Kirschbaum Xplosive Speed Playtest
Tension(s) used for playtest 55 lbs
Regular string set up Volkl Cyclone 16 strung up at 52 lbs
Racquet used for test Head Graphene 360 Speed MP
Control/Power of test string Low powered. Not dead or completely low power but these strings were towards lower power. I strung it at 55 lbs because the string felt stretchy and I did not want a trampoline effect. But I am guessing if I went a couple of pounds lower, the power level would be right in my wheelhouse.
Control was great from the first hit. I had good depth control on both forehand and backhand. Serves had good spin and kick. I had excellent dwell time and I felt that helped in directing all my strokes. Launch angle was normal, nothing worth noting that I saw...
Feel (Stiff? Mushy? Muted? Crisp? Comfortable?) Very comfortable for a poly. It was somewhat muted but I did not feel any sort of vagueness or disconnect with ball upon contact with stringbed. Off center hits were not jarring. This was the feature I liked the most in this string. Kirschbaum strings usually feel stiff to me at these tensions but not this one.
Spin Decent enough spin but not like the spin I get from my usual Volkl Cyclone. When I was stringing this up, I realised how stiffer the Cyclone is compared to this and I was in a way ready to be disappointed, but not the case. I still think you can generate decent enough spin. I do feel that it lacked the ball bite considerably, something that I am used to with Volkl Cyclone.
Durability Durability was okay but not great. Even though I am at 12 hour mark, I know for a fact that the string will snap on my next hitting session. I could see notching beginning at the one hour mark. I hit big usually and this would have snapped sooner if I wasn't stuck for the last week and coming few weeks hitting with lower level players who don't hit back hard (since all my hitting buddies are traveling the world this summer having fun and I'm broke with college loans to pay off and bills to take care of lol)...
By comparison, Volkl Cyclone in same gauge, I have to cut out after it is dead and I see minimal notching with it.
Playability Duration To be honest, after the initial tension drop off from stringer and strings settling in, I have not seen any change in playability duration. Balls are coming off string bed with same consistency and I am not struggling with not spraying or deadness. So playability gets good marks from me.
Tension findings (if you installed this string again, would you select the same tension? Explain answer.) I strung it up about 3 pounds tighter because I felt it was stretchy and I would lose control but in all honesty I feel that in doing that I lost a little bit of power. If I had kept it at 52 lbs, my usual tension, it would given me the perfect blend of power control and feel I am used to. The string is arm friendly and even at 55 lbs my arms were happy so that is a plus.
List any additional thoughts (optional) I was pleasantly surprised at how comfortable weaving crosses was. I also liked that there was zero coil memory issues so I had no problems. I am not exactly an expert stringer and I almost always string 2 piece. Coil memory is a big factor for me.
The string also left marks on the balls, like a few other playtesters mentioned. No big deal for me but just an observation.
Finally, a big thank you to Tennis Warehouse
@TW Staff for giving me this opportunity. I really appreciate it.
Faris