I'm after a little advice. Recently I moved out of my flat for a few weeks while it was refurbished. I returned to find that many of my possessions were missing. Among these were my speaker cables and the speaker isolation cones. I'm trying to replace these items and others that have been thrown out. I bought my hi-fi system 27 years ago from a specialist retailer. I've been looking at their website and to my disbelief, I find that the cheapest isolation cones are £75 for a pack of three. In my previous set-up, I had three cones per speaker on the retailer's advice. Are the cones really necessary? Will they make much difference? The speakers are Mission 760i and they stand on shelves.