To ensure there is no damage caused to the motherboard, remove that before any further action. Once that is done, lift up the charging port to remove the left speaker (looking at the tablet from the back).
In order to remove the right-side speaker, remove the volume rocker, carefully lift up the surrounding metal back off the device, lift the silver tape from the charging port to remove the second screw, and then remove the charging port. This will give you access to the second speaker. If you have any confusion about this process, the images in the HP Slate 7 speaker repair guide can assist you further.