Child lock

Short answer

Triple-press the Setup button to toggle child lock on or off.

The back panel on the Marshall Sub 200 TV Subwoofer.

Child lock is a safety feature that prevents the user from accidentally increasing the volume. Triple-press the Setup button to toggle child lock on or off.

More guides

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Getting started

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Connecting Heston Sub 200 via RCA

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Adjusting the subwoofer sound

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Standby Mode

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Cleaning Heston Sub 200

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Factory reset

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Troubleshooting: Cannot connect wirelessly to a Heston soundbar

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Troubleshooting: Heston Sub 200 sound dull/weird/bad

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Troubleshooting: There is no sound

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Troubleshooting: Erratic behaviour

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