Hi.
I have a past in car-audio just to give anyone a little info when i make claims or ask (silly)question it’s from there i justify why i ask them.
I purcase two Sub Gen3,with two weeks between. First one i notice allmost right out of the box it got like an more electrical smell to it. And when i started play some low’s i could really smell it. From the very first time the sub start play,the smell was there. But it cleared up a bit during the first days,so by the time i got my secound sub the only time i could smell the first Gen3 was play loud music over perhaps a few 3-4min tracks. The other Gen3 did not smell as much as the first one,and it cleared up like after two evenings watch some movies.
Then i got some Ikea Symfonisk Book Shelf speakers…..and guess what…..they smell EXACLY the same as the Gen3’s…. But they need to be “pushed” a little before they start making a smell. I got four of the Ikea BS(Book Shelf) and all of them smells.
I would belive that this perhaps is the thin sealer/paint on the voicecoil getting very hot from use to cause this smell….AND both of these speakers/sub are PORTED design. So i would not think bout it so much,other than if i start smell from the speakers,turn volume down. I am allso on the page that:It’s wise so be carefull with a new product/speaker. Break it in perhaps if not Sonos have done that for you before shipping(?)
For my Ikea BS i bought them secoundhand and i belive allmost all of them sat in a window or hidden away somwhere never to be used and they never had the chance to break in. Now i need to play with them so they stop smelling