LS-CU

The LS-14-CU flame-retardant speaker cable has been specifically designed for permanent building installations where both fire safety requirements and reliable signal transmission are essential. Certification according to EN 50575 Class Eca complies with the Construction Products Regulation (CPR) and enables use in professional installation environments. The conductor consists of 50 individual copper strands with a diameter of 0.25 mm each, forming a total cross-section of 2 × 2.5 mm². This construction provides an excellent balance of electrical conductivity and mechanical stability for long-term installations. The talc-coated PVC jacket simplifies stripping and ensures convenient handling during installation. Clear conductor color coding (Red / Blue) allows quick polarity identification, making installation faster and more straightforward. With its robust construction, standards-compliant flame rating, and installation-friendly design, this cable is a reliable choice for speaker wiring in buildings, conference rooms, training facilities, and professional audio installations.

The conductors of the LS-20 are made of high-purity copper. Under normal conditions, copper is the next-best electrical conductor after silver. Compared to cheap CCA (Copper Coated Aluminum) in particular, copper has a significantly better conductivity and is also mechanically more resilient. The stranded wire design is a tried and tested conductor design in the hi-fi sector. Each conductor consists of 50 x 0.25 mm strands that are "twisted" together. The advantage of this design lies in the economical production and the mechanical flexibility, which increases with smaller diameters of the individual wires.The conductor cross-section of 2x2.5 mm² forms the foundation for a dynamic and powerful sound. The polyethylene (PE) insulation of the LS-40 has very good electrical properties. Compared to PVC, it halves the annoying battery-like capacitance of cables. The reproduction gains in brilliance and spatial quality. The PE network jacket protects against mechanical damage and serves as additional insulation.

Inductance is a critical behavioral feature of a cable, causing resistance to the signal flow, rising with the frequency. Multicore architectures, such as that of the LS-40, reduce this effect and bring more precision and punch to the sound. The conductors of the LS-40 are made of high-purity copper. Under normal conditions, copper is the next-best electrical conductor after silver. Compared to cheap CCA (Copper Coated Aluminum) in particular, copper has a significantly better conductivity and is also mechanically more resilient. The stranded wire design is a tried and tested conductor design in the hi-fi sector. Each conductor consists of 50 x 0.25 mm strands that are "twisted" together. The advantage of this design lies in the economical method of production and the mechanical flexibility, which increases with smaller diameters of the individual wires. The conductor cross-section of 2x5.0 mm² is the foundation for a dynamic and powerful sound. The polyethylene (PE) insulation of the LS-40 has very good electrical properties. Compared to PVC, it halves the annoying battery-like capacitance of cables. The reproduction gains in brilliance and spatial quality. The PE network jacket protects against mechanical damage and serves as additional insulation.

The LS-Atmos AIR speaker cable uses Atmos AIR technology to create optimal conditions for precise signal transmission. The design aims to utilize air - an ideal dielectric—as extensively as possible between the signal conductors. At the center of the electric field between the conductors, a defined air chamber is integrated into the cable structure. This reduces capacitance and dielectric losses and helps preserve the integrity of the audio signal. Another key feature is the Concentric Copper conductor design. Each individual copper strand is positioned in a precisely defined location within the conductor. Unlike conventional stranded constructions, where the relative position of the strands continuously changes, this geometry remains stable. The result is consistent electrical properties and controlled signal transmission. The combination of air insulation and a precisely defined conductor geometry supports transparent, detailed sound reproduction with excellent dynamics and natural tonal balance. The LS-Atmos AIR speaker cable is designed for demanding hi-fi enthusiasts who value high-quality materials, thoughtful engineering, and accurate signal transmission.

The classic speaker cable for all applications, with remarkable electrical properties. Suitable for the home hi-fi, car hi-fi, DJ and home cinema sectors. The compact design brings remarkable performance in a minimum of space, with an optimum price/performance ratio. Perfect for laying - it is extremely flexible and easy to install thanks to conductors with diametrically opposed twist (S/Z). Plus/minus coding for orientation purposes.

The classic speaker cable for all applications, with remarkable electrical properties. Suitable for the home hi-fi, car hi-fi, DJ and home cinema sectors. The compact design brings remarkable performance in a minimum of space, with an optimum price/performance ratio. Perfect for laying - it is extremely flexible and easy to install thanks to conductors with diametrically opposed twist (S/Z). Plus/minus coding for orientation purposes.

Under normal conditions, copper is the second-best electrical conductor after silver. Compared to inexpensive CCA (Copper Coated Aluminum), copper offers significantly higher conductivity and also provides superior mechanical strength. The conductors of the Premium LS-CU are made from particularly high-purity copper. A conductor cross-section of up to 4 mm² forms the basis for a powerful and dynamic sound performance. Stranded wire is one of the proven conductor constructions. In the Premium LS-CU, the strands consist of 84 x 0.30 mm - Speaker cable 4.0 mm² twisted individual wires. The advantage of this construction lies in its high mechanical flexibility, which further increases as the diameter of the individual wires decreases. For cost reasons, many speaker cables use identical strands with the same stranding direction for both the positive and negative conductors. However, due to the identical torsional forces of the strands, such cables are often more difficult to route and tend to twist or tangle. This issue can be avoided by using strands with opposite stranding directions for the positive and negative conductors. The opposing torsional forces cancel each other out, allowing the cable to be routed more easily and smoothly.

