Innie-outie

Hard to describe, but easier when seen. I needed compactness for my IB, and I needed a certain width (fit between rafters), and I wanted the ability to 'flip' it open to gain access above the HT.

Hence, the Innie-Outie. One driver faces 'in' (the top one above), while the other faces 'out'. Defying traditional views, but making perfect sense (and the reason we of the IB cult do our thing), the back of the speaker moves as much air as the front. The innie-outie takes advantage of this by simply reversing the polarity of the outie driver. I used banana plugs and just rotated one. A quick test with the 9V battery showed that when the innie move in (to the center of the manifold), the outtie moved 'out' (which also means toward the center of the manifold).