Do some trouble isolation. Is it both speakers? If no, begin swapping leads to isolate. If not, can you replace any components with something you have int he closet? It matters not if its all that good - just that its in working order.
I concur that this sounds to me much more like a dying power supply (early onset clipping) than a damaged speaker. I would immediately suspect that battery pack -- but dont know much about your specific components (except that I own a pair of Viennas -- and love them)
I concur that this sounds to me much more like a dying power supply (early onset clipping) than a damaged speaker. I would immediately suspect that battery pack -- but dont know much about your specific components (except that I own a pair of Viennas -- and love them)