Hi. I have a Saturn aventree transmitter from av amp via the RCA preout connecting to a JBL Charge 3 in bathroom but the delay is too much compared to the rest of the flat! The rest of the flat speakers are wired from the amp. Can anyone recommend a speaker suitable for bathroom (doesn't come in the shower with me so resistant should be fine, just steam proof is needed), where the latency wouldn't be noticeable? I'm thinking a aptx speaker would resolve this? Thanks