Equalizer for bluetooth speaker mode

[needkelly]

Hello guys, I have a lumia 920 , I recently brough a JBL CHARGE 2, very good by the way, but not be able to change the equalizer in Bluetooth mode is really frustrating, even the nokia asha of my friend works great, I really do not understand.
wanted to know if there is such possibility in lumia denim, or if someone here can change the equalizer in Bluetooth mode.

sorry for the english.

thanks