Keyboard Stand & Folded Horn Passive Amp

Last Christmas, I gave my sister an inexpensive electric piano, a Yamaha P-45. She loved it, but then wanted a stand.At first, I thought I'd build a simple table. Then I noticed that the piano's speakers fired straight down from the bottom. There was one small, 4-1/2 inch speaker at each end. Hm! La...
By: nerdyH

Continue Reading »

from Instructables: exploring - featured http://ift.tt/2sYzcXM
via IFTTT