TruSound 12/4 B2ca-s1a 4-Core 4.00mm (12AWG) LSHF Speaker Cable - Violet, 100m Drum
The TruSound 12/4 is a CPR-rated B2ca 4-Core 4.0mm LSHF Speaker Cable, engineered for 100V line and low impedance installs in public buildings and high-rise developments.
The TruSound 12/4 B2ca speaker cable is the correct specification choice for fixed 100V line and low impedance audio installations in environments including schools and universities, hospitals and healthcare facilities, airports and transport hubs, cinemas and theatres, hotels and hospitality venues, offices and commercial buildings, high-rise residential tower blocks, underground rail networks, tunnels and stations.
What is B2ca and Why Does it Matter?
For contractors, installers, electricians and specifiers working on projects in schools, hospitals, airports, hotels, offices, high-rise residential developments, underground rail networks and other high-occupancy or high-risk environments, cable fire safety classification is not optional — it is a legal and regulatory requirement. The TruSound 12/4 achieves a B2ca-s1a, d1, a1 CPR classification under EN50575:2014+A1:2016, one of the highest Euroclass fire ratings available for cables under the Construction Products Regulation (CPR).
B2ca indicates extremely limited flame spread and minimal heat release in the event of a fire. The additional classifications are equally important: s1a denotes very low smoke production, d1 indicates no flaming droplets or particles, and a1 confirms minimal acidity of combustion gases. Combined with its Low Smoke Halogen Free (LSHF) construction, the TruSound 12/4 produces minimal smoke and releases no toxic halogen gases in a fire situation — helping to maintain safe evacuation routes and limiting damage to sensitive equipment and building infrastructure.
The Ultimate in Fixed Installation Speaker Cable
The TruSound 12/4 represents the most capable and heavy-duty option in the TruSound B2ca speaker cable range — combining the heaviest available conductor gauge with a four-core configuration for the most demanding permanent fixed installation scenarios. The 4-core 4.0mm (12AWG) construction is the ideal specification choice for complex, high-power installations where multiple circuits, extended cable runs and maximum current carrying capacity are all required simultaneously. Whether used for dual-zone high-power low impedance feeds, bi-amplified main speaker trunk runs, large-scale 100V line distribution networks or combined signal and return paths across airports, underground rail networks, large hospitals and similar high-demand environments, the TruSound 12/4 provides the headroom, reliability and fire safety compliance that the most critical installations demand. The stranded oxygen-free bare copper conductors ensure exceptional signal conductivity and long-term reliability, whilst the dual-layer Low Smoke Halogen Free insulation and sheathing provide robust mechanical protection alongside the cable's outstanding fire performance credentials.
The distinctive violet sheath makes the TruSound 12/4 immediately identifiable on site and within installation pathways — a practical benefit for installers and maintenance engineers working within complex multi-cable building environments. The four cores are identified by Red, Blue, Black and White colour coding for straightforward and consistent termination throughout the installation.
Compliance You Can Rely On
The TruSound 12/4 carries a comprehensive suite of compliance certifications to give contractors, specifiers and building control professionals complete confidence in the product. In addition to its B2ca CPR classification, the cable is compliant with BS EN 60332-1-2 for flame retardancy, BS EN 61034-2 for low smoke generation and BS EN 60754-1&2 for halogen gas emission. It is RoHS and CE compliant under LVD (2014/35/EU) and CPR (305/2011), and has been UV and weather tested to ISO 4892-3 for reliable performance in exposed installation environments. The cable carries a voltage rating of 450/750V and has been test voltage rated at 2.5kV for 5 minutes.
TruSound TSS04004H06-B204 Key Features:
- B2ca-s1a, d1, a1 CPR Rated: Achieves one of the highest Euroclass fire ratings for cables under EN50575:2014+A1:2016, meeting the most stringent fire safety requirements for public and commercial buildings.
- Low Smoke Halogen Free (LSHF): Both insulation and sheath are LSHF rated, producing minimal smoke and no toxic halogen gases in the event of a fire to maintain safe evacuation routes.
- Stranded Oxygen-Free Bare Copper Conductors: High-purity OFC conductors for exceptional signal conductivity, low resistance and long-term reliability in permanent installations.
- 4-Core 4.0mm (12AWG) Construction: The most capable option in the TruSound B2ca range, combining maximum conductor gauge with four-core flexibility for the most complex and demanding fixed installation scenarios.
- Maximum Current Carrying Capacity: The 4.0mm conductor cross-section provides the highest current carrying capacity in the range, ideal for high-power low impedance main feeds and large-scale distributed audio trunk runs.
- Dual-Zone & Bi-Amp Capability: Four-core configuration supports dual-zone high-power low impedance feeds, bi-amplified speaker systems and combined signal and return path applications.
- Distinctive Violet Sheath: Easily identifiable on site and within cable pathways for straightforward maintenance and identification.
- Red, Blue, Black & White Core Identification: Clear four-core colour coding for consistent, error-free termination throughout the installation.
- 450/750V Voltage Rating: Suitable for a wide range of building audio and PA system installations.
- Flame Retardant: BS EN 60332-1-2 compliant.
- Low Smoke Generation: BS EN 61034-2 compliant.
- Halogen Free: BS EN 60754-1&2 compliant.
- RoHS & CE Compliant: LVD (2014/35/EU) and CPR (305/2011).
- UV & Weather Tested: ISO 4892-3 for reliable performance in exposed environments.
