Took delivery of sixteen FeONIC F4 audio drivers this morning. Their dimensions are smaller than I expected, which is not a bad thing. Combined with my Omnivox supply, I now have twenty-six separate audio sources. My original intention was to use sixteen, but this number was influenced by my budget. (Each FeONIC device is around £150). Now though, I have hopefully enough to make an impressionable sound on the street – as long as all the different windows resonate in a roughly similar manner!