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DIY・自作 管共鳴( QWT / TQWT )スピーカー パート4 - 配線と最終組み立て / DIY QWT ( TQWT ) Speakers Part 4 - Wiring and the final assembly

DIY・自作 管共鳴( QWT / TQWT )スピーカー パート4 - 配線と最終組み立て / DIY QWT ( TQWT ) Speakers Part 4 - Wiring and the final assembly

On goes the terminal. The good stuff usually has two nuts on one bolt to stop it from loosening. Since for me, this speaker was very experimental, I used a lower grade one than I normally use. I would recommend a double nut terminal in most cases.
The manufactures usually use a type of terminal that is bolted on to a plastic mount, but that is to shorten the assembly time using a powered screwdriver so as to saving man-hours. Personally, I would like to have the least effect on the sound quality (For the record, not like I have tested the theory.) so I prefer to use these types of terminals.
The wires used were an OFC with Teflon insulation as I remember. The wire gauge (AWG) was 18 if I remember correctly.
There are 4 strands for each color, but this is to double wire the unit.
Like so. The reason why is that I would like to lower the resistance of the cable as low as possible so in order to achieve this. you would need the wire thick as possible, but at the same time that will challenge the assembly mechanically, so the double strands.
On goes the glue. You can see the baffle (front panel) connected to the rear panel. This for structural rigidity. The reason it's not connected thoroughly is that the reinforcements were from leftover material. This is because a 1820 mm by 910 mm ply wood (Japanese standard) was used.
I've mentioned before but if you do not have clamps, you could use screws after the glue has slightly dried for a precise build. This cabinet will have the edges shaved off at a 45 degrees angle so I wanted to avoid screws at that time. The theory is that smaller the unit the sharper the focus of the sound image/stage so I wanted to do a slim baffle as possible build. The structure being a cabinet width of 12 cm, shaving off the edges won't make much of a difference, but since it was an experimental build, I went for the most slimmest possible.

As you can see, the cabinet is quite slim even with the corners. A CD size width.
In Japan, it's called a "Mentori Kanna" which means chamfering plane. If you adjust the blade carefully and take your time, there's not much of a technique involved. If you are interested, I'd say go for it!
Yet a few steps to go.


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