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Mercury Hi-Flex LSZH Speaker Cable 2 x 0.75mm² - Black (100m Reel)

£6999
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
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Description

The Mercury Hi-Flex is a 2 x 0.75mm² speaker cable with a Low Smoke Zero Halogen (LSZH) sheath, supplied on a 100m reel. Each core uses a hybrid construction of 12 oxygen-free copper (OFC) strands and 12 copper-clad aluminium (CCA) strands, both at 0.2mm diameter, giving a combined cross-sectional area of 0.75mm² per conductor. The LSZH sheath contains no halogens, so if the cable is exposed to fire it produces minimal smoke and no toxic chlorine or bromine gases.

Designed for PA systems, commercial audio distribution and residential multi-room installations where fire safety regulations apply, the cable is rated to carry up to 6A per core and handles typical speaker loads without signal degradation. The 7mm overall diameter keeps the cable flexible enough to route through wall cavities, ceiling voids and under-floor ducting without stiffness, and the double insulation (one layer per core, plus the outer LSZH sheath) provides protection against physical damage and electrical faults during installation and use.

The black sheath colour keeps the cable discreet when surface-run or when used in visible applications such as hanging PA speakers. The 100m reel length suits installations spanning multiple rooms, floors or large open-plan areas without needing mid-run joins, which can introduce resistance and degrade audio performance. The hybrid OFC/CCA construction balances conductivity with cable weight and cost, making the Mercury Hi-Flex a practical choice for fixed installations where pure copper would add unnecessary expense.

Specification
Length 100m
Sheath Black LSZH
CSA 2 x 0.75mm²
Strands 2 x (12 x 0.2mmØ Cu + 12 x 0.2mmØ CCA)
Dimensions 7mmØ
Current 6A max.
Packed 2 reels
Frequently Asked

What does LSZH mean and where is it required?

Low Smoke Zero Halogen. LSZH cables produce minimal smoke and no toxic halogen gases (chlorine, bromine) when exposed to fire. Building regulations often require LSZH cabling in escape routes, public buildings, hospitals, schools and enclosed spaces where toxic fumes would impede evacuation.

Is the cable suitable for outdoor speaker runs?

No. The LSZH sheath is designed for indoor fire-safety compliance, not UV or water resistance. For outdoor speaker runs, use a cable rated for outdoor or direct-burial use.

What speaker impedance and distance does 0.75mm² support?

0.75mm² cable suits runs up to approximately 20-30m for 8Ω speakers without significant power loss. For longer runs or 4Ω loads, a larger CSA (1.5mm² or 2.5mm²) is recommended to avoid voltage drop.

Can this cable be used for line-level audio or microphone signals?

Not recommended. This is an unshielded speaker cable designed for high-level signals between amplifiers and passive speakers. Line-level audio and microphone signals require shielded cable to prevent interference and noise pickup.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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    Description

    The Mercury Hi-Flex is a 2 x 0.75mm² speaker cable with a Low Smoke Zero Halogen (LSZH) sheath, supplied on a 100m reel. Each core uses a hybrid construction of 12 oxygen-free copper (OFC) strands and 12 copper-clad aluminium (CCA) strands, both at 0.2mm diameter, giving a combined cross-sectional area of 0.75mm² per conductor. The LSZH sheath contains no halogens, so if the cable is exposed to fire it produces minimal smoke and no toxic chlorine or bromine gases.

    Designed for PA systems, commercial audio distribution and residential multi-room installations where fire safety regulations apply, the cable is rated to carry up to 6A per core and handles typical speaker loads without signal degradation. The 7mm overall diameter keeps the cable flexible enough to route through wall cavities, ceiling voids and under-floor ducting without stiffness, and the double insulation (one layer per core, plus the outer LSZH sheath) provides protection against physical damage and electrical faults during installation and use.

    The black sheath colour keeps the cable discreet when surface-run or when used in visible applications such as hanging PA speakers. The 100m reel length suits installations spanning multiple rooms, floors or large open-plan areas without needing mid-run joins, which can introduce resistance and degrade audio performance. The hybrid OFC/CCA construction balances conductivity with cable weight and cost, making the Mercury Hi-Flex a practical choice for fixed installations where pure copper would add unnecessary expense.

    Specification
    Length 100m
    Sheath Black LSZH
    CSA 2 x 0.75mm²
    Strands 2 x (12 x 0.2mmØ Cu + 12 x 0.2mmØ CCA)
    Dimensions 7mmØ
    Current 6A max.
    Packed 2 reels
    Frequently Asked

    What does LSZH mean and where is it required?

    Low Smoke Zero Halogen. LSZH cables produce minimal smoke and no toxic halogen gases (chlorine, bromine) when exposed to fire. Building regulations often require LSZH cabling in escape routes, public buildings, hospitals, schools and enclosed spaces where toxic fumes would impede evacuation.

    Is the cable suitable for outdoor speaker runs?

    No. The LSZH sheath is designed for indoor fire-safety compliance, not UV or water resistance. For outdoor speaker runs, use a cable rated for outdoor or direct-burial use.

    What speaker impedance and distance does 0.75mm² support?

    0.75mm² cable suits runs up to approximately 20-30m for 8Ω speakers without significant power loss. For longer runs or 4Ω loads, a larger CSA (1.5mm² or 2.5mm²) is recommended to avoid voltage drop.

    Can this cable be used for line-level audio or microphone signals?

    Not recommended. This is an unshielded speaker cable designed for high-level signals between amplifiers and passive speakers. Line-level audio and microphone signals require shielded cable to prevent interference and noise pickup.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.