Thank you for supporting our product. 
 
Yes, this is normal and works as designed.
 
The rear speaker ejection speed is controlled by a damper mechanism, which ensures:
<ul style="margin-bottom: 0px;padding-inline-start: 48px;"><li style="font-size: 12pt;font-family: &#39;Open Sans&#39;, sans-serif;color: #101828;">
Smooth and consistent ejection speed
</li><li style="font-size: 12pt;font-family: &#39;Open Sans&#39;, sans-serif;color: #101828;">
Protection against sudden spring-release impact
</li><li style="font-size: 12pt;font-family: &#39;Open Sans&#39;, sans-serif;color: #101828;">
A balanced and safe user experience
</li></ul>
The ejection speed has been optimized and validated to match the feel of the handle deployment mechanism.
 
This behavior is intentional and does not indicate a defect.
 
If you have any other questions, please don&#39;t hesitate to contact Nebula Customer Support at <a style="text-decoration: none;" href="mailto:service@soundcore.com" target="_blank">service@soundcore.com</a>  for further assistance.