Aren't you trading one problem for another?
Speakers in general are piddly things in these slim TVs and have very little in the way of bass output. I can understand though that whatever frequencies the TV speakers do put out travels through the walls as vibrations. Having the TV on it's own stand and it's it's own speakers should solve that problem.
As I see it; the problem you are trading the initial problem for, is those stand mount speakers put out much deeper bass than the TVs speakers. While they aren't mounted to the wall like the speakers in the TV are, the deeper bass would just pass through the air and solid matter with ease.
Maybe the bass being heard in the room above is not as bad as what is heard from the TVs speakers when wall mounted?
One thing is for sure, the stand mount speakers sound a lot better than the TVs speakers; so there is that.
Makes sense to use them though, if it's better from a hearing less noise in the room above point of view, if you rarely using them solely for music where they were. Would be a shame for them to stay there and gather dust while you buy maybe small speakers or a soundbar to sit on the cabinet.
I have mine either side of my TV on stands. Like you, mine don't get used for much music now; they mainly get used for film and TV, but I did locate them there for dual purpose though. If had placed them somewhere just for music, they'd have probably been just sat gathering dust for a good while now; which as you have said for yours, is sad to see.
To be honest i was probably using the bass through the wall as an excuse to fix things from an audio side of things! We watched Gladiator last night and whilst it was louder than we normally listen to films it felt less boomy and considerably better. The trade off in annoyance upstairs is worth it for the increased experience for us
It also was probably the first time i've really noticed the benefit of that amp since i bought it over my previous one.
I've also found myself listening to music till late most of the weekend, something i didn't really bother to do and it's amazing the difference that positioning makes. No amount of increased spending can touch it for impact. I mostly listen to acoustic type stuff for 80% of the time so having big volume isn't an issue.
Now onto speaker thoughts.
Gonna tag
@lucid in here because he has huge experience of the most of the ranges out there (probably worth a new thread but laziness...)
We went to RS yesterday to get a feel for what my wife is happy with size wise. The salesman clearly saw who was boss and kept pointing out the smallest of the small floorstanders which was annoying as it increased the battle on my hands. He was trying to talk me into those with a small sub to add to the low end. I don't want that. Particularly since i'd have to try and wirelessly connect the sub. Also whilst my wife would prefer standmounts. I'm yet to see a stand which feels stable. My friends have all started having kids and when they come round i have toddlers running around who aren't used to speakers and also i have 2 dogs who run around like idiots!
I think i've established some basic maximum dimensions
Height - 100cm
Width - 25cm
Depth - 30cm
Because of where they are, they'll be fairly close to the wall <10cm. As such anything rear ported is out of the question. It's also pretty much agreed that satin/gloss white is the winner here. Unless the wood finish looks great which they often don't unless you get to a much higher price point. Price is up to around £1k possibly over and i'm very much open to the used market, however given my fairly tight criteria this could be tricky.
I mentioned in another thread i like the look of the Tannoy XT 6F, they're end of line now and can be had around £500. They're quite wide at 27cm though and given my 602's are only 23cm wide, they might look a bit boxy.
I liked the look yesterday of the Kef Q550 so they're going on the demo shortlist. Only concern is they only have 5" drivers and i'd like to get a 6/6.5" one just to help that low end. Also considered the MA Silver 200's. Again only use a 5" drive unitand also the last time i demo'd a paid of MA speakers (Gold range) i found them a bit bright and shrill which felt they'd get tiring. Not sure if the Silvers would also have that.
Also plan on listening to the Fyne F303? I know they get well reviewed for a fairly new brand. Excited to hear those. Could also consider the F501
The Q Accoustic Q3050 were ruled out by the wife. Not entirely sure why given i thought the rounded edges helped them look less boxy but they're out
RS do sell the some wharfdale floorstanders. Think they're the 11.3. Didn't have them in stock but given the curve to the cabinet they could look alright. Anyone heard them?
Ideally something like a B&W 603 would work. There's a local store with an ex demo model in white for £800 Only issue is they're quite deep. Bit given how slim they are i think they could work brilliantly. I like the B&W house sound. The speakers themselves aren't too high, but when on the plinth they do stand a little higher than i'd like. Given i have concrete floors i assume the plinth wouldn't be necessary?
Anything else i should be looking at?
From a dealer point of view. I have a Richer Sounds and Audio T in preston which are easy to get to. Audio Visual Online is in Bacup which isn't too bad and Peter Tyson is around 90mins away so very do-able.
