StringSpec
String finder

Browse all 788

Head to head

Gosen AK Pro CX 16 (1.30) vs Wilson NXT 15L (1.35)

They split the measurements 3–3. The widest gap is ball bite, where NXT 15L (1.35) is 23 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Gosen

AK Pro CX 16 (1.30)

Nylon · 16 ga

Wilson

NXT 15L (1.35)

Nylon · 15L ga

Stiffness lower = softer, kinder on the arm
15823rd pct
15215th pct
Tension loss lower = stays where you strung it
143rd pct
1913th pct
Energy return higher = livelier, more free power
9378th pct
9272nd pct
Spin potential higher = more spin off the string bed
6.586th pct
7.090th pct
Ball bite higher = grabs the ball harder
0.47869th pct
0.56692nd pct
String friction lower = strings slide and snap back
0.0739th pct
0.08126th pct

Bars are percentile against all 788 strings, and the marked side is the one that measures better, which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.

Which one wins, by problem

Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.

Swapping between them: what tension?

Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions. The calculator takes your own tension.

Coming from AK Pro CX 16 (1.30) at 52 lb

String NXT 15L (1.35) at 54.2 lb 24.6 kg

Coming from NXT 15L (1.35) at 52 lb

String AK Pro CX 16 (1.30) at 49.9 lb 22.6 kg

Hybrid: what if you used both?

Estimated, not measured. No hybrid combination has been tested as a bed. These figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.

AK Pro CX 16 (1.30) mains / NXT 15L (1.35) crosses

Stiffness18th pct · 1 measured
Tension loss7th pct · 1 measured
Energy return74th pct · 1 measured
Spin potential87th pct · 1 measured
Ball bite75th pct · 1 measured
String friction13th pct · 1 measured

NXT 15L (1.35) mains / AK Pro CX 16 (1.30) crosses

Stiffness17th pct · 1 measured
Tension loss8th pct · 1 measured
Energy return73rd pct · 1 measured
Spin potential89th pct · 1 measured
Ball bite91st pct · 1 measured
String friction21st pct · 1 measured

Open this in the hybrid builder

Which goes dead first?

Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it, not when the string breaks.

AK Pro CX 16 (1.30)

~39 hours of play

NXT 15L (1.35)

~36 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Gosen AK Pro CX 16 (1.30) Nylon16find15814936.50.4780.073
Wilson NXT 15L (1.35) Nylon15Lfind15219927.00.5660.081

Add a third string AK Pro CX 16 (1.30) in full NXT 15L (1.35) in full