Need help to build 12" active sub for yamaha avr

[Naveenbnc]

Hello All,

I want to build a 12 inch active sub to use with Yamaha YHT196.
(Budget is 10 to 15K) Excluding wooden cabinets.

Can you give suggestions on the below options please...
OPTION1: A plate amp kit to add to my existing passive sub from YHT196

OPTION2: A good amp kit, and 12" subwoofer.

OPTION3: A suitable amp and 12" subwoofer from CAR audio systems.
(Car audio components are easily available everywhere in hyderabad. I will take care of 12V power supply etc)

Thanks & Regards
Naveen