Powering multiple effects in one enclosure

[jghfslk]

I recently completed a multi build effect and have everything functioning as it should but am getting noise.  I'm planning to try a huminator in hopes that the noise will be reduced.  Right now I have the power for the effects all going straight to the power plug.  I'm concerned that using a huminator will cause a significant voltage drop.  All the effects together will draw quite a bit of current.

Would it work to use a 18V power source and adapt the huminator layout using 9V regulators?

I tested each effect individually before wiring them together in the enclosure and didn't notice any issues with noise.  The noise is reduced if I place a buffer before the effect.

Any help or suggestions are greatly appreciated!

[induction]

Can you tell us what the circuits are, and in what order? Schematics would be even better.

What kind of noise are you getting?

[jghfslk]

I built 4 1776 Multiplex Jr. circuits, 3 TH custom madbox circuits, and 1 aion echoplex preamp.

Multiplex Jr. http://1776effects.com/wp-content/uploads/2015/03/Multiplex-Jr-BOM.pdf

The Madbox build document can be downloaded from this page  http://diy.thcustom.com/product-list/#

Aion Echoplex  https://aionelectronics.com/wp-content/uploads/2016/01/aion-ares-echoplex-preamp-documentation.pdf

The input goes to a switch that determines whether the Echoplex Preamp is at the beginning of the chain or the very end.  The delays wired to give a number of different series/parallel combinations (all in series, all in parallel, 1 and 2 in parallel 3 and 4 in parallel in series with each other, etc.)  I'm sure I'm not explaining this very well but I could maybe draw a diagram up later if that would help. I used 4pdt toggles to have the delays either go through the madbox splitters or bypass them and right into the next delay.

I don't have it hooked up at the moment but if I am remembering correctly the noise was a cackling type of sound.  I haven't measured the current draw for the total of all circuits combined together but my power supply is labeled at 500ma and I don't think it would exceed that.

Thanks!