一种总体呈变形十字形状的变幅杆，用于沿垂直于螺柱轴线的方向传递超声能量。这种变幅杆已用于拉丝加工以及“绕角焊接”。
A horn generally in the shape of a modified cross, which is used to deliver ultrasonic energy in a direction perpendicular to the stud axis. This horn has been used in wire drawing and for "welding around corners".