Asked
— Edited

is it possible to solder a wire on to the backside off connectors off the speaker.
am asking cause i dont want to ruing the ez-b4.
i dont want to make a hole,just put a led behind the mouth.
There is an unamplified point too if you are going to a different amp.
led will go on whit avery letter he's speaks.can i di this also whit your idea?
It's not quite as simple as just adding an LED, you would need some clever processing to flash an LED on every syllable spoken by the robot. Connecting an LED to the speaker will just make the LED flicker a bit based on the volume of the sound (which can be achieved using digital ports and the SoundServo(EZB) control)
thank you all