Cello Reference Sheet๐
Cello tuning๐
From low to high, the cello is typically tuned in fifths. I play a 5-string cello with a low F (F1 on the piano scale). A typical 4-string cello has its lowest string is tuned to C2.
F1 - 43.65353 Hz
C2 - 65.40639 Hz
G2 - 97.99886 Hz
D3 - 146.8324 Hz
A3 - 220.0000 Hz
Scale and string length๐
Scale length refers to the length of the string between the nut and bridge, also known as its vibrating length. On a 4/4 (full-size) cello, the scale length is usually between 27.17" and 27.4" (69-69.4 cm).
The length of a full-size cello string itself is about 40" (101.6 cm).
String gauge and tension๐
The D'Addario strings (NSS510) on my 5-string cello are thus:
F - 0.0815 in (2.07 mm)
C - 0.0540 in (1.37 mm)
G - 0.0390 in (0.99 mm)
D - 0.0340 in (0.87 mm)
A - 0.0305 in (0.77 mm)
They are "medium tension" with stranded steel core, flat-wound steel strings.
Flat-wound bass strings are available usually in sizes by 0.005. However, bass strings are designed for a 34" scale length instead of 27", the cello's usual scale length. Although shorter-scale basses existโI have two of them: a Kala U-Bass (scale length 21") and a De Rosa violin-shaped bass (scale length 30").
Using bass strings on a cello๐
Todo
I haven't done this yet, but flat-wound bass strings of a similar diameter as regular cello strings should work just fine...
Tuning a bass like a cello๐
You can, of course, tune a bass like a cello, and in fact, have a bass with a 30" scale length, which isn't as far from the usual cello scale length.
A bass scale usually goes like this (an octave lower than the four lowest strings on a guitar):
E1 - 41.204 Hz
A1 - 55.000 Hz
D2 - 73.416 Hz
G2 - 97.99886 Hz
The lowest string on a bass guitar is only one step lower than my cello with it's low F string, so I could try tuning it like this:
F1 - 43.65353 Hz (tune E string up 1 step)
C2 - 65.40639 Hz (tune A string up 2 steps)
G2 - 97.99886 Hz (tune D string up 4 steps)
D3 - 146.8324 Hz (tune G string up 5 steps)
Because a cello is tuned in fifths rather than fourths, the higher strings get progressively further away from bass tuning, and really stretches those top two strings!
However, by detuning the low note on a bass to C1 (an octave lower than a regular cello), I get a setup much closer to standard bass tuning. In fact, I don't even need to change the D string tuning:
C1 - 34.65 Hz (tune E string down 2 steps)
G1 - 49.00 Hz (tune A string down 1 step)
D2 - 73.416 Hz (same as normal bass)
A2 - 110.00 Hz (tune G string up 1 step)
I've tried it and it works quite well on both my basses, though that detuned low string gets a bit floppyโhaving a higher-tension string might help.