After struggling with sound loss and connection issues with this soundbar's sub and rear speakers, I have finally connected all three wireless speakers with cable and the results are fantastic.

I used screened 3.5mm jack stereo cables from DelayCON the longest at 15 meters.

And some Maxhood flat right angle 3.5mm jack connectors (as my soundbar is wall mounted and the jack points and on the rear of the soundbar).

To find the jack points on the sound bar they are behind a sticker on left rear with 2 screws on either side, simply peal off the sticker to reveal 3 female 3.5mm jack points for Sub, rear left and rear right.

The jack point on the sub is under the power button under a sticker.

The jack point on the rear speakers is on the right hand on the rear of the speaker in a vertical recess with a sticker to remove, this is quite tricky to get off.

Wire in all the cables then power off all the wireless speakers and power them back on, the link light will turn to orange (wired) and never drop out again.

These speakers are amazing when they work and now they are 100% working.

No more base drops and loss of rear sound.

I hope this helps people out, as I could fine no information anywhere on how to do this.