Head to head
Klip K-Boom 18 (1.20) vs Solinco Confidential Soft 16L (1.25)
They split the measurements 3–3. The widest gap is ball bite, where Confidential Soft 16L (1.25) is 23 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.
Measured, side by side
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.
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K-Boom 18 (1.20)137th
Confidential Soft 16L (1.25)97th
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K-Boom 18 (1.20)388th
Confidential Soft 16L (1.25)411th
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K-Boom 18 (1.20)327th
Confidential Soft 16L (1.25)272nd
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K-Boom 18 (1.20)423rd
Confidential Soft 16L (1.25)476th
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K-Boom 18 (1.20)419th
Confidential Soft 16L (1.25)355th
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K-Boom 18 (1.20)175th
Confidential Soft 16L (1.25)348th
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K-Boom 18 (1.20)399th
Confidential Soft 16L (1.25)423rd
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 K-Boom 18 (1.20) at 52 lb
String Confidential Soft 16L (1.25) at 50.9 lb 23.1 kg
Coming from Confidential Soft 16L (1.25) at 52 lb
String K-Boom 18 (1.20) at 53.1 lb 24.1 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.
K-Boom 18 (1.20) mains / Confidential Soft 16L (1.25) crosses
Confidential Soft 16L (1.25) mains / K-Boom 18 (1.20) crosses
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.
K-Boom 18 (1.20)
~25 hours of play
Confidential Soft 16L (1.25)
~27 hours of play
Both strings in full
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Klip K-Boom 18 (1.20) Polyester | 18 | find | 190 | 32 | 87 | 6.2 | 0.463 | 0.075 |
| Solinco Confidential Soft 16L (1.25) Polyester | 16L | $13.99 | 194 | 28 | 87 | 6.5 | 0.525 | 0.081 |
Add a third string K-Boom 18 (1.20) in full Confidential Soft 16L (1.25) in full