Panasonic SB-WA17E Service Manual page 11

Step 1: Remove 4 screws.
Step 2: Remove the Woofer 2 by detaching the (+) red and (-)
black wires.
7.2.4. Disassembly of the Power Amp
Unit
Step 1: Lay the speaker unit as shown. Remove 7 screws from
the bottom of the Speaker Cabinet Assembly Unit.
Step 2: Remove 3 screws from the rear panel.
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SB-WA17E / SB-WA17EB