A:AnswerYes - providing your TV has RCA or 3.5mm outputs although I don't recommend using the 3.5/aux audio jack. I've tried this with computer speakers on my Sony TV and got a slight hum. These speakers have a great sound for the price but if you are looking for home theater audio, these won't shake the walls, but will sound much better than low end sound bars or the TV speakers.
Good luck!
A:AnswerYou have an amp, so wired speakers would be better. Your crosley could connect directly to powered speakers but you would better to get some Polk t15 speakers or budget pair if passive/wired speakers that suit your budget
A:AnswerYou would need a Bluetooth splitter like https://www.bestbuy.com/site/aluratek-bluetooth-audio-receiver-and-transmitter/5715709.p?skuId=5715709