Trying to build a rotating platform

[DC_Guy]

Hi so I am trying to build a rotating platform for a system consisting of two 12in. subs approximately 60 pounds, I would like it to rotate 180 degrees and then back with the flip of a switch if possible. I have absolutely no experience in this what-so-ever and all of the auto places want to charge me a ridiculous amount of money to do it. So if anybody would please help me with ideas or where I might look to start it would be greatly appreciated

 

[satya430]

Ok , could you be a lil more clear about what you are keeping on the platform ? their dimensions ? speed of rotation ? mode of actuation ?