Howard Passman wrote: > Hi, Unfortunately my SB Radio died recently. It was my second most used > SB and I really miss it for outdoor use. I have a few Raspberry pi's so > I thought I'd try and make a replacement of sorts. I have a RSP3 with a > HiFiBerry DAC+, a 7" touchscreen and a 2.5" hard drive. I would like to > put the whole hing in a box with a couple of small speakers. > > I purchased this power supply for the 12v and 5v combo output. It has > enough current on the 5 volt out to run everything with the pi and not > get the under voltage issue. And of course it has enough output on the > 12 volt supply to run the 18Watt amplifier. Here are links to Amazon and > both products... > > https://www.amazon.com/gp/product/B00L063VF4/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 > https://www.amazon.com/gp/product/B005T7EZM8/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1 > > Now on to the issue. The 5 volt supply works great and if I run > headphones off of the HiFiBerry DAC+, it's dead quiet. The 12 volt > supply seems to work well on the amplifier and has no problematic noise > unless I try to run both, the RSP3 and the amplifier at the same time. > Then I get a high frequency squeal and some clicking noises. The noise > does not increase in volume if I turn the volume up, but is loud enough > at idle. > > If I run either one off of a separate supply, there is no discernible > noise. > > Any help would be greatly appreciated. > > Howard Is it a DAC+ or an AMP+? The DAC+ runs from the 5V Pi power supply and the AMP+ runs the Pi from the AMP+ power supply. Two supplies are not required or permitted.
https://www.hifiberry.com/build/documentation/connecting-power-supply-and-speakers-to-the-hifiberry-amp/ Howard Passman wrote: > Hi, Unfortunately my SB Radio died recently. It was my second most used > SB and I really miss it for outdoor use. I have a few Raspberry pi's so > I thought I'd try and make a replacement of sorts. I have a RSP3 with a > HiFiBerry DAC+, a 7" touchscreen and a 2.5" hard drive. I would like to > put the whole hing in a box with a couple of small speakers. > > I purchased this power supply for the 12v and 5v combo output. It has > enough current on the 5 volt out to run everything with the pi and not > get the under voltage issue. And of course it has enough output on the > 12 volt supply to run the 18Watt amplifier. Here are links to Amazon and > both products... > > https://www.amazon.com/gp/product/B00L063VF4/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 > https://www.amazon.com/gp/product/B005T7EZM8/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1 > > Now on to the issue. The 5 volt supply works great and if I run > headphones off of the HiFiBerry DAC+, it's dead quiet. The 12 volt > supply seems to work well on the amplifier and has no problematic noise > unless I try to run both, the RSP3 and the amplifier at the same time. > Then I get a high frequency squeal and some clicking noises. The noise > does not increase in volume if I turn the volume up, but is loud enough > at idle. > > If I run either one off of a separate supply, there is no discernible > noise. > > Any help would be greatly appreciated. > > Howard Sent from my SM-G900F using Tapatalk ------------------------------------------------------------------------ slartibartfast's Profile: http://forums.slimdevices.com/member.php?userid=35609 View this thread: http://forums.slimdevices.com/showthread.php?t=107557 _______________________________________________ diy mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/diy
