can someone snap a good shot of how much room is under the back seats?

also, when they're down, is this space lost?

basically, can something fit under there (amps) and the seats still fold down completely if needed?

 

Try this thread:

https://www.chevyhhr.net/forums/how-tutorial-library-21/seat-removal-carpet-install-13261/

 

thanks!

it looks as the rear seats sit almost directly on the floor. dont think im going to have room

 

Yeah if you want to hide amps I dont think the rear seats are an option. You could try the front seats, but there are heater ducts under there.
If you are up for some interior disassembly, there is some room in the rear quarterpanels.
Most people just use the storage area above the spare tire, or even remove the spare too and install there.