[. . . ] The subwoofer box automatically switches on if a music signal is received. If there is no music signal for more than 60 seconds, the THb 200A automatically switches off. The control of the THb 200A should ideally be a twochannel control, either via the preamplifier outputs or the loudspeaker outputs of the car sound system. [. . . ] Next, use the crossover control 3 to select a filter setting that provides a well-contoured bass. you may have to alternately optimise the gain control setting 1 and the filter setting 3. A droning bass with excessive volume requires a filter setting with a low frequency. The phase control must be set so that the bass is integrated into the acoustic pattern as best as possible and not recognisable as an individual source. Also check your settings of the THb 200A with the bass control fully open and, if necessary, with activated loudness. Please use the return and collection systems available to dispose of the product. Subject to changes Anslutning 6 kopplas till plus batteri och anslutning 7 kopplas till minus jord. 9/: till de högtalarkablar (framtill eller baktill) som ligger närmast till vänster och höger. Please read these operating instructions before using the equipment for the first time. We provide a manufacturer guarantee for our products bought within the European Union. Please observe the following safety notes during the installation and connection. - When you drill holes, ensure that you do not damage any vehicle components. - If the positive and negative cable are extended, ensure that the cross section is not less than 2. - An incorrect installation can result in malfunctions of the electronic vehicle systems or your car sound system. [. . . ] The following control setting is recommended as basic setting before putting the device into operation: Sensitivity (gain) pos. Now slowly increase the gain control 1 until you can hear a clear amplification of the bass level. Next, use the crossover control 3 to select a filter setting that provides a well-contoured bass. [. . . ]