Thinks my sub amp/driver is faulty, give out a "pop pop...." sound whenever there is heavy bass and there's a loud "boom" when turning off the main switch. Did call the local service center, but the charges was like USD140. So now I' thinking iit's worth servicng or just get a new one? Hope someone can give some advice or help me in troubleshooting or repair it myself. Thanks for listening.
Good Day !
PS: my sub is 3 yrs old model PSW 202 Polk Audio.