The prices in amazon for used speakers are at 50%. They only thing i dont know is how many years the have them and how heavy use they perform. Svs is a very good brand and it can afford heavy use. So, i have 3 options.
1) i stay with this sub. The last graphics from audyssey (falling at 40hz)they are permanent on a position on the corner. The weird thing is that from the whole corner ONLY ONE SPECIFIC place gives this graph and even if i turn it/push it 2 cm, it looses it and goes to a much much worse performance. So maybe it confuses the audyssey? Or it gives sub just to my 1st mic position? Dunno its very weird. Volume knob is at 35% and audyssey still gives -8db correction... is it ok?
2) i will complain to the shop and i if they accept i will take this instead
https://europe.yamaha.com/en/products/audio_visual/speaker_systems/ns-sw300/index.html
Preety small for ported subwoofer right?
3) or i will sell my sub alone, add so something like 100$ And take this
https://www.svsound.com/products/sb-1000-white-gloss-outlet used. With a little gamble.
I will read all your opinions about my choices, but i have to decide in 2-3 days max.