<< A tech in my area told a dealer that Yamaha bass strings are made
differently than other strings. Something that is unique to only them. >>
I don't know if it is unique, but their windings go in the opposite direction
of Mapes. The core wire is also more brittle than other strings I have used.
If you flex the string in front of the coil while tightening it up, they
will break more easily, ie. they cannot stand much abuse.
One thing that is unique, in my experience, is that the strings are cut
to proper length when you get them, and all the beckets seem to line up on
their own!
Ed Foote RPT
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html
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