Yamaha YMRD2900A 4.5 Octave Acoustalon Marimba

Yamaha Intermediate Acoustalon Marimbas
    with Multi-Frame II
Acoustalon bars are produced from fiberglass reinforced
    plastic in a one-step manufacturing process to provide
    exceptional durability and a pure tone. Scientifically
    designed Sonic Tones Holes produced in this process
    give Acoustalon bars a tone similar to rosewood.
Graduated tone bars promote tone quality,
    volume and playability
Resonators feature a cut-away design and 2-tracking
    system that allows resonator height adjustment for
    pitch and tone control
Gas shock height adjustable frame is reinforced for
    rigorous performance situations. 1.5" square pipes
    border 3 sides of the frame to support additional
    instruments

Range:  4.5 octave
Bars:  Acoustalon with Sonic Tone Holes
Bar Size:  Graduating from 1.5" - 2.25" x 1"
Resonators:  Cut-away design and 3-tracking system
Height Adjustable:  35" - 38.25"
Weight:  134.5 pounds
Casters:  4" Oversized, 2 locking
Pitch:  A=442Hz