No sound through subwoofer.
• Check that the amplifier is turned on.
• Ensure that the correct input source is selected on the amplifier.
• Check that the subwoofer is turned on.
• Confirm that all connections between the amplifier and subwoofer are secure.
• Check that the connections between the source equipment and amplifier are secure.
• Check that the volume control is set correctly on the amplifier.
• Check that the volume control is set correctly on the subwoofer.
There is distorted or inconsistent sound.
• Confirm that all connections between the amplifier and loudspeakers are secure.
• Check that the connections between the source equipment and amplifier are secure.
There is no power to the subwoofer.
• Confirm that the connection to the mains is secure.
• Confirm that the plug is switched on at the wall.