Bass tube switching off itself..??

[Harishvar]

Hello,
I have a bass tube and it switches off itself and i have to hit or bang it with moderate force to make it work again..Sometimes when the car runs and goes to any bumpy area it again starts to work..and sometimes it goes off automatically..

someone has to sit in the dicky of my car where my woofer is kept to, bang it again and again to make it work..i think there is some loose connection inside the woofer...the amplifier is built in already..this happens frequently and i don't know what is the problem with the bass tube.

.it is Hamaan HM-8AW 8" Active sub woofer..Any helps would be appreciated..thank u in advance..

 

[Phillip Corcoran]

Open it up & check for any loose connections or cracked soldered joints etc.

 

[Harishvar]

Open it up & check for any loose connections or cracked soldered joints etc.

i checked but i didnt find any loose contacts..but still it switches off itself..???