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I bought these strings in October this year, as the cost and frequency of changing quality bass strings (Warwick EMP's) was getting a bit much. I had previously tried Overwater flatwound strings, but just didn't like the sound - too dull. The Thomastik-Infeld Flat Wounds weren't cheap though at about £66, but they had great reviews and shouldn't need changed very often (if ever!).
They are fantastic strings. They feel really smooth to touch, and ooze quality. They sound a lot brighter than other flatwounds I have heard/played. Also, there is a lot less tension in the strings (compared to the Overwater flats, and Warwick EMP's) and they are very easy/comfortable to play. I've played them every day since I fitted them 2 months ago and they still sound fantastic.
One review that put me off initially said that as the low 'B' was .136, you might have to modify your bass to get it to fit! This was not the case. I have a Warwick Corvette $$, and Warwick's own brand low 'B' is .135, so not much difference. Anyway, fitted perfectly without any modification. The high 'C' is .029, and sounds/feels really good. I've previously found the high 'C' can sound a bit 'thin' with some makes of strings, but not these....
Great strings - Highly recommended.
[url="http://www.thomastik-infeld.com/family-detail/jazz%20flat%20wound"]http://www.thomastik...%20flat%20wound[/url]