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Suggestion for RH DESIGNS ZONEMASTER IIm Power Supply

amellice

Member
Joined
Dec 12, 2012
Messages
431
Location
Snohomish, WA
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Hi, I've RH DESIGNS ZONEMASTER IIm and was looking for a power supply. It says 9V DC at 100mA. I've having hard time finding such power supply. The closest I've come is these power supplies used to power guitar pedals. Would they work or will they fry it?
 

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Key is correct polarity, correct voltage and MIN indicated amperage. So in your case you have one that says 9V / 300mA, that's fine, in fact better than 100mA. I would in fact go even higher like 500mA. But check polarity. It should be shown on Zonemaster at power socket and needs to be same as one you see on PS (center negative on your PS, but maybe the other way around on Zonemaster )
 

So I think from their manual, seems that what I have should work since the center pin is positive

For optimum performance and reliability we suggest you use only a regulated DC power supply capable of supplying 7.5v or 9v at 100mA. If you have a suitable power supply it should be set to 7.5v or 9v DC, centre pin positive, and the connector is a 2.1mm type.​
 
No You have center pin negative.

THIS will work well. It has 1A rating even better. You see a choice of center polarity, make sure you choose center-positive when ordering.
 
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