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Looper's Delight
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> My understanding is that you have to match the miliamps as well as >the voltage. some devices can handle deviations better than others >but large variations are to be avoided. Often if one tests actual >output with a meter,it's not precisely as marked. Also the polarity >of the connector has to match,some have the outer ring positve ,some >negative,this is usually marked. I discovered this when I had one >that fit the specs but didn't work ,when I noticeds the reversed >polarity I cut off the connector, switched it around,and >reconnected-worked fine. >It's easy to find lots of wallwarts at thrift stores for cheap,you >can take the device with you to test if they work. Current (measured in milliamps) doesn't have to match. You want to make sure that the adapter supplies more current than the unit needs. 99% of the time, effects don't draw anywhere near the capability of the adapter. My Lexicon LXP 5 is one that needs a full 1500 ma AC. Most stomp boxes are in the 50 ma range. When testing the output of an adapter, often you will find the output to be overrated considerably. This means that the output is not regulated. While in some cases it may not matter, you really want a regulated supply. It will mean that your effects will run a lot quieter and more reliably. Some effects will really have a problem with an unregulated supply and hum a lot and act weird. My MXR Micro flanger is one of those. Unfortunately it fried after getting hooked up accidentally to a reverse polarity adapter. It's unfixable. Good news is that the Lexicon G2 has a dead on copy of it. Anyway, hth. Edwin -- Edwin Hurwitz Boulder CO http://www.indra.com/~edwin http://www.cafemontalban.com Location Recording Services