Speakers aren't all working
 

So I'm having an issue where my my back seat speakers aren't working, if someone sits on the left side and lays back the speaker cuts off and the right one isn't working at all any ideas? Appreciate it

we need more information, please.

what car (year/trim)?

is the head unit and speakers factory or aftermarket?

if aftermarket, pics of the install?

sounds like bad connections.