Oh, how I love the audio devices........
They're even going down in price!!
Some oldies from ECN: (I think the links to the fine devices are still valid)
https://www.electrical-contractor.net/ubb/Forum1/HTML/004279.html https://www.electrical-contractor.net/ubb/Forum1/HTML/002238.html (I personally love the rewarding, robust low and midrange tones I get from my #6 Aluminum Triplex service drop.)