Tony Lake Posted July 12, 2012 Share Posted July 12, 2012 Hi I have a slight problem I need addressing. Basically I have a small rack with a firewire interface (used for playback outputs), 8Ch Rack mounted passive DI and an SLX4 wireless reciver in a rackmount. at the bottom of the rack are the AC240V-DC12V adapters for the interface and the SLX4, however due to the proximity to the DI's (which are passive if it makes any difference), the outputs on the DI channels buzz quite considerably. I know the obvious thing is to move the power supply out for each show but this can cause problems with things getting accidentally unplugged, long term damage to the flimsy DC adapter cables, and frankly makes a mess of the rack. SO; that aside My question is, shy of a 1U rack mounted brick of lead, is there another way around this problem? Thanks Tony Link to comment Share on other sites More sharing options...
Sound Man Posted July 12, 2012 Share Posted July 12, 2012 How close is the DI unit to the various power supply's? Can you put the DI unit at the top of the rack and leave the supplies at the bottom for the most seperation? David Link to comment Share on other sites More sharing options...
Sully Posted July 12, 2012 Share Posted July 12, 2012 My question is, shy of a 1U rack mounted brick of lead, is there another way around this problem? One larger (probably better made and less noisy) 12V supply broken out to supply all the various devices that need 12V?If you're replacing several there's no reason it should be any/much heavier than the individual power bricks. David. Link to comment Share on other sites More sharing options...
Tony Lake Posted July 12, 2012 Author Share Posted July 12, 2012 They are already as distant as they can be unfortunately. The idea of unifying the power supplies seems like a good idea. I'll have a look see what I can find! Thanks Link to comment Share on other sites More sharing options...
timsabre Posted July 13, 2012 Share Posted July 13, 2012 Replace your transformer-based 12V power unit with a switch-mode power supply unit, then it won't cause hum. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.