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T3A Autoformer Taps


geoff.

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Hoping to repurpose these and not sure of the tap settings.

 

There are no numbers on any of the taps, unlike pretty much every other Klipsch autoformer.

 

Looking at schematics for the AL crossover, which seems to be the only one that used it, there are no indications of taps either.

 

At the risk of assuming, the middle top would go to the squawker and the bottom in and out are inconsequential?

 

 

 

 

 

2C5F0239-1915-4F2A-88AA-DFCED8DD3CA0.jpeg

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8 hours ago, geoff. said:

 

Looking at schematics for the AL crossover, which seems to be the only one that used it, there are no indications of taps either.

 

 

2C5F0239-1915-4F2A-88AA-DFCED8DD3CA0.jpeg

 

I believe the 2.7mH indication on the schematic is the inductance between either end tap and the -6db tap.  If you have an LCR meter, measure the inductance between each pair of wires.   One pair of wires should measure around 10.8mH, so label one of those wires tap 5 and the other tap 0.  Label the third wire tap 3.  If all goes well the inductance between tap 5 and tap 3 should equal the inductance between tap 3 and tap 0...around 2.7mH.

 

Mike

 

 

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