Please tell me the input voltage and amperage (output voltage and current of adapter)of my speakers, emachine model: SP-30A (US) (I need to buy a new adapter)
AC/DC Adapter
Model MA-9200
Input 120 VAC 60 Hz
Output 9 VAC 200 Ma
Class 2 Transformer
does this mean I need to set my universal power adapter to 9 volts? because my speakers are buzzing even at that setting...Dynex 1200mA AC adapter thanks!
It doesn't make any sense that it's an AC / DC adapter if the input and output are both AC. ( the AC feed is probably what's causing the buzzing) Try a 9 volt tip positive DC adapter.
After doing some more research it may be that the adapter needed is 9 volts ac, but a 1200 milliamp Supply may loaded too lightly to regulate properly at 9 volts by these speakers and that's causing the buzzing.
I thought it required 200mA not 1200mA. With DC it doesn't usually matter if the amperage is higher but I can see how it might with AC especially when you're using five times as much as it needs. I'm looking right now through my many extra adapters to find one to use on the exact same speakers.
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Anybody can help me about what kind power adapter use in e machine speaker SP-30A
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You just need a standard 9v power cord
Brenda, there is no such thing as a "standard" 9v power adapter. You must know if it's alternating current or direct current (output), as well as how many amps it needs to supply. :-)
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