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Signum Pro

Poly-Plasma Pure 16L

Polyester Gauge 16L 1.31 mm In production

Lab measurements for Signum Pro Poly-Plasma Pure 16L, ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

221lb/in

lower = softer, kinder on the arm

Tension loss

41%

lower = stays where you strung it

Energy return

86%

higher = livelier, more free power

Spin potential

5.6

higher = more spin off the string bed

Ball bite

0.467COF

higher = grabs the ball harder

Snapback

0.083COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 221 lb/in · 88th pct

Stiffer than 88% of strings tested.

Tension loss 41 % · 68th pct

Sheds more tension than 68% of strings tested.

Energy return 86 % · 25th pct

Livelier than 25% of strings tested.

Spin potential 5.6 · 71st pct

More spin potential than 71% of strings tested.

Ball bite 0.467 COF · 65th pct

Grips the ball harder than 65% of strings tested.

Snapback 0.083 COF · 30th pct

More string-on-string friction than 30% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

Prince Tour XR 16 (1.30) 97% match Kirschbaum Black Shark 16 (1.30) 97% match Kirschbaum P2 16/1.30 94% match Wilson Ripspin 16 94% match Kirschbaum Helix 17 93% match Prince Tour XC 15L 92% match

More from Signum Pro

What these numbers mean

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.

Compare Poly-Plasma Pure 16L against 789 strings Find the right string for me