The all-new Frequency Filtered™ putter shaft is all about feel. And if you like to feel every putt, then you are about to feel real good. This radically new putter shaft is designed to significantly improve the ability of all golfers to perceive or feel where ball impact occurs on the face. This instantaneous feedback results in improved putting ability since the golfer learns to consistently stroke more putts on the sweet spot of the putter. Feel becomes clearer and so does the confidence to make solid contact to sink more putts.
The big idea is similar to the tuning performance of a quality digital stereo system. When listening to a radio, any static noise will interfere with the sound quality, but, when dialed-in, a good stereo system filters out the static noise and leaves only sounds that are meant to be heard. This is comparable to what happens with the Frequency Filtered™ putter shaft. There are many different types of vibrations that occur when a putt is struck. Some of these vibrations are always there, but don’t provide the player any useful feedback about the putt. Like tuning-out the static noise on a radio, the Frequency Filtered™ shaft filters out these ‘static noise’ vibrations, leaving only vibrations that provide feedback about how the putt was struck.
The feel factor was quantified by studying the vibration response characteristics of many putters. These vibration response characteristics were identified to be desirable or undesirable. The new Frequency Filtered™ putter shaft is designed to transmit the desirable characteristics and attenuate or filter the undesirable characteristics. Thus, the shaft's vibration characteristics have been specifically engineered to maximize good vibration feedback while minimizing bad vibrations. The resulting shaft product is not a mere damper that eradicates vibration. Highly dampened putter heads – either by face materials or shaft composites – are often numb, and do not allow the golfer to interpret the quality of ball impact. The objective of this new technology was not to remove all vibration response, but to help the golfer make consistent ball contact, and thus consistent ball role for greater accuracy and distance control.
Testing by following the time history plot details the vibration response of two putters through impact at their respective sweet spots. Standard modal impact test techniques were used along with a small PCB accelerometer attached to the shaft adjacent to the grip. The red trace was acquired from a putter equipped with a standard steel shaft while the black trace was acquired from a putter equipped with the Frequency Filtered™ shaft. The putters were identical except for the shaft. The same time and amplitude scales were applied to each trace. Both traces contain the identical modal information over a predetermined frequency range while the vibration response is very different across other frequency ranges. Hence certain vibration characteristics are allowed to pass while other vibration characteristics are attenuated.