Speaker cable Cabletech OFC 0.75 mm — two-conductor oxygen-free copper for audio connections

Cabletech OFC 0.75 mm speaker cable is a two-conductor audio cable constructed from oxygen-free copper (OFC) with a 0.75 mm² cross-sectional area per conductor. It is designed for connecting loudspeakers to amplifiers, receivers or audio processors in home stereo systems and small public address setups. The cable provides low electrical resistance and improved corrosion resistance compared with non-OFC conductors, making it suitable for short to medium length speaker runs where consistent signal transfer is required.

Advantages

The OFC conductors reduce oxidization and help maintain low contact resistance over time, supporting clearer signal transfer between amplifier and speaker. The two-conductor design with a defined polarity marking simplifies correct wiring and minimizes the risk of phase errors. Its 0.75 mm² cross-section balances flexibility and current-carrying capacity for typical domestic audio applications, and the cable’s insulation provides basic mechanical protection for indoor installations.

Suitable for

• Connecting bookshelf or floor-standing speakers to home stereo amplifiers
• Short- to medium-length runs in small PA systems and public-address setups
• Desktop audio systems and multimedia speaker connections
• Replacement of existing worn speaker leads in domestic installations

Key specifications

• Conductor material: oxygen-free copper (OFC)
• Number of conductors: two (bi-wire style)
• Cross-sectional area per conductor: 0.75 mm²
• Insulation: PVC (suitable for indoor use)
• Typical application: speaker-to-amplifier connections

How to use

Strip an appropriate length of insulation from each conductor to expose the copper before making connections. Observe polarity by matching the marked conductor to the positive terminal on both amplifier and speaker to avoid phase reversal. Secure connections using bare-wire clamps, banana plugs or spade terminals as supported by your equipment. Route the cable away from mains wiring and sources of electromagnetic interference where possible; maintain gentle bends and avoid tight kinks to preserve conductor integrity.

Usage recommendations

For best results use this 0.75 mm² OFC speaker cable for runs up to medium distances within a room; consider larger cross-sections for long runs or high-power installations. Ensure terminals are clean and firmly fastened to maintain low contact resistance. Use appropriate strain relief at connection points and avoid exposure to moisture or direct sunlight.