40-55-80-95 Lenth 53 inches Phosphor Bronze wound strings were introduced in the early Seventies and have become the most popular acoustic string. Phosphor bronze wire is made from approximately 92% copper, 7% zinc and 1% phosphorous. Phosphor Bronze provides nice highs and lows with pleasant subtle overtones. Phosphorous is used to help reduce tarnish and corrosion.
I believe I've finally found the strings I've been looking for. The 40 - 95 phosphor bronze bass string are the best balanced I've tried thus far. I'm not a physicist so I can't claim to understand the fusion matching process, but whatever it is please continue to keep doing it.