The classic speaker cable for all applications, with remarkable electrical properties. Suitable for the home hi-fi, car hi-fi, DJ and home cinema sectors. The compact design brings remarkable performance in a minimum of space, with an optimum price/performance ratio. Perfect for laying - it is extremely flexible and easy to install thanks to conductors with diametrically opposed twist (S/Z). Plus/minus coding for orientation purposes.

The classic speaker cable for all applications, with remarkable electrical properties. Suitable for the home hi-fi, car hi-fi, DJ and home cinema sectors. The compact design brings remarkable performance in a minimum of space, with an optimum price/performance ratio. Perfect for laying - it is extremely flexible and easy to install thanks to conductors with diametrically opposed twist (S/Z). Plus/minus coding for orientation purposes.

The classic speaker cable for all applications, with remarkable electrical properties. Suitable for the home hi-fi, car hi-fi, DJ and home cinema sectors. The compact design brings remarkable performance in a minimum of space, with an optimum price/performance ratio. Perfect for laying - it is extremely flexible and easy to install thanks to conductors with diametrically opposed twist (S/Z). Plus/minus coding for orientation purposes.

Under normal conditions, copper is the next-best electrical conductor after silver. Compared to cheap CCA (Copper Coated Aluminum) in particular, copper has a significantly better conductivity and is also mechanically more resilient. The wires of the Premium LS-CU speaker cable are made of particularly high-purity copper. A conductor cross-section of up to 4 mm² provides the basis for a powerful and dynamic sound. Stranded wire is a tried-and-tested conductor design. In the Premium LS-CU speaker cable, the strands consist of 30 x 0.25 mm - speaker cable 1.5 mm² 50 x 0.25 mm - speaker cable 2.5 mm² 84 x 0.30 mm - speaker cable 4.0 mm² wires "braided" together. The advantage of this design lies in the mechanical flexibility, which increases with smaller diameters of the individual wires. For cost reasons, many loudspeaker cables use the same stranded wire with the same stranding direction for both the positive and negative conductors. However, these cables are not easy to lay and tend to get tangled due to the torsional forces acting on the strands in the same direction. This can be remedied by using stranded wires with different stranding directions for the positive and negative conductors. The opposing torsional forces cancel each other out and the cable can be laid more easily and smoothly.

The classic speaker cable for all applications, with remarkable electrical properties. Suitable for the home hi-fi, car hi-fi, DJ and home cinema sectors. The compact design brings remarkable performance in a minimum of space, with an optimum price/performance ratio. Perfect for laying - it is extremely flexible and easy to install thanks to conductors with diametrically opposed twist (S/Z). Plus/minus coding for orientation purposes.

The classic speaker cable for all applications, with remarkable electrical properties. Suitable for the home hi-fi, car hi-fi, DJ and home cinema sectors. The compact design brings remarkable performance in a minimum of space, with an optimum price/performance ratio. Perfect for laying - it is extremely flexible and easy to install thanks to conductors with diametrically opposed twist (S/Z). Plus/minus coding for orientation purposes.

Under normal conditions, copper is the next-best electrical conductor after silver. Compared to cheap CCA (Copper Coated Aluminum) in particular, copper has a significantly better conductivity and is also mechanically more resilient. The wires of the Premium LS-CU speaker cable are made of particularly high-purity copper. A conductor cross-section of up to 4 mm² provides the basis for a powerful and dynamic sound. Stranded wire is a tried-and-tested conductor design. In the Premium LS-CU, the strands consist of 84 x 0.30 mm (4.0 mm²) wires "braided" together. The advantage of this design lies in the mechanical flexibility, which increases with smaller diameters of the individual wires. For cost reasons, many loudspeaker cables use the same stranded wire with the same stranding direction for both the positive and negative conductors. However, these cables are not easy to lay and tend to get tangled due to the torsional forces acting on the strands in the same direction. This can be remedied by using stranded wires with different stranding directions for the positive and negative conductors. The opposing torsional forces cancel each other out and the cable can be laid more easily and smoothly.

The LS-CU flame-retardant speaker cable is designed for professional audio installations where, in addition to high signal quality, enhanced safety requirements must be met. The flame-retardant construction according to IEC 60332-1-2 Class Eca reduces the spread of flames along the cable, making it suitable for use in buildings and technical installations. The conductors consist of stranded copper wires with 0.25 mm diameter, providing an excellent balance of flexibility and mechanical stability. Depending on the application, the cable is available with a 2 × 1.5 mm² or 2 × 2.5 mm² cross-section, making it suitable for both compact audio installations and higher-power speaker systems. The extruded PVC jacket is easy to strip and facilitates quick handling during installation. Clear red/black conductor coding simplifies correct polarity assignment when connecting speakers. With its robust construction, standards-compliant flame rating, and excellent installation properties, the LS-CU is a reliable solution for public address systems, home theater setups, or professional audio cabling in buildings.

