I need to do my first strings change on my RBX 170 and I don't know which kind of strings I have to buy.

How can I understand which one are best for it?

  • For you to understand what's best, you need to try out several different sets. Reason - it's your best that counts. Someone else may say set xyz is best, but that's their opinion. It's what you play, how you play, how you like it set up, etc., etc.
    – Tim
    Commented Dec 6, 2016 at 14:04

1 Answer 1


Your bass has a 34" scale length, and shipped from the factory with roundwound strings fitted. If you like the feel of the strings, especially when the bass was new, then you simply need to find another set of long-scale roundwound strings.

The gauge of the strings fitted to four-string basses is most commonly 45-100 or 45-105. The numbers here reflect the diameter of the strings in thousandths of an inch. Manufacturers will report the scale-length their strings are made for.

Rotosound report the length and gauge of their strings as an integral element of the string packet design.

In the above image, Rotosound report the length and gauge of their strings as an integral element of the string packet design. The numbers '66' and '88' are their own proprietary cataloguing/branding system. Under these numbers it says "long scale", which indicates they will fit a 34'' scale length instrument. The gauges of the individual strings are listed under the name of the strings.

There are numerous string manufacturers, with many different string types available. A good idea might be to work out which famous bassist you like the tone of, and then find out what strings they use. There isn't really a wrong answer here, other than that you might intensely dislike the feel and sound of a set of strings your bass hero swears by.

  • I understand. What sould I chose then, If I'm looking for a deep round tone? I mean, I saw different string thickness... Should I go for something thicker?
    – abierto
    Commented Dec 6, 2016 at 15:40
  • Maybe. Also, note: thicker strings, other things being equal, make lower notes, so tuning them up to the same notes will require pulling them a little tighter, and you'll feel the additional tension in the strings when you play them. You may or may not like that feeling. You might also consider "flatwound" strings (also called just "flats"), instead of the roundwound strings that your bass probably came with. Commented Dec 6, 2016 at 16:45

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