Hi Rodrigo,
I believe jack_control is only installed if JACK is built with dbus support. I don't
know whether that applies to the official mac installl package. If you install dbus via
homebrew, you could build JACK from source, passing the --dbus flag:
./waf configure --dbus
./waf build
./waf install
jack_control needs the python dbus bindings, however, which I wasn't able to install
on OS X 10.13, which is where I'm trapped due to ancient hardware (dbus-python depends
on patchelf
https://github.com/mayeut/patchelf-pypi, which won't build for me).