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Head to head

Luxilon Alu Power Vibe 16 (1.25) vs Signum Pro Poly Megaforce 17 (1.19)

Alu Power Vibe 16 (1.25) leads on 5 of 6 measurements. The widest gap is ball bite, where Alu Power Vibe 16 (1.25) is 33 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Luxilon

Alu Power Vibe 16 (1.25)

Polyester · 16 ga

Signum Pro

Poly Megaforce 17 (1.19)

Polyester · 17 ga

Stiffness lower = softer, kinder on the arm
20876th pct
21382nd pct
Tension loss lower = stays where you strung it
3457th pct
3661st pct
Energy return higher = livelier, more free power
8735th pct
8734th pct
Spin potential higher = more spin off the string bed
5.056th pct
4.851st pct
Ball bite higher = grabs the ball harder
0.53387th pct
0.44754th pct
String friction lower = strings slide and snap back
0.10772nd pct
0.09353rd 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 Alu Power Vibe 16 (1.25) at 52 lb

String Poly Megaforce 17 (1.19) at 50.7 lb 23.0 kg

Coming from Poly Megaforce 17 (1.19) at 52 lb

String Alu Power Vibe 16 (1.25) at 53.3 lb 24.2 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.

Alu Power Vibe 16 (1.25) mains / Poly Megaforce 17 (1.19) crosses

Stiffness79th pct · 1 measured
Tension loss58th pct · 1 measured
Energy return35th pct · 1 measured
Spin potential55th pct · 1 measured
Ball bite84th pct · 1 measured
String friction68th pct · 1 measured

Poly Megaforce 17 (1.19) mains / Alu Power Vibe 16 (1.25) crosses

Stiffness80th pct · 1 measured
Tension loss59th pct · 1 measured
Energy return35th pct · 1 measured
Spin potential53rd pct · 1 measured
Ball bite61st pct · 1 measured
String friction57th 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.

Alu Power Vibe 16 (1.25)

~23 hours of play

Poly Megaforce 17 (1.19)

~22 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Luxilon Alu Power Vibe 16 (1.25) Polyester16find20834875.00.5330.107
Signum Pro Poly Megaforce 17 (1.19) Polyester17find21336874.80.4470.093

Add a third string Alu Power Vibe 16 (1.25) in full Poly Megaforce 17 (1.19) in full