Question about Heco Ambient 88F

The RCA connections are located on the underside of the woofer together with the controls.
The woofer comes with 2 cinch L-pieces so that the cinch cables can be connected.
The inputs are labelled Line(R, L/LFE). My amp has a subwoofer output, which I have connected to LFE.
If the amp does not have a special subwoofer output, you can certainly use a line output (stereo), as the subwoofer has a crossover with an adjustable frequency of 50Hz/100Hz/150Hz.
I have a marantz PM6007 amp with 2 Heco Ambient11F speakers and the 88F subwoofer, sounds great.

Thanks for the information. Where are the cinch connections on the woofer? Can you see this in a photo?