Do you have a question about the Heco ULTRASPACE 510 A and is the answer not in the manual?
Connect the output from the preamp to the line inputs ③. Take care not to mix up the channels.
Use the 'High Level' inputs/outputs if your amplifier does not have a preamp output.
Your subwoofer incorporates an amplifier and must be connected to the main supply via the cable supplied.
This switch has three positions: “On”, “Off” and “Auto”. We recommend the "Auto" position.
This control enables you to set the level of bass which best suits your tastes.
This control sets the subwoffer's maximum frequency handling capacity.
Only use the type of fuse specified on the back of the amplifier.
Never increase the volume to such a level that the sound becomes distorted.