Patent ID: 7161078

Claim:
Bass mallet percussion instrument having bars and a resonance box ( 12 ), whereby anchored in its side walls ( 14 ) are receiving pins ( 18 ) for bars, and said resonance box ( 12 ) is divided into a plurality of resonance spaces ( 22 ) that are delimited from one another by vertical separating walls ( 28 ), of which resonance spaces each is allocated to one or a plurality of bars, characterized by the following features: (a) a first resonance space ( 22 a ) is allocated to the two lower-most bars and a second resonance space ( 22 b ) is allocated to the subsequent three bars; (b) the bars ( 11 a ) that are essentially allocated to said first and second resonance spaces ( 22 a , 22 b ) have a width that is 10–30% wider than the other bars ( 11 b ); (c) said first and second resonance spaces ( 22 a , 22 b ) are each provided with a cover plate ( 26 a , 26 b ), each of which has a sound hole ( 28 a , 28 b ).