Unofficial Mackie User Forums > DL1608/DL806/DL32R/ProDX Mixers
Anyone buy a 1608 power supply lately?
4mal:
I'm not crazy about the output connector on those generic supples. No locking. I suppose if it a spare then you could temp in some kinda strain relief but 'd rather have the locking ring...
redwood:
--- Quote from: 4mal on March 26, 2017, 07:06:48 PM ---I'm not crazy about the output connector on those generic supples. No locking. I suppose if it a spare then you could temp in some kinda strain relief but 'd rather have the locking ring...
--- End quote ---
True that. I usually tie even the original one with the locking ring to one of the XLR outputs with the velcro tie that I use to keep it coiled anyway.
WK154:
--- Quote from: 4mal on March 26, 2017, 07:06:48 PM ---I'm not crazy about the output connector on those generic supples. No locking. I suppose if it a spare then you could temp in some kinda strain relief but 'd rather have the locking ring...
--- End quote ---
Turns out that the locking ring can cause intermittent power, better off without it.
redwood:
--- Quote from: WK154 on March 27, 2017, 02:01:00 AM ---Turns out that the locking ring can cause intermittent power, better off without it.
--- End quote ---
Well I just discovered that interesting twist myself.
A bit of history. I have had a Mackie SRM350v2 for awhile that has always been the canary in the coal mine for interconnect ground issues, noise and the like. This is true for the DL1608 and my Crest XR20 which I use for my house sound gig. The 350 always hums a bit or has some kind of noise going on so when connected to just about anything other than a mic, so I stopped using it for gigs and just kept it as a keyboard amp for rehearsal. Quiet enough for that application.
So tonight I have a gig and it's been while since I used the 1608 so I started setting up my show and testing. Hooked up the SRM350 to main outs and heard some line noise - like computer digital hash and the like. Figured it was the 350 so I disconnected it and hooked up a Behringer B110, noise is gone. Figured hypothesis was confirmed, but I dug deeper. Plugged the 350 back in and using a ground lift cord I have and the noise went away.
Hmmmm.....could this be noise on the power supply ground, I thought? after manipulating the locking ring a bit and noticing some noise attenuation (but not elimination) I decided to try my backup PSU (which is made by Condor, and rated for medical devices) and it's dead quiet.
That appears to confirm that the locking ring may be more trouble than it's worth, to me anyway. Tonight I'm using my backup. Gaff tape already packed.
WK154:
Long time ago I realized that the ground return was connected to the signal ground in the power supply hence the change to an isolated supply. Noise gone. Lots of discussion on this forum on the subject.
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