D'Addario · ProSteels Bass · 45-65-85-105

D'Addario EPS165 (45-65-85-105) in D standard (bass) on a 34"–37" multiscale scale

45-105 Regular Light Top/Medium Bottom, Long Scale, XL ProSteels Bass Strings on a bass with a 34"–37" multiscale scale, tuned to D standard (bass) (F2 C2 G1 D1), pulls 139.5 lb63.3 kg620 N in total and 34.9 lb15.82 kg155 N per string on average. That is a loose feel for a bass. The set is moderately uneven (spread 7.9%). String 1 (F2) deviates most: −10% from the set average.

Total tension: 139.5 lb63.3 kg620 N
Average per string: 34.9 lb15.82 kg155 N
Feel: loose; medium ≈ 43.6 lb19.78 kg194 N per string; Set your own preferred feel
Balance: moderately uneven; spread 7.9%

Tension per string

The bronze dashed line is the medium-feel target: the average per-string tension of a 45-105 set on a 34" scale in E standard (bass) (43.6 lb19.78 kg194 N). Loose and tight are measured against it.Line thickness follows the string gauge; textured lines are wound strings. Hover, tap or tab to a string for details.

#	Note	Hz	Gauge	Item	Type	Length	Tension	vs avg
1	F2	87.3	.045	PSB045	wound	34"	31.5 lb14.30 kg140 N	−10%
2	C2	65.4	.065	PSB065	wound	35"	37.8 lb17.14 kg168 N	+8%
3	G1	49.0	.085	PSB085	wound	36"	37.4 lb16.97 kg166 N	+7%
4	D1	36.7	.105	PSB105	wound	37"	32.7 lb14.85 kg146 N	−6%
Total							139.5 lb63.3 kg620 N

Open in the calculator

Multiscale (fanned frets): string lengths change linearly from 34" (treble) to 37" (bass).

Similar sets in D standard (bass), 34"–37" multiscale

Set	Gauges	Avg per string	Total	Feel	Balance
EPS165 (this page)	45-65-85-105	34.9 lb15.82 kg155 N	139.5 lb63.3 kg620 N	loose	moderately uneven
Elixir 14652	45-65-80-100	35.1 lb15.94 kg156 N	140.5 lb63.7 kg625 N	loose	moderately uneven
D'Addario EXL170	45-65-80-100	35.7 lb16.20 kg159 N	142.9 lb64.8 kg635 N	loose	moderately uneven
Elixir 14677	45-65-85-105	37.0 lb16.76 kg164 N	147.8 lb67.0 kg657 N	loose	moderately uneven
D'Addario NYXL45105	45-65-85-105	37.0 lb16.79 kg165 N	148.1 lb67.2 kg659 N	loose	moderately uneven
Elixir 14052	45-65-80-100	37.4 lb16.96 kg166 N	149.5 lb67.8 kg665 N	loose	moderately uneven

Best match for a medium feel in D standard (bass), 34"–37" multiscale

Ranked by how close every string is to 43.6 lb19.78 kg194 N (lower deviation is better).

D'Addario ECB81 45-65-80-100 deviation 10.5%, average 40.3 lb18.29 kg179 N, moderately uneven
Elixir 14102 50-70-85-105 deviation 10.6%, average 43.3 lb19.64 kg193 N, moderately uneven; same gauges: 14702
D'Addario EXL160 50-70-85-105 deviation 11.2%, average 40.7 lb18.48 kg181 N, moderately uneven

More for the EPS165

Other tunings on 34"–37" multiscale: E standard (bass), Drop D (bass), Eb standard (bass)

D standard (bass) on other scales: 34", 35"

About these numbers

Tension is calculated, not measured: T = μ · (2 · L · f)², where μ is the string's mass per unit length (unit weight), L the vibrating length (scale) and f the pitch (A4 = 440 Hz, equal temperament). kg means kilogram-force: 1 kg ≈ 9.81 N ≈ 2.205 lb.

How a set feels also depends on the guitar's setup: action height, break angle over the nut and saddle, string length behind the nut and bridge, and your playing style. Plain strings feel stiffer than wound strings at the same tension. Use these figures to compare sets, not as an absolute measure of feel.

Sources

D'Addario product page, tension chart for EPS165 (2026-10-31): unit weights derived from the published tensions, cross-checked across sets.