[sdiy] shielding question

[Travis Thatcher]

Quick question.

I am trying to put together a live rack consisting of (in top to
bottom on the rack):  furman power conditioner, motu2408mkII,
patchbay, roland gr-1 reverb, diy tb3031 + tbDac.

before the reverb was fine, sitting on top of the rack. in this
configuration there's noise as it is resting on the 3031.  i can move
it up a space, but still some nice hum. when i turn off the 3031, the
hum is gone. all power is connected to the furman conditioner.  My
3031 is running off of a regular 15v ac wallwart, and the tbdac is
using a +_15v power one supply....i'm assuming this is the problem, it
really is kind of overkill.  anyway, in the long run i'm going to
rebuild a power supply for the 3031/tbdac combo, but does anyone have
any tips for shielding that I can use for a short term fix?

-T

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