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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: connecting audio gears directly to ac without plugs

Posted by Palustris on April 18, 2015 at 11:12:54:
You definitely don't want to connect your device's power cord directly to the AC voltage source, but there is no reason not to eliminate the IEC connector and use a captive cable. Several of my recent builds eliminated the IEC connector because it serves no purpose if you are happy with your cable choice and does away with two connectors. The cable MUST be wired properly for your jurisdiction. In the USA that means that the hot wire goes to the fuse, then to the power switch and finally to the power transformer primary. The neutral wire goes to the power transformer primary and the ground wire must be grounded near the cable input to a sturdy bolt such as the bolt and nut that hold the power transformer to the chassis. See the schematic below and notice there are two power switches and two power transformers since the plate voltage will only be available when the filament transformer is energised.