Destroyed Yamaha active subwoofer amplifier. The manufacturer didn't use flameproof elements as specified by Yamaha. Overheated component caught fire, which quickly grew in size thanks to airflow generated by the speaker. :
Amazon.com: Yamaha Audio 10" 100W Powered Subwoofer - Black (NS-SW100BL)
Yamaha DXS12mkII 1020W 12 inch Powered Subwoofer | Sweetwater
YAMAHA SW-AV1 Power Amplifier 160-Watt 6-Channel Subwoofer - MINT CONDITION | eBay
Yamaha HS8I 2-Way Bi-Amp Powered Studio Monitor (White) HS8IW
Yamaha DXS18 Active PA Subwoofer Speaker
Yamaha HS8S 8" Powered Studio Monitor Subwoofer | KraftMusic.com
Road Test: The New Yamaha DXS15mkII - ProSoundWeb
How To Connect A Subwoofer To An Integrated Stereo Amplifier - Appuals.com
Yamaha 8" Powered 100 Watts Peak with Active Servo Technology II Home Subwoofer - Black (NSSW050) | Visions Electronics Canada
Amazon.com: Yamaha Audio 10" 100W Powered Subwoofer - Black (NS-SW100BL)
DXS Series - Overview - Speakers - Professional Audio - Products - Yamaha - Canada - English
YAMAHA DXS-12MKII 800W Active Subwoofer (12" Cone), 134 dB SPL (DXS12MKII) | Lazada