Real Cable FL400T

The FL400T stands out thanks to a unique braiding architecture that defines the Flat Line range from Real Cable. Its conductors, made from 99.99% oxygen-free OFC copper, consist of multiple ultra-fine 0.10 mm strands, assembled in a flat braid, as opposed to the traditional round structure. This specific design reduces the cable’s linear capacitance while minimizing its thickness.

Its 4 mm² cross-section is distributed in a flat geometry, making it much easier to run through tight spaces. The transparent sheath is both flexible and memory-free, allowing it to hug contours precisely without permanent deformation. Thanks to this construction, the FL400T easily slips under a carpet, along baseboards, or through cable conduits, all while ensuring faithful and stable audio transmission.

Practical Installation Advantages

The main strength of the FL400T lies in its ability to become virtually invisible once installed. Its flat profile allows it to pass under carpeting without creating visible bumps, while its flexibility lets it follow the angles of baseboards perfectly. For home theater installations where aesthetics are as important as performance, this discretion is a decisive advantage.

The cable retains its flexibility even after installation, avoiding the mechanical stress that can affect other types of conductors. Its robustness allows for repeated handling without altering its electrical properties. The transparent sheath provides a neutral finish that blends seamlessly into any decorative environment.

Sound Characteristics and Transmission

The FL400T’s specific braiding is designed to optimize conductivity while reducing unwanted capacitive effects. The OFC copper ensures faithful signal transmission thanks to its very low inter-grain interactions. This purity results in a balanced sound reproduction where all frequencies retain their natural definition.

Users report bright, non-harsh highs and deep, firm bass. This balanced sound signature is particularly well-suited to systems seeking neutrality rather than coloration. The cable’s low linear capacitance preserves fast transients, contributing to a precise and detailed soundstage.

Applications and Compatibility

The FL400T is suitable for a wide range of applications, from compact satellite speakers to high-power floorstanding models. Its 4 mm² cross-section is ideal for medium to high amplification, while its meticulous construction meets the demands of refined systems.

In home theater setups, it excels for surround speaker connections where discretion is key. In stereo hi-fi, it’s a versatile solution for systems prioritizing architectural integration. Its compatibility with all types of terminals makes it easy to use with existing equipment.

Position in the Real Cable Range

The FL400T belongs to the Evolution series, positioned above the entry-level AVS range. Compared to AVS models, it benefits from higher-quality copper and finer strands for improved transmission. This step up is evident in both the overall finish and acoustic performance.

Within the Flat Line family, the 4 mm² FL400T complements the FL250T 2.5 mm² model, offering a solution suited to higher power needs. This range specifically addresses integration requirements without compromising transmission quality.

Frequently Asked Questions

How thick is the cable once installed under a carpet? The FL400T’s ultra-flat profile creates minimal relief, generally imperceptible under a standard-thickness carpet. Its flexibility allows it to conform perfectly to the floor without creating visible bumps. This discretion is one of its main advantages for installations where aesthetics are paramount.

Can the cable be bent at a right angle without damage? Yes, the construction with very fine strands and the flexible sheath allow for tight bends without harmful mechanical stress. This flexibility makes it easy to run through corners and tight spaces. However, it’s best to avoid repeated bending at the same spot, which could eventually affect the sheath.

What is the maximum recommended length for this 4 mm² cable? The 4 mm² cross-section is suitable for lengths up to 15–20 meters with most amplifiers. Beyond that, depending on amplifier power and speaker impedance, a larger cross-section may be necessary. For typical installations under 10 meters, this size offers a comfortable margin.

Is the FL400T suitable for speaker bi-wiring? Absolutely. Its 4 mm² cross-section and transmission qualities make it a suitable choice for bi-wiring. Its flat profile even makes it easy to install two parallel runs without excessive bulk. The neutrality of its sound signature preserves the balance between bass and treble channels.

How can you distinguish polarity on this transparent cable? The transparent FL400T cable requires polarity marking during installation. A simple method is to mark one of the conductors with a marker or tape at both ends. Some installers use adhesive labels for a permanent, professional identification.

Technical Specifications

Composition

• Oxygen-Free Copper (OFC)
• Cross-section: 4 mm²
• Strands: 0.10 mm

Commercial

• Sold by the meter