A speaker mount includes a support structure attachment, an adjustable mount connected to the structure attachment and including a first connector, and a speaker attachment including a second connector. Like all sterlings, the improved alloy is at least 92. The swing characteristic of the latter allows the plate to be mounted and demounted with the plate generally horizontal, but as the support platform is rotated, it swings up through approximately 90\xb0 so that the wells are now substantially horizontal and the plate is now substantially vertical, so that centrifugal force pins the liquid at the bottom of the wells. Accordingly, the spiral pipe can be produced while suppressing the action of a restoring force that restores the reinforcing material-attached profile strip to its original radius of curvature.