(apologies in advance for the length of this post, don't bother reading if you don't geek out about string gauges and tensions like me)
I started out on 5-string in B Standard but for the past 11 years, I've been playing 4-strings exclusively in E Standard tuning. I intend to return to playing 5-string, but I have been thinking of D Standard for both 4- and 5- string. I'm also maybe considering a 6-string bass.
Anyway, I was doing some research on string tensions, using the ancient D'Addario string tension guide as a starter, supplemented with the current figures D'Addario publishes on their website along with their sets.
I've always played .130/.135-.105-.085-.065-.045-.030/.032 for standard tunings (D'Addario EXL165, EXL165-5, EXL165-6; Rotosound RS77LD, RS775LD, RS776LD) but as anyone who has ever played a 5-string or 6-string in Standard tuning can tell you, even a .0130 or .135 is really just terribly floppy at B0. Even with a .145 bottom string, the heaviest I've seen instead for B0, I don't see myself tuning below C1 in the future.
There are, unfortunately, discrepancies between the original D'Addario tension chart (which was made back in the 1990s, I think) and the figures they currently publish on their website. D'Addario gives the following tensions:
(tension_chart_13934.pdf)
.045 G2, 42.8 lbs
.065 D2, 51.3 lbs
.085 A1, 48.4 lbs
.105 E1, 40.2 lbs
(website EXL165 page)
.045 G2, 42.52 lbs
.065 D2, 48.35 lbs
.085 A1, 45.34 lbs
.105 E1, 38.08 lbs
As you can see, even with a "standard" set of gauges, the E and G strings ends up significantly lower in tension, and the E should probably be increased to at least a .110 to balance the tension of the other strings, while the G should be increased to something a little heavier, possibly a .047 to .050 gauge, or maybe the D string should be lightened a bit. Unfortunately, D'Addario doesn't make anything between .045 and .050, anything between a .060 and .065, or anything between a .110 and a .120.
(tension_chart_13934.pdf)
.050 G2, 53.4 lbs
.110 E1, 46.2 lbs
.120 E1, 50.2 lbs
(website EXL230 page)
.110 E1, 41.35 lbs
(website EXL160BT page)
.050 G2, 50.3 lbs
.120 E1, 49.24 lbs)
The EXL160BT medium "balanced tension" set is:
.050 G2, 50.3 lbs
.067 D2, 51.09 lbs
.090 A1, 51.05 lbs
.120 E1, 49.24 lbs
I would prefer to maintain consistent string tension across the board, and I would prefer a D Standard set that is similar in tension to what I am used to at E Standard, so I have to say that, going by the old chart, the following gauges would be my preferences for D Standard tuning:
(tension_chart_13934.pdf)
.032 Eb3, somewhere above 49.0 lbs (assuming it doesn't break, highest figure given is D3, 49.0 lbs)*
.040 Bb2, somewhere between 42.5 and 53.5 lbs**
.055 F2, 50.0 lbs***
.070 C2, 47.7 lbs
.095 G1, 48.7 lbs
.130 D1, 48.7 lbs
Note that the current EXL220BT super light "balanced tension" set is
.040
.055
.070
.095
*The old chart lists an NWB034 "guitar/bass" .034 E3, 50.4 lbs. I would surmise it probably has a lighter gauge core than the XLB032 D3, 49.0 lbs. I don't think this is still available, or at least, I can't find a listing for it.
**D'Addario currently lists a .042 single, but no tension figures are given for it in the old chart. The website page for the current EXL280 piccolo set gives the tension as A2, 45.51 lbs, so tuning it up a semitone would probably be just about right. My feeling is this is probably a better fit than the .040. They also currently list a .025w single and a .028w single, if you wanted to do E Standard on a 6-string with a wound high F.
***They also currently list a .052 single, but again, no tension figures are given in the old chart. The EXL280 page gives it E2, 37.59 lbs. This is probably a better fit than the .055.
So, given all that. I'm going to try, for 4-, 5-, or 6-string D Standard tuning:
Eb3: XLB032
Bb2: XLB042 or XLB040 (nut cut for .042 string)
F2: XLB052 or XLB055 (nut cut for .055 string)
C2: XLB070
G1: XLB095
D1: XLB130
This way, I can:
buy single strings, or
buy the EXL280 piccolo set for the .032, .042, .052, and the EXL220BT set for the .040, .055, .070 and .090, plus a single .130, since it's often cheaper (not to mention easier) to buy sets, even if you end up with leftovers/duplicates/extras.
JustStrings (from whom I've happily ordered in the past for my experiments with custom gauges/tunings, no affiliation or financial interest) lists the EXL220BT at $19.95 and the EXL280 at $16.64. Singles are $5.18 each for the .032, .040, .042, 052, and .055; $6.25 for the .070; $8.03 for the .095; and $8.94 for the .130, so a whole set of 6 would cost $38.76. Buying the two sets plus a single .130 would be $45.53, and contain two extra strings, plus the .020p I wouldn't use, at all.
The extra .002 or .003 play in the two nut slots should not significantly affect tone or sustain if I'm using the slightly smaller string choices, and will make it easier to find strings in a pinch.
Truth be told, I prefer the tone of the NYXL strings to the regular XL, but the NYXLs aren't available in as wide a range of gauges. I've happily played XLs for years, so it's a compromise I can live with.
Now I just need to figure out the same for flatwounds...and then for rounds on guitar.