Hello,
If you want a relatively fast sale, I'd start at $1,000 and accept offers to make people feel good about bargaining you down on the price. If you want to sit on them and wait for top dollar, go ahead and list them for $1,500 or more.
You'll most likely sell to a diehard Klipsch fan as the younger generations are starting to care less and less about good audio/video. They are watching shows/movies on their phones and listening to audio via mediocre airpod headphones and via Bluetooth on crappy portable speakers at best.