The bottom of the speaker stand is unornamented. The broken lines illustrate portions of the drawings that form no part of the claimed design. The shade lines in the figures show contour and not surface ornamentation. The stipple shading in the Figures shows contrast. By way of example, the areas with stipple shading may represent translucency, transparency, or a contrast in material or color (e.g., the stipple shading may represent a matte finish material or color, in contrast to a glossy finish material or color).