Our Exclusive Hydraulic Height Adjustable Frames Our height system is unlike anything else currently available.  It involves the use of a hydraulic system which enables one person to easily adjust the height of the keyboard throughout a range of seven inches.  Simply turn one single crank located on the bass end of the instrument for a nearly effortless height adjustment.  The hand crank folds away under the bar rail when not in use.  As you will notice in the pictures below, the system is totally integrated into the frame and hidden from view.  This enables us to use our current all-wooden frame design without many modifications.  Most other height adjustable instruments have metal frames which lose the beauty of  all wooden construction.    *click on these pictures for larger views                              Our AWESOME one crank height adjustment system.                                      Height system all the way down.                Height system all the way up.     Another view with the instrument at the highest height setting.                       Close-up on hydraulic cylinders for height system. Picture on the right shows built-in  height measurement guide. *twin crank system also available which offers greater flexibility for those who travel with the instrument often.   Back to the concert marimbas page     Coe Percussion: Custom Built, Professional and Student Mallet Percussion Instruments

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