Old Spiro Formula

Discussion in 'Strings [DB]' started by dylanjohnson, Mar 1, 2014.

  1. Hi all,
    My bass has always sounded choked to me with Spiro Orchestras, but I put on an old set (maybe 12 years old) that I had around and they were noticably less tense than a newer set that I had last year. I know there have been some threads about whether the strings were reformulated or not, but does anyone know more about this? Could it be that they were the 4/4 vs the 3/4 size?
    Dylan Johnson
  2. The making was not changed, but the material they got for their strings might have changed.
    Old strings get longer over time, so the tension migh be a bit lower and the strings also get more flexible over time when played.
    The 4/4 Spiros have less mass on the same length unit, so the tension of the 4/4 Spiro is lower when used on the same scale length as a 3/4 Spiro.
    The only way to find out if it is a 3/4 or 4/4 string is to compare their lengths. The 4/4 Spiros are about 8cm (3 inch) longer than the 3/4 Spiros.
  3. Thanks!