WebBike World recommended the speakers SMH5-A0305 which don't appear to be on your site. I did find the part number SMH5-A0306 for speakers. Did the SMH5-A0306 replace the SMH5-A0305?

The speakers I received with my SMH5 units seem reasonably large, what is the difference between them and the SMH5-A0306 ones?

Thank You

Dan