Originally Posted by Gooddoc
The load amperage on this is only 2a. Not nearly sufficient for amplifiers. The one I'm using has 30a load contacts.
Yes, I forgot to mention I use this, https://emotiva.com/products/et-3
You're correct that the trigger specs are all over the place on prepros, so using an independent trigger device makes it so I don't have to worry about that.
My bad, I was thinking of a relay to drive the low-power remote power circuit many professional amplifiers use, not switching the AC input power. There are high-current SS relays for that as well but I did not look for one. Ironically, decades ago I used a simple circuit to drive a similar high-power relay to turn on my subwoofer's amplifier and crossover box, a DIY solution long before every AVR had a trigger output (or before AVRs were even a thing). But, I was thinking he needed something to drive the DCi's remote on/off interface, not switch the AC wall power. The remote interface is described in the amp's manual. IIRC you just need a (low-power) relay to short the terminals.
For switching wall power, the relay needs to be in a shielded and preferably metal grounded box, and good construction practice should be followed to ensure it is safe. Or you can buy one of the various commercial power strips that has a trigger input (SmartStrip, Furman, etc.)
Originally Posted by Balbolito
I have the same trigger expansion module by Emotiva. how do i connect the relay to it? sorry but this is all new to me.
I have one of those as well (not in use at the moment). It comes with cables IIRC, so use one cable to connect your AVR's trigger output to the input of the trigger repeater, then cut one end off another cable to drive the relay. One end will plug into the trigger repeater, and the other (bare wire) end will attach to the relay. Center pin is positive or use a cheap voltmeter to figure out which wires need to go to the + and - coil connections of the relay. If you need cables pick up a few from Monoprice, Parts Express, or similar -- it's a mono 1/8" plug (like a small headphone plug but mono instead of stereo). They probably have some they call "trigger cables".
If switching AC power, the relay should really be in a box with outlets so AC wiring is not exposed.
Sorry for the misunderstanding - Don