Head to head

Tecnifibre E-Matrix 17 vs Tecnifibre NRG2 18 (1.18)

They split the measurements 3–3. The widest gap is ball bite, where NRG2 18 (1.18) is 78 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Tecnifibre

E-Matrix 17

Nylon · 17 ga

Tecnifibre

NRG2 18 (1.18)

Nylon/Polyurethane · 18 ga

Stiffness lower = softer, kinder on the arm
1437th pct
15114th pct
Tension loss lower = stays where you strung it
1914th pct
2018th pct
Energy return higher = livelier, more free power
9274th pct
9378th pct
Spin potential higher = more spin off the string bed
2.44th pct
2.65th pct
Ball bite higher = grabs the ball harder
0.3594th pct
0.51482nd pct
String friction lower = strings slide and snap back
0.15294th pct
0.19898th pct

Bars are percentile against all 791 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 E-Matrix 17 at 52 lb

String NRG2 18 (1.18) at 47.5 lb 21.5 kg

Coming from NRG2 18 (1.18) at 52 lb

String E-Matrix 17 at 56.8 lb 25.8 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.

E-Matrix 17 mains / NRG2 18 (1.18) crosses

Stiffness10th pct · 1 measured
Tension loss16th pct · 1 measured
Energy return75th pct · 1 measured
Spin potential4th pct · 1 measured
Ball bite14th pct · 1 measured
String friction95th pct · 1 measured

NRG2 18 (1.18) mains / E-Matrix 17 crosses

Stiffness10th pct · 1 measured
Tension loss16th pct · 1 measured
Energy return75th pct · 1 measured
Spin potential4th pct · 1 measured
Ball bite74th pct · 1 measured
String friction97th 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.

E-Matrix 17

~36 hours of play

NRG2 18 (1.18)

~35 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Tecnifibre E-Matrix 17 Nylon17find14319922.40.3590.152
Tecnifibre NRG2 18 (1.18) Nylon/Polyurethane18$14.9615120932.60.5140.198

Add a third string E-Matrix 17 in full NRG2 18 (1.18) in full