Question about Boston Acoustics BA265 Computer Speakers

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Boston acoustic BA265 Polarity - Or +

I lost ac adapter that came with speakers need to know what the polarity setting should be - or +

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Tip or center hole is +

Posted on May 26, 2008

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I have lost the power supply to my speakers, the only info i have is it's 12v AC/DC I need to know what is the amp and polarity is, to find a replacement.


You need to know what the wattage of the speakers are, polarity is generally standard. There is a small formula too work out what the current rating is. This you can find on the internet. Just search for Voltage , watts to amp converter.
Hope this helps

Mar 27, 2011 | Boston Acoustics BA735 Computer Speakers

1 Answer

I have a boston acoustics speaker ba635 i have lost the power cord how can i get another one


try universal power plug sold at any CVS or Wallgreen start from lowest voltage and go up till it works make sure the plug matches and polarity

Mar 02, 2011 | Boston Acoustics MicroMedia Computer...

1 Answer

Drivers Boston acoustics


Looking up these speakers, it appears that they connect via a 3.5mm headphone jack. This type of interface does not require a hardware driver. Instead you need the driver for your sound card, download the driver from the website hosted by the manufacturer of your computer.
please rate my solution

Jul 21, 2010 | Boston Acoustics BA265 Computer Speakers

2 Answers

I don't have the AC DC 12V in (power cord). What kind is it?


Not only do you need the correct voltage and amperage (MAH) but you need the corectly sized plug to fit the socket AND it has to be in the correct polarity. Usually the polarity is marked by a broken circle with a dot in the middle. Leading to this dot will be an arrow or just a line and at the other end of the line will be either A positive (+) or negative(-) It's important you get this polarity correct when plugging a new power supply in.

Your local electrical store should be able to sell you either a fixed 12volt supply or even a variable supply allowing 3, 6, 9 or 13 volts output. Make sure it has the amperage capacity you need. It won't matter if you need 500Mah and the supply is 750Mah as long as it isn't less than what you need.
The power supply should come with an assortment of plugs which are insrted into the socket on the end of the power supplies lead. Follow the instructions on the packaging and ensure you have the center pin set as either + or -. If you are in doubt. Take your speaker which has the socket fitted and show the salesman. He should be able to pick the correct plug and make sure it's the right way around.

If you plug it in and nothing lights up, quickly remove the plug and turn it 180 degrees in the power lead socket. Obviously it's been put in the wrong way round. If you were quick enough no damage should have occured and away you go.

Just one tip. Wrap a small piece of insulation tape around the plug to stop it from being pulled out of the power lead's socket. They do tend to work loose after a while. Oh and make sure it's switched to 12 volts if you get the variable one.

Apr 25, 2010 | Boston Acoustics BA65 Computer Speakers

1 Answer

Need polarity chart for ac power adapter 12v 2amp


Almost without exception, the polarity of power packs is; the centre is positive (+) outside (-) In very rare cases the opposi=te is the case, but this means the outer contact is able to "short" on any metal it touches.

Mar 17, 2010 | Boston Acoustics BA745 Computer Speakers

1 Answer

I need a 12v adapter where can i get one


Hi there bud, You can go to a Electronic or PC store and ask them for one , they should have one...
Hope you find it
Thanks Happy new Year

Jan 05, 2010 | Boston Acoustics BA265 Computer Speakers

1 Answer

I lost my adaptor for Boston BA 265 Speaker, 12 V in but What amp


Do not worry about the milliamp.
As long as you use an adapter thats the correct voltage (you stated 12 volts), the end connector fits into the speakers and the polarity is the same, then you wont have any trouble.

Jan 11, 2009 | Boston Acoustics BA265 Computer Speakers

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