Conclusion.

Below is a link to an excellent tutorial created be one of EZ-Robots valued community forum members, Dave Schulpius, who goes through the steps of adding amplified or non amplified speakers to the EZ-B for improved sound quality where the EZ-B speaker is just not enough for your needs...

Breaking Out the Sound from the EZB4

As always, any questions or suggestion can be submitted on the Community Forum.

Happy Building. :)

Tutorial created on 15th October 2015.