Broken logitech Z4 Speaker Cable

The wire inside the speaker cable is broken. You may be able to identify the exact point the wire is broken by bending the wire and unbending the wire. If you can locate the approximate location of the break, you could cut the broken section out then strip the wire, and reconnect. Best to solder if possible. Otherwise, you will probably need to replace the cable or buy a new speaker set.

Most likely this is being caused by the wire inside of the cable that you plug in to you sound card having been broken. If the cable can be replaced, try that; others you will need to repair or have repaired these speakers.

lower the volume and might need higher quality sound card that will not pass through computer parts interference.

The left channel amplifier is defective.

open your subwoofer because main system is inside in your subwoofer than clean it with a air blower ..
this happens when dust is inside the system....

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Try setting the speakers as default on your computer first
Right click on the speaker icon in the system tray and open 'Playback Devices'
If you have 2 sets of speakers I would expect to see them displayed here with one set checked as default
Click on the set of speakers you want to set as default and Click 'Properties'
Click tab 'use this device enable' click 'Apply' and 'OK'
Open the sound tab again right click on the speaker icon and 'test'
All OK ?
Restart your computer and configure to the chat program

If your TV has a headphone socket, then plug the speakers into there, then (you have to do this for some TVs, but not others), go into the set-up menu and turn the headphone volume to 70%. Switch on the Z4 and sound should come out, assuming all connections are correct.

The wires you put on are probably too small.  The gauge number is too high.  If the wires in the plug are okay, just get some light wire (like is on a table lamp) and use that.  It's similar to what they call monster cable but nowhere as expensive.   It's all about signal flow.  

Open
Startmenu->control panel->sound and audio devices
Do you see a window which says "no audio devices installed" ?

• If yes then its a driver problem, you need to install audio driver for your PC.
• if no then, click on "Speaker volume button" below, then click "restore defaults" button.

This should fix the problem.
Otherwise I would suggest some more.

turns out, you can just plug into the headphones plug and just restart the program you want to listen to and the music blasted through the speakers. worked liked a charm.