1+/1- for low frequency and 2+/2- for high frequency, both pairs can carry 37A simultaneously without exceeding thermal limits.

    Is this plug compatible with all Speakon sockets?

    Yes. The NL4FXX-W-S 4-pole plug mates with any Neutrik Speakon chassis socket (NL4MP, NL4MDV, NL4MMX) and is backwards-compatible with 2-pole Speakon sockets, where only contacts 1+/1- will make connection.

    Can it be used outdoors?

    The IP20 rating provides no moisture protection, so the connector is not weatherproof on its own. Outdoor installations require the mated connection to be housed inside a sealed enclosure or protected with a rubber boot or shroud to prevent water ingress.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.