No power to the speaker - Energry Speakers Energy Speakers S8.3 Subwoofer

if your talking about a speaker that is powered by a speaker it dont have one but if you talking about a seperate powered speaker it will be located around where the power supply is where you see the power chord going into the speaker inside you should find it around there.Im guessing your speaker isnt powering on am i right if i am you are doing the right step in diagnosing your speaker this is the first thing i'd investigate.

It really depends are what your listening style. If you are looking for load speakers or a lot of clarity, these are not the speakers for you. These sound best at medium volume and music without alot of bass. The size of the speaker cannot reproduce low frequencies very well. Hope this helps.

Are this powered speakers connect to the same mains power socket as the computer.
If not you may be getting an earth loop which causes a humming sound.
Connect these speakers to the same power outlet, if you have not sufficient outlets use a power board.

The way computer speakers are hooked up, is you take your 1/4" main jack from the power speaker, and plug it in to your computer's adio out jack. Then you have to hook up the other speaker's 1/4" plug to a jack in the back of the power speaker (by power speaker, I mean the speaker that has the volume adjustment and on/off switch). Plug the power speaker's power supply in to the wall outlet, turn it on, adj the volume, and you should be in business. If the other speaker isn't working, it might have a pinched speaker wire or another problem may exist, but usually it's either a pinched wire or incorrect hookup.
Oh, one more thing to check, make sure you hook the other speaker to the right jack on the power speaker. There are two jacks on the power speaker, and one is for the left or right speaker only. Good luck, and hope this helps.

Try putting monitor and the speakers on separate power point/wall sockets as your speakers may be powerful ones sucking in all the power from the same socket as the monitor.

You could have an earth loop which causes a hum/buzzing sound.
Is your computer and powered speakers plugged into different mains?
Connecting amplifiers and speakers to different power sockets will create earth loop problems
This can be fixed by using a single power board connected to a single mains power socket, then connecting all the computer components and powered speakers into this one power board.

Generally NO.  Most computer speakers are self powered.  The speaker output from the computer is only enough to power headphones.  However, you can plug that into a stereo and then use the speaker attached to the stereo output.

Disconnect green speaker jack from computer and see if you get a green power light on speakers. If the speakers indicate they have power, your sound card or circuit is shorting out the speakers. If you still have no power to the speakers when disconnected from computer, then no green light means no power to speakers. Either you’re A.C. adaptor is bad or the speakers are shorted out. You have 2 options:
1) Replace A.C. adaptor.
2) Replace speakers.
If you buy new speakers, make sure that they have their own power source (A.C. adaptor).


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Page 17 provides guidance for connecting speakers to an HP A6332.

http://h10032.www1.hp.com/ctg/Manual/c00839729.pdf

This excerpt on page 17 can be clarified by adding "IF," before the sentence.

"NOTE: Speakers may be passive (no power button and no power cord) or active (power
button or power cord). Your computer supports only active (powered) speaker systems; the
speaker system must have its own power cord."

This is an excerpt from page 21

"Speaker types

Speakers may be included with the monitor (select models only) or are sold separately.
Refer to the product documentation for your speakers.
Your computer supports only an active (powered) speaker system. An active speaker
system must have its own power cord. A home audio system does not require active
speakers, because the receiver provides amplification."

Generally speaking, manufacturers offer many types of speakers for use with their computers. If the speakers that originally came with your computer had a extrernal power supply, then it would probably be best to use externally powered speakers.

I have seen many older computers and even some budget computers that use the sound card for amplification. Most modern sound cards are primarilly focused on sound processing, and not necessarilly amplification.

Its impossible to know whether your system requires powered or non-powered speakers because I have no way of knowing your computers specific configuration. However, I think it is safe to say, if you use externally powered speakers in either case, you should be ok.

If you call the manufacturer, or go to its web site, your original computer configuration can normally be provided if you provide its serial number.

Hope this helps - Good Luck!

Found power supply for MLI-691 H speakers
Output is 9vdc, 600 ma. center of plug +.
SUN 9