DangerDan Posted August 23, 2017 Share Posted August 23, 2017 I seem to be having very little luck powering my Darkglass super symmetry, regardlesss of what power supply i use. I have tried: A 9v 500mah single plug - causes a very quiet hum that ducks when the threshold is engaged A 9v outlet on my palmer pwt 08 - causes an awful churning sound that makes me panic and unplug straight away (only when the pedal is engaged) Daisy chained off of my korg pitchblack tuner output - causes it to make a chuffing noise that synchs with the meter lights going out as the comp releases The only time i have managed to have it silent is when i powered it off a mates mxr dc brick, but the problem with this is that that power supply is insufficient to run my zoom b3n, which the palmer does perfectly due to its isolated 500mah 9v circuit (isolated from the rest of the standard 9v outputs). Anyone got any ideas why this may be happening? I have tried most of the obvious trouble shooting of having it plugged in on its own, different cables etc. The pedal isn't faulty as it works as expected with the mxr, and makes the noises as described above otherwise, so it has to be a supply issue. Quote Link to comment Share on other sites More sharing options...
fretmeister Posted August 23, 2017 Share Posted August 23, 2017 Get an isolated supply with sufficient current. I run mine either with a Gigrig Power Generator set up, or with the Warwick Rockboard XL battery power supply (the latter isn't isolated, but it's not connected to the mains either - and I only have that, a tuner and an EBS Sheehan Deluxe) Quote Link to comment Share on other sites More sharing options...
DangerDan Posted August 23, 2017 Author Share Posted August 23, 2017 (edited) I have a palmer pwt 08 which is an isolated power supply that runs up to 2000mah, the SS needs much less than 100mah. Even when the SS is the only thing connected to it it makes a horrible churning noise. The only time i have heard it silent is o the non isolated mxr brick. Even plugging it into a 9v 500mah single adapter it makes a noise. Edited August 23, 2017 by DangerDan Quote Link to comment Share on other sites More sharing options...
fretmeister Posted August 23, 2017 Share Posted August 23, 2017 Weird! No idea then. Sorry. (Unless the Palmer only has 2000mah in total and the individual outputs share it in limited amounts?) Quote Link to comment Share on other sites More sharing options...
DangerDan Posted August 23, 2017 Author Share Posted August 23, 2017 I imagine it's a total 2000mah yes. But i get the noise when i run it on its own on the power supply, and the SS only requires 30mah (thirty!). Quote Link to comment Share on other sites More sharing options...
fretmeister Posted August 23, 2017 Share Posted August 23, 2017 I'm definitely out of ideas then. Mine is one of the quietest pedals I've ever known. Even if I'm just using a 1-Spot and daisychaining a few other things. Do you do your testing at the same time of day? Is the tumble dryer on? Have you got an old and crappy lamp somewhere close? Do you live within the boundary of the LHD? Quote Link to comment Share on other sites More sharing options...
DangerDan Posted August 23, 2017 Author Share Posted August 23, 2017 Hahaha! I'll send it off to CERN for testing next! I know it's quiet as it is perfect on my mates psu, just not on any of mine! I will be trying it in different places round the house tonight to see if that the case, as im fast running out of ideas! Quote Link to comment Share on other sites More sharing options...
Al Krow Posted August 26, 2017 Share Posted August 26, 2017 (edited) Not sure whereabouts you're based, but I've got a sneaky feeling that there is just more background interference in Central London with tubes, rail, telephone and power lines all throwing out EM interference - Grangur and I certainly found that his single coil pups on a couple of his basses had much more pronounced coil him than at his place 50 miles from the Big Smoke! I've developed a bit of a liking for humbuckers in consequence! Edited August 26, 2017 by Al Krow Quote Link to comment Share on other sites More sharing options...
dannybuoy Posted August 26, 2017 Share Posted August 26, 2017 Have you tested with the compressor as the only pedal in the chain? Quote Link to comment Share on other sites More sharing options...
0175westwood29 Posted September 2, 2017 Share Posted September 2, 2017 [quote name='dannybuoy' timestamp='1503738313' post='3360607'] Have you tested with the compressor as the only pedal in the chain? [/quote] This as the compressor will also bring up very quiet noises in a mix as well Quote Link to comment Share on other sites More sharing options...
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