1.The material is a cryptomeria and the thickness is 11 mm.

2.Cut the material with table saw based on the drawing.

3.Cutting a ditch using the straight bit of 15 mm. Processing of top and bottom plates. Start from convex.

4.Processing of the side plate. Start from the concave.

5.Repeat the process from the second time.

6.glueing.

7.Open the speaker mounting hole in the baffle plate.

8.Glueing the duct plate to baffle plate.

9.The bonded to the body by opening the terminal hole on the back plate. Then glued the baffle plate.

10.Finish in natural oil of watoco.

11.Attach the terminal to the aluminum plate of 2mm thick.

12.Connect the speaker cable. And, attach with screws.

13.speakers is dirt it so old.

14.Attach the cover of the PIONEER.

It enshrined in the audio room. It is small but bass that was refreshing appears. because of the vacuum tube amplifier.