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lotech

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Jan 10, 2002
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how to tell what size power supply an amplified speaker system takes? I have several sets and would like to make use of them if I can figure out whether they take 6,9,12, or 24v transformers.
 
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Aug 19, 2003
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Have you tried looking up the manufacturer's websites for the specs on them? or maybe a few on-line catalogs might have that info,too...
 
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They all have the ratings listed on them. There should be UL stickers on them.
 
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Jul 15, 2003
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my speakers have a little label right next to the power jack, sometimes it's not a label but the label is molded into the plastic so it is harder to see...
 

lotech

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Thanks to all: I did go to the website for juster, but these are probably 2 to 3 yrs old, but never used. Mod. no is DC-691P and I looked for specs around the power jack as funkenbooty suggested but didn't see anything. perhaps someone else has these speakers and can pass this info along.
 

Triple6

Rob
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If their plain old speakers forget about them. The place I work sells small black Labtec Speakers for $8 CAN. There not bad sounding for $8 at all and can also be powered by batteries. The point is if you shop around you can get great deals that may may end up being cheaper then an adaptor (which we sell for $15).
 
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maybe you could take the speakers to RadioShack and they may be able to identify the type you need by looking at them...or not

Juster paired 140W speakers with integrated AC power adapter. Model AC-691N / DC-691P. Beige color, matching most cases and monitors. Retail box.. It says integrated AC power adapter so maybe all you need is a power cord and not the transformer
 
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Feb 26, 2007
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I just got a pair of these speakers working. They take a 6VDC output transformer (patched into the black power line). I had a pair of these speakers without a power supply, but I saw a similar pair of speakers (by another brand name) which took 6 volts DC, so I gave it a try.

The power supply I'm using is 6VDC Output, however, it's 100mA (milli-Amp). I would strongly recommend something stronger than 100mA, but 6VDC IS correct.

Hope this helps,

Jim
 
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Jul 24, 2005
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I also had the same question about the correct voltage for the transformer and I want to say thanks to all those that supplied the answer.
Carl:) :) :)
 
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