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100m Drum: Generous drum length for large-scale commercial and public sector installations.
SPECS & DOWNLOADS
Download the PDF Spec Sheet HERE >
TruSound TSS04004H06-B204 Specifications:
- Cable Type: 4-core speaker cable
- Conductor Size: 4.0mm² (12AWG)
- Conductor Material: Stranded oxygen-free bare copper (OFC)
- Number of Cores: 4
- Core Identification: Red, Blue, Black, White
- Insulation Material: Low Smoke Halogen Free (LSHF)
- Sheath Material: Low Smoke Halogen Free (LSHF)
- Sheath Colour: Violet
- Voltage Rating: 450/750V
- Test Voltage: 2.5kV for 5 minutes
- Insulation Resistance: > 200 MΩ.M
- Minimum Bend Radius: 15 x OD
- CPR Classification: B2ca s1a, d1, a1 (EN50575:2014+A1:2016)
- Flame Retardant: BS EN 60332-1-2
- Low Smoke Generation: BS EN 61034-2
- Halogen Gas Emission: BS EN 60754-1&2
- RoHS Compliant: Yes
- CE Compliant: LVD (2014/35/EU), CPR (305/2011)
- UV & Weather Tested: ISO 4892-3
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Drum Length: 100m
View our shipping and delivery information below. All prices include VAT.
Important notice for non-UK orders: Any order being shipping outside of the UK will incur an import tax. See below for more information.
Cut-off Times
Orders must be placed before 3:30pm to guarantee same-day dispatch. Any orders placed after this time are not guaranteed to be shipped the same day, and are more likely to be shipped the next working day.
To guarantee Saturday Delivery, orders must ideally be placed before 2pm.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
Orders placed over the weekend or Friday after cut-off will be processed and shipped the following Monday (or Tuesday during bank holidays).
Mainland UK Delivery Charges
Note: Next-day services are classed as working days (Mon-Fri) and do not include weekends. Please choose Saturday delivery if you require the item over the weekend.
Please also note orders with a high number of boxes may be subject to an additional charge.
All delivery options will be available at the checkout stage. Please ensure you add a mobile number to your order for tracking information.
Offshore & International
We ship to Scottish Highlands, Islands, Ireland and the EU. Please see the table below for base prices. Please note that these prices are subject to change based on the number of boxes.
The following postcodes fall under 'Highlands & Islands', and are subject to the above rates/lead time.
- Scottish Highlands: FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40 (excluding PA38), PH19-26, PH30-41, PH49-50
- Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA38, PA41-49, PA60-78, PH42-44, ZE1-3
If a UK Mainland next-day service is selected at checkout, please be aware that it won't be sent on that service.
If you require a next-day service to Northern Ireland and the highlands, get in touch so we can assist further.
EU Import Tax
Any goods shipped outside of the UK, over a certain value, will incur an import tax. The cost and rate will depend on the country and the order value.
This is a legal requirement and MUST be paid prior to delivery in order to receive your goods. You will be contacted by the courier once the order is dispatched to pay the fee.
Failure to pay import tax when applicable will result in the order being shipped back to Audio Volt. Any returned goods sent back to us due to non-payment of import tax are NOT ELIGIBLE for a refund on the shipping charge.
You can obtain an import duty estimate here.
Delivery Notes
On delivery, you must inspect the goods carefully for damage as Audio Volt is unable to accept responsibility for damage in transit, shortage of delivery or loss of products unless the customer advises Audio Volt of such within three working days from the date of delivery.
60 Day Returns Policy
We ask that you follow these guidelines to help us process your return as quickly and efficiently as possible:
- Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product's return.
- Contact our Customer Services Team on 02476 369890 (or email info@audiovolt.co.uk). We will then send you an RMA number and a returns form, which needs to be completed and sent back with the returned item(s).
- If the order has been unpacked, re-package it to ensure that it is being returned in its original condition. Please make sure all items relating to the product are returned, including manuals and cables.
- When returning an item, please obtain a proof of postage receipt from the courier.
Returned items must be mailed within 10 days of when the RMA number has been issued. Items received with a post date 30 days after your requested return will NOT be eligible for refund.
Please note: our returns policy is quite straightforward, but there are a number of conditions that we ask our customers to comply with before applying:
- It is your responsibility to request a return. If you don't tell us you want to make a return, we don't know. Once you do tell us, we will do everything we can to action it.
- If you have not requested a return within 60 days of receiving an order, we will assume that you are intending to keep it, and we will not authorise a return.
- We always refund the payment according to how the original purchase was made and aim to do so within 72 hours of the return being received by us.
- Returned goods are liable for a restocking fee of 15% towards handling and repackaging if the order is not returned in its original, unopened packaging. This charge will be subject to our inspection of the returned goods.
- Delivery charges will not be refunded unless the delivered goods are faulty.
- Replacement products are dispatched immediately after the returned goods have been received and accepted by Audio Volt.
- Items that develop a fault within 30 days of delivery are eligible for a replacement or a refund. Delivery costs are also reimbursed for faulty items. Please contact our Customer Services Team on 02476 369890 if you believe your item has developed a fault.
Finally, please remember that notifying us of your intention to apply for a return, saving the delivery paperwork and keeping the order in its original packaging will help both you and Audio Volt to process the return quickly.
Any Questions?
If you have any questions about our returns policy, please telephone us on 02476 369890 or email us at info@audiovolt.co.uk.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
