Professional CCA 4 x 2.5mm (14AWG) Speaker Cable LSNH Black
Heavy-duty 4-core 2.5mm (14AWG) professional speaker cable featuring Low Smoke Zero Halogen (LSNH) sheathing. Engineered for high-power audio distribution, long cable runs, and high-spec architectural AV installations.
We sell this speaker cable cut to length by the metre to reduce on-site wastage and costs. Simply adjust the quantity to the number of metres you require, i.e., 25 metres = quantity 25
For discounts on larger lengths supplied on drums (100m to 500m), please get in touch with us. This offers you cost savings and flexibility for extensive commercial installation projects.
£4.98per metre
- Description
- Technical Specifications
- Comparison Guide
- Q & A
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Description
2.5 mm (14AWG) fire-rated professional 4-core speaker cable, passive & 110V
Deliver uncompromised power and clarity across demanding audio configurations with our Professional 4-Core 2.5mm (14AWG) Speaker Cable. Built for custom installers, commercial AV contractors, and high-performance home cinema projects, this heavy-gauge cable is engineered to minimise signal loss over long runs.
Enclosed in a robust, flexible Low Smoke Zero Halogen (LSZH) outer jacket with a discreet matte black finish, it meets stringent building safety regulations by emitting minimal smoke and no toxic halogens in a fire—making it ideal for public buildings, multi-dwelling developments, and modern smart homes.
Featuring four robust 2.5mm² (14AWG) conductors, this multi-core setup is perfect for complex architectural wiring, bi-amping configurations, or running two separate stereo zones from a single clean conduit pull.
The thick cross-sectional area allows installers to run much longer cable lengths-up to 48 meters for passive & 300 meters for 100V -without sacrificing audio quality or straining the amplifier, making it ideal for large-scale installations.
This cable insulation and sheath are made with Low Smoke Non-Halogen (LSNH) materials, producing minimal smoke and toxic gas in a fire.
Available in cut-to-length measures to minimise on-site waste and optimise project costs, or convenient drum lengths of 100m, 150m, 200m, 250m, 300m, and 500m. (For bulk discounts on drums, please get in touch with us), ensuring flexibility to meet project needs and budget considerations.
Key Features:
- 99.999% Oxygen-Free Copper (OFC): Ensures high-fidelity transmission with minimal distortion
- Heavy-Duty 4-Core Layout: Four thick 2.5mm² (14AWG) copper-clad cores optimised for higher wattage outputs and extended cable runs with minimal resistance.
- LSNH Safety Insulation: Low Smoke Zero Halogen outer sheathing complies with rigorous fire safety standards for commercial and public sector installations.
- Professional-Grade CCA: Copper-clad aluminium construction provides an excellent balance of high signal fidelity, mechanical durability, and installation flexibility.
- Flexible & Easy to Pull: A pliable black outer jacket feeds effortlessly through tight wall cavities, conduits, and ceiling voids without binding or kinking.
- Versatile High-End Applications: Ideal for whole-home audio matrices, surround sound setups, multi-room audio, conference halls, and commercial hospitality venues.
- Cut to length: Sold by the metre to reduce wastage and cost.
- Bulk Discounts: Available on 100m–500m drums.
The following chart details the maximum cable length by power loss, which should not exceed 5% for home cinema applications.
| 4-core 2.5 mm Speaker Cable Length Power Loss Chart | ||||
|---|---|---|---|---|
| Power Loss % | 4 Ohms Speaker | 8 Ohms Speaker | 16 Ohms Speaker | 110V |
| 2.5 % | 5.9 metres | 11.9 metres | 23.8 metres | 150 metres to 300 metres |
| 5 % | Â 12.2 metres | Â 24.4 metres | 48.8 metres | |
| 7.5 % | 18.8 meres | 37.6 metres | 75.2 metres | |
| 10 % | 25.8 metres | 51.6 metres | 103.1 metres | |
For more information on specifying the correct cable, please see our ultimate guide on speaker cables
Looking for a different 4-core speaker cable?
| Professional Cable Comparison Chart | ||||
|---|---|---|---|---|
| Cable Conductors | Â 8 Ohms Speaker
Max length @ 5% Loss |
110V Max Length | Overall Diameter | Product Link |
| X4 1.5 mm | 15.4 metres | 150 metres | 7.6 mm | 1.5mm cable click here |
| X4 2.5 mm | 24.4 metres | 300Â metres | 9.3 mm | above |
| X4 4.0 mm | 48.4 metres | 500 metres | 10.5 mm | 4.0 mm cable click here |
Click the link below to download the full specification sheet.
