Audio sub woofer repair

Hi
I have a four year old Audica sub woofer part of a home audio system that has stopped working. I have tried it with another amp but no joy. It has power but produces no bass. 
Can anyone recommend somewhere in the area that may be able to test and possibly repair this item. 
Many thanks. .
I live in the Baza/Caniles area but will travel of required.

Try Cyber Centro in Huescar. I know as well as computers hes does some work with audio items. Ive seen a load od disco stuff in there a few times.

Many thanks. .. Can you tell me where he is located if possible?

Next to the ferret shop ( Ferosan) set back on your left heading through the town out to the Repsol garage and towards the polligno.

Thank you for the info will try it. .

If you can unscrew the back to gain access to the speaker itself, try touching a 1.5 Volt battery across it's terminals. You should hear something. If not they it's likely the coil in the driver has blown (I had this problem with a B139 about 10 years ago.

OK I'll see if I can get to the terminals