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RE: Grado RA-1 Battery -to- PSU Mod. Issues

Posted by Roastaman (A) on January 11, 2016 at 08:29:58

In Reply to: RE: Grado RA-1 Battery -to- PSU Mod. Issues posted by Caucasian Blackplate on January 10, 2016 at 12:34:43:

I have two 9V DC adapters. They both have two prongs no third gnd. plug.
I did check the polarity of both psu's and both were correct.

I did try using one psu with tandem 9volt connectors to the RA-1, thinking it may work because there is a common ground. I was under the impression that the batteries were in parallel not a series.

If the DC converter's ground isn't tied to the -VE prong where would it be tied to?

It's funny cause Grado themselves rec. a Radio Shack 9 volt DC "battery eliminator" and recently, something similar. They look like nothing more than standard 2-prong 9v. DC adapters. I'm wondering if they have the ground connected differently.

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