webro-4-core-2.5mm-speaker-LSNG-class-cca
Technical details in brief
| Conductor Material | Oxygen-Free Bare Copper |
| Conductor Stranding | 2.5 mm², Class 5 to IEC 60228 |
| Insulation Material | Low Smoke Non-Halogen |
| Number of Cores | 4 |
| Screening Type | None |
| Flame Retardancy | BS EN 60332-3-24C |
| Low Smoke Emissions | Â BS EN 61034-2 |
| Halogen Gas Emissions | BS EN 60332-3-24C |
| RoHS 3 Compliant | Yes |
| Overall Diameter | 9.3 mm |
Speaker Cable Selection Guide: 1.5 mm (16AWG) vs 2.5 mm (14AWG) vs 4.0 mm (12AWG)
Choosing the correct wire gauge (AWG) is critical for protecting audio performance over distance, ensuring amplifier efficiency, and complying with modern building safety standards.
Remember the primary rule of AWG: a lower gauge number indicates a thicker conductor. Thicker cables provide lower electrical resistance, allowing high-power signals to travel longer distances without attenuation or loss of dynamic control.
At-a-Glance Comparison
| Specification | 1.5mm² (16AWG) | 2.5mm² (14AWG) | 4.0mm² (12AWG) |
| Primary Category | Standard Multi-Room & Background Audio | Heavy-Duty All-Rounder & Home Cinema | High-Power, Subwoofers & Ultra-Long Runs |
| Max Recommended Run (8Ω) | Up to 15 metres | Up to 25 metres | 25 to 50+ metres |
| Max Recommended Run (4Ω) | Up to 7.5 metres | Up to 12 metres | Up to 25 metres |
| Jacket Safety | LSNH (Low Smoke Zero Halogen) | LSNH (Low Smoke Zero Halogen) | LSNH (Low Smoke Zero Halogen) |
| Core Configuration | 4-Core (Black Sheath) | 4-Core (Black Sheath) | 4-Core (Black Sheath) |
| Flexibility / Route Ability | High (Easy tight pulls through small conduit) | Moderate (Good balance of strength & bend radius) | Stiffer (Requires larger conduit & direct wall paths) |
Detailed Breakdowns & Best Applications
1. Professional 4 x 1.5mm² (16AWG) Speaker Cable LSNH
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Best For: In-ceiling speakers, multi-room background audio, surround sound rear speakers, and shorter residential runs.
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Why Choose 1.5mm: It provides a lightweight, highly flexible outer jacket that routes easily through narrow wall cavities, dropped ceiling grids, and tight conduits. For standard background audio or shorter home cinema surround runs, 1.5mm delivers full audio fidelity without unnecessary cable bulk.
2. Professional 4 x 2.5mm² (14AWG) Speaker Cable LSNH
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Best For: Dolby Atmos in-ceiling/in-wall setups, mid-to-large home cinemas, commercial hospitality venues, and medium-distance runs.
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Why Choose 2.5mm: Considered the industry “sweet spot” for custom installation integrators. The increased conductor volume handles longer distances and higher power draws without choking bass response or introducing high-frequency attenuation.
3. Professional 4 x 4.0mm² (12AWG) Speaker Cable LSNH
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Best For: Passive subwoofers, high-wattage reference cinema amplifiers, low-impedance (4Ω/2Ω) performance speakers, and long commercial runs (auditorium/outdoor patio).
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Why Choose 4.0mm: Designed for high-current demands. Heavy bass signals and high-RMS-output amplifiers require maximum cross-sectional area to prevent power loss as heat. When routing audio across whole properties or driving low-impedance speakers, 4.0mm guarantees optimal system damping factor and signal transfer.
Why 4-Core LSNH Sheathing Matters
All three options feature two distinct structural advantages required for modern professional installations:
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4-Core Layout Efficiency: Pulling a single 4-core cable saves up to 50% on installation time compared to pulling two separate 2-core cables. It is ideal for wiring stereo speaker pairs (L/R) from a single run, bi-amping bi-wire speakers, or handling multi-zone routing.
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LSNH (Low Smoke Zero Halogen) Compliance: Mandatory for many commercial installations, schools, and multi-dwelling residential buildings. In a fire, LSNH sheathing emits minimal smoke and no toxic halogens, protecting occupants and preserving emergency exit visibility.
Q & A
Professional CCA 4 x 2.5mm (14AWG) Speaker Cable LSNH Black
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