There are a couple of so called audiophile companies that have made filter and regulated DC supply boards that fit in the place of the AC supply but I haven't tried any of those. A ground lift firewire cable was required between the Mac Mini and the 2882 to be relatively noise free. My audio interface for most of the 10 years was a Metric Halo 2882 that was powered separately. I used Traco converters and settled on 60 to 100 watt versions at 12 or 15 volts to get through the boot phase. I ran a Metacorder setup for 10 years and found that I had to use DC-DC converters to fully float the Mac Mini power supply or there would be some level of bus noise introduced into the audio system. The mains power supply is rated at over 80 watts to cope with the boot requirements and whatever the user has added in the way of external firewire and USB devices. If you are using a bus powered audio interface then you need to build that into the equation. If using a regulated supply, the crunch occurs during boot as current draw can peak at over 4 amps. 8 to 1.5 amps at 12 volts or 10 to 20 watts. However.ĭepending on what is installed in the Mac Mini such as hard drives, SSD's and RAM, basic current draw can be in the range of. The mod removes the internal AC supply and then makes a direct connection from an external DC supply to the Mac Mini's main board which no doubt has it's own DC-DC conversion. My 20 models would work just fine off the over 17 volts of a freshly charged V-Lock battery. MP 6,1 Mac Pro 2013 A1481 Power Supply Test I have a Mac Pro 2013 A1481 with a suspected bad power supply, I would like to test the bus bars from the PSU to the logic board with a. The Unibody Mac Mini's will run on a wide range of DC input voltages.
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