I currently have a soundbar 700 setup in my front room with accompanying 700 sub. In the dining room I have a 500 home speaker. I often have music playing in both rooms at the same time but there's a lack of lower end grunt in the dining room. I was wondering if I could buy the cheaper sub for the second room. I realise it would only work when playing music via the app (thats fine), but was wondering if both subs could be connected to the soundbar in the front room. Distance doesn't appear to be an issue as I've moved the 700 into the dining room and it connects and appears to work okay.