In Reply to: Wiring autoformer as HF attenuator posted by Randal P on July 30, 2016 at 14:21:42:
those are beautiful looking autoformers in pictures of custom crossovers. Maybe a screw-block strip and a spade lug on the horn driver wire would look professional and be practical.put the tap wires from the autoformer to one side of a screw terminal block, then move the wire with the spade lug which goes to your horn to the desired tap.
Lets say the striped red wires in the picture below are from your autoformer and the single aqua wire will go to your Altec 802/32a horn.
for a fixed crossover point, the capacitor value gets smaller as more attenuation is used as the reflected impedance to the "primary" is higher. you could also use an appropriate resistor in parallel with your 802 so the reflected load would be the same to the highpass cap and not have to change the capacitor.
Karlson Evangelist
Edits: 07/30/16 07/30/16 07/30/16
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Follow Ups
- RE: Wiring autoformer as HF attenuator - freddyi 21:56:38 07/30/16 (10)
- RE: Wiring autoformer as HF attenuator - Randal P 16:03:32 07/31/16 (9)
- RE: Wiring autoformer as HF attenuator - freddyi 16:32:59 07/31/16 (8)
- RE: Wiring autoformer as HF attenuator - Randal P 16:51:55 07/31/16 (7)
- RE: Wiring autoformer as HF attenuator - freddyi 17:41:42 07/31/16 (6)
- RE: Wiring autoformer as HF attenuator - Randal P 18:37:17 07/31/16 (5)
- RE: Wiring autoformer as HF attenuator - freddyi 21:32:03 07/31/16 (4)
- RE: Wiring autoformer as HF attenuator - Randal P 09:03:54 08/01/16 (3)
- RE: Wiring autoformer as HF attenuator - D Mike 09:22:48 08/01/16 (2)
- RE: Wiring autoformer as HF attenuator - Randal P 12:53:49 08/01/16 (1)
- RE: Wiring autoformer as HF attenuator - freddyi 15:28:05 08/01/16 (0)