Experiencing static and crackling - Dell WL6000 Computer Speakers

Using the volume control buttons on the television itself (not the remote) turn the volume all the way down to 0.
Using the volume controls on the Digital box itself.
Turn up the volume until it is at the maximum.
Using the television's volume controls again; raise the volume to a comfortable level.
If you are still experiencing the audio problems on this television, it is possible there is a loose connection on the television.

As Andrew Taylor stated, you could have service problem inside, or outside line trouble, is it worse when raining or wet out and better on warm dry days, sure sign of line problems.
You may also have a faulty phone which will act identical to this, as phones get older and dropped often enough, the circuits start to wear,burn,come loose and cause this static or interference.
Unplug all your phones and try a friends known good phone to see if static goes away, if it does, plug your phones back in one at a time, until you find the bad phone or bad phone jack..
press the helpful button

CenturyLink How to troubleshoot for static or noise on your phone line or...

http://support.sasktel.com/app/answers/detail/a_id/15097/~/static-or-crackling-noise-on-your-phone-line

https://iihelp.iinet.net.au/Troubleshooting_Home_Phone_for_Line_Noise

Try some standards -- unplug EVERYTHING, and use the headphone out jack first. After 2-3 minutes, and it's still crackle or buzz, then it may be something wrong with the internals. Could be simple, but may be more than what the unit's worth to fix. If it DOES NOT crackle/buzz, then you might have a bad connection/cable somewhere. Just plug them all back in, one-at-a-time, and wait in between plugging in. Best of luck!

reduce the volume of the microphone

Any of the transistors in the right channel power amp section circuit will have the fault. Check it. A very skilled work indeed.

Try removing and reinstalling the sound card drivers.
It might also be due to the volume being turned too high.
For external speakers - cheap or damaged cables will cause "static" in the speakers.

This seems like at cables have gone bad or either the connections in the speakers went bad. Its best to replace them unless you know how to disassemble and re-soder the connections.

The noise is in the pre-amp stages of the Denon AVR. It might be caused by bad capacitors.

There is a problem with the reciver my freind. Its only of the driver transistors or IC depending on what componet this amp uses. It can be found by using a heat blower and a can of freeze spry. it most likly will run you 150 or so depending on the exact problem. good Luck