Polarity of the EH Holy Grail Nano?

BloodRose

Professional Scapegoat
most of my pedals have a logo thats laid out like the examples on my power supply. Like + o -. (fill in the O) The way its written on the Nano is: 9v - (in the circle) + . Am I reading right that that one is going to be opposite of the + o - ? Just throwing me off that there isnt the full 3 characters.. I guess Im lucky I havent fried that one cuz I been using a regular adapter on it. Figures there would be an oddball. All my other pedals are +o-. My MXR EQ is the same, but it's 18v tho. Thankfully, my power supply has an 18volt port..

Thanks!
 
Re: Polarity of the EH Holy Grail Nano?

Standard center negative.

holy-grail.png
 
Re: Polarity of the EH Holy Grail Nano?

hmm.. not sure how to convert this one.. Im not swift with this stuff. as I said, most of them are +o-. there is a converter with the thing to flip it the other way. Guess Ill have to keep this one battery powered. thanks for clarifying
 
Re: Polarity of the EH Holy Grail Nano?

You could get or make a dc jack to battery clip type cable, only thing to be sure of is to match the battery clip side terminals of the cable with that of a normal 9v cell or rewire the polarity of the cable so that the battery clip side polarity is matching that of a standard 9v cell. That way you can plug it into the battery connector of the pedal as a regular battery, although the power supply better be a reliable one since there usually isn't much or any protection in most battery inlets of pedals. I think such cables are included with a 1spot pack or available separately maybe from them.
 
Re: Polarity of the EH Holy Grail Nano?

You can get a polarity reversal cable for about 4 bucks on Amazon
 
Re: Polarity of the EH Holy Grail Nano?

Guys, it's standard 9V DC center negative. No need for special adapters, polarity reversals or anything. :)

Is this the symbol you are used to seeing? It's the same polarity. :)

mGdiCLCn3ddcroIlR7k4dSg.jpg
 
Re: Polarity of the EH Holy Grail Nano?

So, its just a wacky way to write the same thing? I didnt get that clearly from your first post/response. That would be the cats meow if it is.
I will say that I had been using a regular adapter with the pedal and handnt had any problems.. So I kinda wondered, but I havent used it much for fear of frying it.
I got everything rewired (except this pedal and have dropped about 10lbs of wiring/adapters and strips.) My orig board was even more outrageous.
 
Re: Polarity of the EH Holy Grail Nano?

This some of the wiring I pulled out.. There is still a power strip left that I have to pull out now that I know I can hook up that pedal..



yeah, ghetto rig.. I know.. Gonna be a great change.
 
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