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August West
Bronze Member
USA
137 Posts |
 Posted - 07/18/2009 : 05:04:10
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On another forum I'm on someone has a Visual Sound 1 spot 1700 mA daisy chain power supply. It says it can power Boss, Line 6, etc. etc. pedals but does not mention Electroharmonix. This guy has the following pedals and wants to know if the 1 Spot will work on these:
ElectroHarmonix Reverb Pedal
ElectroHarmonix POG.
The EH literature apparently says that only EH PSs can be used. I assumed that was marketing BS as they want to sell PSs but is there something about the EH pedals that would cause a problem? |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 07/18/2009 : 06:34:41
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| It won't power the POG (different voltage) but it might power the reverb, depending on which one it is? |
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August West
Bronze Member
USA
137 Posts |
Posted - 07/18/2009 : 15:23:12
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| Someone else noticed this on the other forum as well - turns out its a POG2 which is 9V and appears that the 1 Spot will be OK. I'm not sure which reverb it is and have asked but one poster has said that for at least some EH reverbs they cannot accept daisy chained PSs with a common ground as this will cause noise. |
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August West
Bronze Member
USA
137 Posts |
Posted - 07/18/2009 : 17:25:10
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| It is a Holy Grail |
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August West
Bronze Member
USA
137 Posts |
Posted - 07/21/2009 : 23:09:24
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Answering my own question - this is from the EH forum and it appears that some EH pedals require dedicated PSs or else they will have ground loop problems that will cause noise at a minimum and have the potential to damage the equipment. From a thread on the EH forum to some else's similar question:
"There is no proprietary thing going on. If you provide the correct voltage with the correct polarity and enough amperage, your pedal will work. Also, you need to pay attention to the grounding of the pedal- some are positive ground, some are negative ground (this is different from polarity) and those pedals must have isolated power supplies (they can�t share!)
If you don�t follow those rules, your pedal may not work properly, may be noisy, or components may become damaged. If you know what you�re doing, giving it the �wrong� voltage values may give you a more desired result.
Generally:
too little voltage: not work properly or become noisy, can give interesting effects
too much voltage: can cause damage, can increase headroom
too little amperage: noisy, may not work properly
too much amperage: I don�t think you can have too much amperage
wrong polarity: definite damage will occur
negative ground + positive ground sharing power: a ground loop causing noise, damage to components, or shut off of the power supply (if it has that safety feature)
digital and analog pedals sharing power: noisy
The HOG is 9V center positive polarity, the SMMH is 9V and center negative polarity. If I were you, I�d use the power supplies that came with them.
1spot puts out center negative power, so I never tried it with the HOG. With the SMMH it was noisy. It puts out enough amperage, but I had it daisy chained so the SMMH wasn�t getting enough I guess. Digital pedals generally don�t like to share. Technically with the HOG you could power it with the 1spot if you have a reverse polarity adapter, but I would guess that it would be noisy.
Until you get a better powering solution, I�d suggest you just use their individual power supplies.
This is why a lot of us get stuff like the Voodoo Labs Pedal Power 2+. That�s what I use." |
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Powering Electroharmonix pedals with a VS 1 Spot
