IWISTAO 6.5 Inch Labyrinth Speaker with Paper Cone

IWISTAO 6.5 Inch Labyrinth Speaker with Paper Cone

Demo video

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IWISTAO 6.5 Inch Labyrinth Empty Speaker Cabinet 

DIY IWISTAO 6N3 Vacuum Tube Preamplifier Finished Board SRPP Circuit

DIY IWISTAO 6N3 Vacuum Tube Preamplifier Finished Board SRPP Circuit

This is a finished vacuum tube preamplifier board with standard SRPP circuit. The preamplifier tube uses 6N3, and the rectifier uses 6Z4 tube rectifier. The background noise is better controlled, making sound better. The board is debugging-free, simple to make and design is reasonable, the noise is relatively low, also there is no impulse current at startup, and a speaker protection circuit is added.

Photos step by step

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IWISTAO 6N3 Vacuum Tube Preamplifier Finished Board 6Z4 Pure Tube Rectifier HIF Including Toroidal Transformer DIY

Swallowtail tenon and tenon mortise of IWISTAO Solid Wood Empty Speaker Cabinet

The dovetail tenon (swallowtail tenon) is a right-angle connection node of flat wood. The terrace-shaped tenon can make the corner of the workpiece join with high strength and avoid disengagement under force. Dovetails are very common in wooden furniture  because of their good mechanical properties.

Most of our empty speaker cabinet adopt this structure, like as our 5 to 8 inches full range speaker cabinet, and 2 ways or 3 ways one.

The video demo swallowtail tenon and tenon mortise in IWISTAO empty speaker cabinet, and how we polished it.