Thank you everyone for replying to my cry for help. I really appreciate all of your thoughts. It becomes apparent that I have a huge amount to learn, as ohms, sensitivities, db, etc, are understandable words and definitions are easy to find. However, as a real novice but true enthusiast, I am lost when you start to combine these words. How do I start to learn ? Is there a beginners bible, a book where you learn without being talked down to ? If not, why has nobody from this excellent forum not written one ? It would be a huge help and might encourage many novices, like myself, to enter the black art of sound. Again, very many thanks to those who have replied and started me on my journey of discovery. Julia