Article ID : 00150449 / Last Modified : 02/01/2019

I am unable to increase the volume of the portable speaker and the maximum volume stays low.

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IMPORTANT: If model-specific information is needed to complete these steps, refer to the manual supplied with the product.

The remaining battery level is low when the CHARGE indicator flashes slowly in orange.
In this case, the sound volume may become low. Turn off the unit and charge the battery.

When a device is connected to the AUDIO IN terminal of the unit, turn up the volume of the connected device.
If a cable with resistance is used, replace it with a cable without resistance.

When you use the speaker at a loud volume for a long time, the built-in battery may run low even if the speaker is connected to an AC outlet. As a result, sound becomes low. Turn off the speaker and charge the built-in battery sufficiently.