Panasonic SB-W740

and insert the Wood chip.
Step 5: At the boss area push up as arrow shown to open the boss.
Caution:
Do not exert strong force as it may damage the Front Cabinet Assembly.
1.3. Disassembly of Woofer
Follow (step 1) to (step 5) of item 1.2.
Step 1: Remove all 4 screws from the Woofer.