Assuming you use 12ga cables you will lose about 1db in the cables. SPL loss will be less for larger guages and more for smaller guages. Besides the spl loss there is the obvious expenditure for such long cables. Now to answer your question about quality. There will be some loss in sound quality (perhaps a slight haze or loss of detail and esp. low-level detail) if your were to compare 8' to 40' cables. If it were me I would rearrange the system and furniture.
8 responses Add your response