Professional CCA 4 x 4mm (12AWG) 4-Core Speaker Cable LSNH Black
Ultra-heavy-duty 4-core 4.0mm (12AWG) professional speaker cable with Low-Smoke, Zero-Halogen (LSZH) insulation. Engineered for high-power amplifiers, extended cable runs, subwoofers, and high-performance commercial AV installations.
The additional cross-sectional area allows much longer cable runs: up to 96 metres for passive speakers and 500 metres for 110V systems. This cable is also suitable for passive high-power, low-impedance subwoofers delivering powerful, punchy bass effortlessly
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 contact us. This offers you cost savings and flexibility for extensive commercial installation projects.
£7.80per metre
- Description
- Technical Specifications
- Comparison Guide
- Q & A
- Reviews (0)
Description
Heavy-Duty 4mm (12AWG) 4-core professional installation speaker cable
Maximum power handling and ultra-low resistance come together in our Professional 4-Core 4.0mm (12AWG) Speaker Cable. Designed for demanding AV integrators and commercial installers, this high-gauge cable delivers uncompromised audio fidelity across long distances, ensuring your speakers receive a clean, uninterrupted signal even under heavy loads.
Outfitted with a durable Low Smoke Zero Halogen (LSNH) outer jacket in a discreet black finish, this cable meets strict fire safety compliance standards. In a fire, it releases minimal smoke and no corrosive halogen gases, making it mandatory for public buildings, schools, commercial spaces, and high-spec residential builds.
With four thick 4.0mm² (12AWG) conductors, this cable provides the versatility to run high-powered stereo pairs, bi-amped reference speakers, or long-distance multi-zone systems through a single, easy-to-manage outer sheath.
The thick cross-sectional area allows installers to run much longer cable lengths-up to 96 meters for passive & 500 meters for 100V -without sacrificing audio quality or straining the amplifier, making it ideal for large-scale installations.
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
- Ultra-Heavy 4-Core Conductor Design: Four extra-thick 4.0mm² (12AWG) cores engineered to minimise signal degradation over extended distance cable runs.
- LSNH (Low Smoke Zero Halogen) Safety Sheathing: Built for stringent building compliance, offering maximum safety by restricting toxic smoke and halogen release during fires.
- Premium CCA Construction: High-density Copper-Clad Aluminium provides superb conductivity, low weight, and cost-effective performance for large installations.
- Tough yet Flexible Sheath: Durable black outer jacket designed for smooth routing through conduits, ceiling spaces, and structural cavities without binding.
- High-Power AV Applications: Ideal for high-end home cinema installations, subwoofers, bi-wire/bi-amp configurations, auditoriums, and commercial venue sound systems.
- 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 4 mm Speaker Cable Length Power Loss Chart | ||||
|---|---|---|---|---|
| Power Loss % | 4 Ohms Speaker | 8 Ohms Speaker | 16 Ohms Speaker | 110V |
| 2.5 % | 11.8 metres | 23.6 metres | 47.3 metres | Up to 500 metres |
| 5 % | Â 24.2Â metres | Â 48.4 metres | 96.9 metres | |
| 7.5 % | 37.3 meres | 74.6 metres | 149.3 metres | |
| 10 % | 5.12 metres | 102.4 metres | 204.8 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?
| 4-Core 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 | 2.5 mm cable click here |
| X4 4.0 mm | 48.4 metres | 500 metres | 11.5 mm | above |
Click the link below to download the full specification sheet.
webro-4-core-4mm-speaker-LSNG-class-cca
Technical details in brief
| Conductor Material | Oxygen-Free Bare Copper |
| Conductor Stranding | 4.0 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 | 11.5 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 4mm (12AWG) 4-Core Speaker Cable LSNH Black
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