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In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.
Post Subject: The type of the flange and some plans.Posted by Romy the Cat on: 8/26/2010
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 jessie.dazzle wrote:
When doing the final assembly, you might want to use Nylock type self-locking nuts:
http://www.nylocknut.com/

Looking at the images, this might require that you use slightly longer bolts (the few threads exposed beyond the existing nuts are those that start to taper to a smaller diameter and may not offer enough interference with the nylon ring of a self-locking nut).

This type of self-locking nut can be re-used.

Available at Lowes and Home Depot.

Yes, there are many different types of self-locking nuts; we will be using them when it will be the final assembly. This is just a development assembly and we lock the flange juts to center the flange’s parts, to see how the frame bars will be applied (not in the picture yet), and to sand out the internal transition in the horn.

BTW, there was some consideration of what type of flange to use. I wanted initially to have it done with metal angle but my carpenter convinced me that wood will be better. He did not use 2x4 for flange but face-to-face plywood. He fell that this connection will be not only stronger but even air-tight. My horn will only one disassembleable join – between the first and second sections. The join beaten the sections 5 and 6 will be permanently sealed by 5’ screws and glue.

I think today the main frame for the left channels will be done. Another day or two will take to beef it up and to put the secondary frames and I hope that sometimes during this weekend I will be able to mount a driver into the whole horn. This will be very important as I will be able to measure how low the Fs of the lorded driver will drop and from that I will be able to give the approximate demotions of the back chamber. Hey, I will be able even to hear how this thing sounds in the basement…

Can’s wait…
The Cat

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