Probably not.

What you need to do is follow the manufacturers specs pretty closely if not exactly as far as milliAmps, volts and polarity. As long as you have that matched up you can use the adapter. The last thing you want to do is use an adapter that is not rated properly as you could fry your unit. Now, if you are talking about the 9v cable adapter that comes with something like a 1Spot, then that is totally different (but as noted it looks like your unit is 12v anyway) - edit
Last edited by 311ZOSOVHJH at Dec 17, 2013,
also the adapter has to put out enough current (mA) for it to operate as well as voltage as well as polarity
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