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Re: 2 of my speakers stopped working how can I check them...
Go to sound contol panel by clicking on the speaker icon on task bar, now drag the balance bar left and right for the repective speaker for the testing
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When in doubt about your audio speaker wiring, or if you think that one of your speakers might have stopped working, here is a cheap, accurate way of checking the speaker or the speaker wire. Take a regular 9 volt battery (like those used in smoke alarms) and touch the terminals to both wires of your speakers (disconnect from amp first), if you hear a pop in the speaker, the wires are good, To test individual speakers, touch the battery terminals to the speaker terninals and listen for a pop sound. If you can see the cone of the speaker you can also determine which pole is + and which is - by watching which way the cone moves, If the cone moves out you have the positive + battery terminal on the plus speaker pole. and vice versa. This battery test is safe for you speakers. If you do this kind of audio work, always carry a fresh 9 volt battery in your tool box.
Check the mode your sound card is in. Try to use the setting up utility which will test all speakers individually. Check if the recording is surround & player is in surround mode.
The first step is to eliminate problems with other items of equipment. Speakers rarely both go at the same time, so it is more likely that there is a problem with the amp or output from the mixer. Ideally test with a different amp which is known to work, using a line output device such as a CD/ mp3 player directly into the amp, without a mixer. It is worth checking with alternative cables too - occasionally the wires can get tugged out of the terminations, or even break somewhere on the length of the cable. If all this fails then you'll need to open up the speakers and test the individual drivers with a multimeter to check the coils have not fried!
On a high end sound card there are DEVICE,WINDOW SOUND,CD,WAV and MP3 individual settings.
Right Click on the speaker icon (next to clock) and open mixer to max out individual levels.
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Application like Youtube and Skype has there own settings.
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Did you connect the CD to sound card cable?
Double check to make sure this cable is connected.
More sample pictures link HERE
If your motherboard has built-in sound card then connect the cd to the motherboard CD_IN connector.
A simple test is to connect internal speakers across an AA battery (for about half a second) & listen for a click as battery is connected & another as battery is disconnected.
If this does not happen, check the internal jack plug connection & its connection to the speakers.
If OK, then you can test each speaker individually using the same battery across each in turn.
If this advice is helpful, I would appreciate a rating.
This is a very precise questions as QSC amp are pretty rare and high end electronics equipment. There is no way getting an answer other than getting the amp at a sound shop for repair, wich might go for a visit at QSC anyway. From a sound shop repairman...
could be 2 things....
1) The receiver could be set to feed the right speaker with more volume. Check the volume setting for each individual speaker on the receiver.
2) The cable connecting the left input from your dvd player is not connected properly or is bad. Try swapping the left and right audio input cables to see if this moves the problem to the other side. If it does - get a new cable.
First of, be sure volume is turned all the way down before or as you are powering it it.
Second if that does not work disconnect all speaker, and input/outputs. Power the device on and see if it says overload.
If it does skip the rest of these steps, your capacitors are bad or the power supply is no longer functioning correctly.
If it doesnt, start with testing each speaker at power up. Match the speaker to the output it goes on, power the device see if it says it.
If it does on any speaker test it is a speaker issue or a terminal issue. To test for terminal or speaker issue plug a different/ known to work speaker in that same terminal, if it doesnt say overload it is a speaker issue, if it does say overload it is a terminal issue.
Once you have made sure all speakers and terminals work correctly start plugging input and outputs in and test individually.
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