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I really have no clue what I'm doing wrong here! Help!

To me (a retired electrical engineer) it sounds like you’re facing something like a brown-out. IOW your Mosky power supply is capable of delivering x-amount of power but the pedal collection you’ve plugged into it tries to draw more than that.

If you care to understand, try this. Make a table with a column for pedal names and a separate column for each of its output voltages. For each pedal on your board that is plugged into the Mosky enter the current draw in mA (from its label) in the column matching the voltage you plug it into. (If a pedal lets you choose either of two voltages, enter only the one you use. If a pedal has a different value for idle vs. “On” use the larger value.) When all pedals are accounted for in your table, add up each column. Compare that total to the spec for the Mosky. If any column’s total is more than what the spec says for that voltage, there’s the problem. If no total exceeds the spec but they get close then the combination of them may still be working it too hard. Yeah, it ought to be able to do it but, truth be told, not many can.
 
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If I remember correctly the WTDI is a 15V AC input.
A rather unusual electrical input, most power supply don’t support it and feed DC to the pedals.
It’s also the reason why I sold the pedal.
Too bad because it sounded great.
 
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It's cool to see an EHX Mole out there. How do you like it? I've had one for awhile and love mine.
 
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I bought mine used, so it didn't have the power supply. But I'll be ordering one soon. I went through all the options for making it work, and it's definitely just needing more power. Hope that'll all work soon enough!

I’ve bought a non- OEM replacement for my WTDI about 4 years ago, as the wires original supply transformer that came with the unit wore and exposed the wires after a while. As far as I know, a WTDI requires 14 volts, and will not work on a 9 volt Hot Spot.
 
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I could buy into that if it didn't come with the proper wall wart already :D But if it breaks or he loses it...
Whoops...missed the part where he said he'll be needing to order one.

Because now our OP needs that supply and will buy one.
So now the company will make money.
Looks like you were right about that after all :D
 
Always has to be one in every effects forum crowd.

Anyway, stuff like your WTDI wanting special power requirements and reversed power plugs in today's world really bugs me. There are a million preamps out there that don't require 400 mA and center positive. What could it possibly do that requires 400 mA, and why, in a world where center neg is the standard, are companies still building pedals like this?

Eden takes the line that 15v significantly reduces signal noise.

Which I believe, to be frank: I've run a WTDI since they were introduced, quite often going straight into PA in some pretty electronically noisy rooms, and it's always been totally silent.
It was only when I started putting a proper pedalboard together that I even realised what a problem electronic noise could be - and that was with pedals from Boss and TRex (good brands!).

But I agree that Eden has slightly shot itself in the foot. It wasn't such a problem when Eden only made a single pedal, the WTDI, but now that they offer a whole range, and if they are totally committed to the 15v thing, they should really have thought of offering their own power supply, not just individual plugs.

I have the Eden WTDI and the Glowplug tube warmer (a pretty popular combination around here), and found the perfect power supply is the Palmer PWT-12 mk 2. It offers 8 9v outputs, along with 4 variable between 12-18v, pumping out 500mA each. It's been running great so far.
I wrote a thread on this, see:
Helpful thread: Power Supplies for unusual voltage requirements (15v, specifically)

Peace, SoundSupport
 
Eden takes the line that 15v significantly reduces signal noise.

Which I believe, to be frank: I've run a WTDI since they were introduced, quite often going straight into PA in some pretty electronically noisy rooms, and it's always been totally silent.
It was only when I started putting a proper pedalboard together that I even realised what a problem electronic noise could be - and that was with pedals from Boss and TRex (good brands!).

But I agree that Eden has slightly shot itself in the foot. It wasn't such a problem when Eden only made a single pedal, the WTDI, but now that they offer a whole range, and if they are totally committed to the 15v thing, they should really have thought of offering their own power supply, not just individual plugs.

I have the Eden WTDI and the Glowplug tube warmer (a pretty popular combination around here), and found the perfect power supply is the Palmer PWT-12 mk 2. It offers 8 9v outputs, along with 4 variable between 12-18v, pumping out 500mA each. It's been running great so far.
I wrote a thread on this, see:
Helpful thread: Power Supplies for unusual voltage requirements (15v, specifically)

Peace, SoundSupport
Ya, I never got the "reducing signal noise" thing. Everything you plug into has signal noise if it's turned on. And in the context of a band, it all gets drowned out anyway once you start playing. I've had a few preamp pedals and very low noise can be accomplished very well with 9v.

Good tip abut the Palmer, but I might suggest actually measuring the voltage with a meter just to be on the safe side.
 
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Always has to be one in every effects forum crowd.

Anyway, stuff like your WTDI wanting special power requirements and reversed power plugs in today's world really bugs me. There are a million preamps out there that don't require 400 mA and center positive. What could it possibly do that requires 400 mA, and why, in a world where center neg is the standard, are companies still building pedals like this?
No idea Jimmy why they did center negative. The 400mA might be because of all the stuff on it? It has the 3-stage EQ with a mid-range control that will toggle between 500Hz center and 2Khz center. Also has an enhance (frequency sweep) control, an adjustable compressor, and both a gain and a master control. Again, I don't know the specifics of what they need to run that, but they do provide the power supply with it.

As far as using it, I found that I had to run both the gain and master up pretty high to get the sound out of the little Peavey backline I specifically bought it for. But when I've plugged into the effects-return of other amps, I run the gain between 1 and 2 o'clock for my passive Jazz (same as I run on my Eden amp) and run the master around 10 o'clock most of the time. When I run it into FOH or sound boards and use the same settings, they barely run the slider on that channel up at all. So it meets a wide range of needs.

There was some discussion earlier about DI's with built in preamps and using them into different power amps required vastly different line levels. So perhaps that has something to do with it? In any case, mine works great as I bought it, including the power supply, so I don't worry about it. Just plug it in and go. Of course, I'm not trying to integrate it into a pedal board either, so it's simple for me.
 
Ya, I never got the "reducing signal noise" thing. Everything you plug into has signal noise if it's turned on. And in the context of a band, it all gets drowned out anyway once you start playing. I've had a few preamp pedals and very low noise can be accomplished very well with 9v.

Good tip abut the Palmer, but I might suggest actually measuring the voltage with a meter just to be on the safe side.
Hey Jimmy, you're right about not worrying about noise in the context of a band. And even running a little noise into an FOH probably wouldn't produce much noticeable noise. However, in any recordings, that noise can be a BIG deal and Eden has always been known as having an absolutely silent DI on their amps.

As I mentioned earlier I used my WTDI in a recording session in Seattle recently and it sounded stellar in the initial takes. I totally controlled my sound from the WTDI, running it flat, but adding a little boost in the 500Hz range. At the end of the day the owner/engineer came out to see what I was using because they really did NOT want me to use it at the beginning of the session. They had wanted me to use their DI box.

After the initial recordings were laid down, he said it sounded great and asked what I thought. I said that it sounded like there was a little more bass EQ than I normally use, but that it was absolutely clear and distinct, and not muddy or boomy at all. He smiled at me and said, "we didn't EQ your sound at all. We ran it flat and everything you hear is how it came out of your WTDI. So I gave him the quick tour and told him it cost $150. Then he looked at me and asked me, "doesn't Eden didn't want to sell amps anymore?" I also use it when I record into my computer. Just plug it into my interface; push in the Line-Level button; and away I go.

So maybe having a silent DI connection isn't "necessary" for all the things we do, but for $150 I have one that will work for ALL the things I do. That Eden silent DI design has been around for decades. So, why waste time and money designing something that doesn't work as well?