Vitavox S2 etc screw on horn mounting rings

[Magna Audio]

A nice turning project in solid brass.
There are ~4.3" in diameter with a 2.160" 16 threads per inch thread to screw on to Vitavox 1.5" compression drivers. They would also fit similar Phillips drivers that are 1.378".

The finished articles - polished outer surface and countersinks for the M6 bolt heads

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I can also make them in aluminium.

[Magna Audio]

Next up a heavier than standard counterweight for a Technics SL-1210.
In stainless steel and featuring nylon sleeve insert and polished finish.

https://uploads.tapatalk-cdn.com/20171007/4a8d190a0eb70ffafec1194bd32a4b1f.jpg

[Magna Audio]

Busy in the workshop, I am making a series of adapters for various compression drivers of 1.378 and 1.5" throats to enable fitting to 2" throat horns.

Here are the freshly turned adapters in birch ply



Test fitting on a Vitavox S2

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Testing / listening with 400Hz tractrix horn on an S2

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Special attention is paid to get the perfect driver to throat fit and smooth transition.

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I have also made sets of these for 250Hz tractrix horns.