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Paul Dorman Paul Dorman is offline
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Default [OT] Adding volume control to electronic device

On 1/14/2021 10:02 PM, geoff wrote:
On 14/01/2021 4:52 am, Scott Dorsey wrote:
gray_wolfÂ* wrote:

Remember the old drive in movie theater speakers with the volume
control?=


Those were 70V system.Â* 70V constant power going down the cable, each tap
has a step-down transformer, then an L-pad (not a simple pot but a three
element pad so the transformer always sees an 8 ohm load)


"3 element pad" - wouldn't that be a T-Pad ?


Yes, or a "Pi"-pad.