The Premium LS-CU Flat speaker cable is the ideal solution for anyone seeking high-quality audio performance without visible cable clutter. With its extremely flat design of just 4 mm thick, it can be effortlessly routed under carpets, behind baseboards, or along wall edges – invisible and space-saving. The highly flexible conductors consist of the finest braided strands with a 0.7 mm² cross-section per core (total 2 x 2.5 mm²). Unlike rigid stranded constructions, this design offers exceptional flexibility that masters even tight curves and complex routing paths without compromising performance. Perfect for home cinema applications: Whether 5.1-, 7.1-, or even Atmos setups – the LS-CU Flat supplies all speakers with ample power and delivers precise, powerful sound. The high-quality pure copper construction ensures minimal signal loss and natural reproduction that holds up even in demanding scenes. This cable combines functionality with HiFi quality: discreet in use, convincing in sound – the smart choice for modern living spaces and ambitious home cinema builders.

The LS‑MSR speaker cable is part of in‑akustik’s excellence series and uses the classic MSR technology, based on proven designs from the 1990s. The cable features a twin‑line construction with generous conductor cross-sections, providing a solid foundation for powerful and controlled signal transmission. The conductors are made of high‑purity copper, which offers excellent conductivity and mechanical resilience compared to copper-clad aluminum (CCA) alternatives. This ensures consistent electrical performance and long-term reliability. The fine-stranded conductors 651 x 0,07 mm - speaker cable 2,5 mm² 1050 x 0,07 mm - speaker cable 4,0 mm² 1575 x 0,07 mm - speaker cable 6,0 mm² give the cable high flexibility, making installation and routing easier. Clear plus/minus identification via color coding allows for straightforward connection. The LS‑MSR is sold as metered cable and can be fitted with connectors according to system requirements. The LS‑MSR speaker cable is suitable for hi-fi setups where solid electrical fundamentals, flexibility, and reliable signal transmission are a priority.

The in‑akustik Premium LS‑SILVER speaker cable combines high-quality materials with precise engineering to deliver dynamic, detailed, and transparent sound reproduction. The conductors are made of high-purity copper – the best electrical conductor after silver under normal conditions. Compared to copper-clad aluminum (CCA), pure copper provides not only superior conductivity but also greater mechanical durability. An additional silver plating on the conductor surface enhances high-frequency performance, providing clear, open, and nuanced detail reproduction. The strand structure is proven and precisely engineered: 30 × 0.25 mm - 1.5 mm² speaker cable 50 × 0.25 mm - 2.5 mm² speaker cable 84 × 0.30 mm - 4.0 mm² speaker cable The wires are twisted together (“stranded”), increasing mechanical flexibility, especially with smaller individual wire diameters. Another advantage of the Premium LS‑SILVER is the opposite strand twisting (S/Z twisting) of the positive and negative conductors. Conventional cables with strands twisted in the same direction can be difficult to route and may tangle. With opposite twisting, torsion forces cancel out, allowing the cable to be handled and installed smoothly and neatly. With conductor cross-sections up to 4 mm², the cable provides a solid foundation for powerful, dynamic, and detailed sound reproduction, suitable for both stereo and home theater applications. The Premium LS‑SILVER is the ideal speaker cable for audiophiles who value high-quality materials, precise construction, and uncolored signal transmission.

The S25 Speaker 225 is the compact solution in the S25 series and ideal for small setups. It impresses with solid performance and surprisingly good spatial imaging. The bass remains controlled and precise without bloating, the mids sound focused, voices natural and tangible. The highs are detailed without harshness. Its slim, discreet design combined with high flexibility makes it especially easy to install – whether visibly on open shelves, behind furniture, or in tight cable channels. This allows the Speaker 225 to seamlessly integrate into almost any setup – both acoustically and visually. Click here to discover exciting details

The S25 Speaker 415 is the versatile solution in the series, impressing both sonically and technically with neutrality, control, and dynamics. The multi-stranded multicore design reduces cable inductance, supporting precise and fast signal transmission. The sound features a defined, powerful bass foundation, cleanly layered mids, and a pleasant openness in the highs – never harsh, but present. The spatial imaging remains stable even at higher volumes. The cable is mechanically robust yet flexible – its unobtrusive jacket and moderate diameter allow for discreet integration into existing hi-fi setups, furniture, or cable ducts. Click here to discover exciting details

The S25 Speaker 425 is the most powerful model in the series, designed for audiophile setups with high power reserves and long cable runs. The large conductor cross-section and low-inductance multicore design ensure exceptionally low-loss transmission – even under high load or long cable lengths. The sound benefits from a particularly controlled, deep-reaching bass with precise punch, clearly defined mids, and an open, detailed high-frequency reproduction. The spatial presentation is stable and wide. Thanks to high-quality materials such as fine-stranded OFC copper, solid crimp contacts, and gold-plated connectors, the signal remains unaltered along the entire length. Its discreet, functionally elegant design and surprisingly high flexibility despite the large cross-section allow for neat, unobtrusive installation – even in complex rack setups or close to walls. Click here to discover exciting details