Hi there just bought some wharfdale monitor speakers yesterday they seemed to go good and today they are creating wierd high pitched crackly sounds without even playing anything.. can you please help?

May be a couple of things; The first is a resonance in the cabinet, which may not be noticeable at high volumes. If the speaker cabinet was ever dropped,or got cracked from dropping , dry weather,or whatever, there may be certain frequencies that make the cabinet rattle. Try holding the cabinet when it rattles and look for anything loose,from a side wall to a loose foot, or the speaker itself. Tighten up loose items and seal any gaps or cracks On the cabinet.
The other problem could be a partially blown speaker. Test by lightly pushing in on the outsides of the speaker to see if it moves in and out freely. If there is a scratching sound, or it drags slightly , it might be blown. Also,the dust cap or another part of the speaker may be loose. Check that, and reseal if loose. Replace or have reconed if blown.

If you are experiencing a mid-range humming from your monitors when using your Allen & Heath PA12-CP mixer, there may be a problem with the signal level or the cables.
Here are a few steps you can try to troubleshoot and resolve this issue:

1. Check the signal level of the sources that are being sent to the monitors (e.g. kick drum, snare, etc.). Make sure they are not too loud or too quiet, as this can cause the limiter to engage and create a humming sound.
2. Check the cables that are connected to the monitors. Make sure they are not damaged or loose, and that they are properly connected to the mixer and the monitors.
3. Try using a different set of monitors to see if the problem persists. If the humming is still present, the problem may be with the mixer itself.
4. If you are still experiencing a humming sound, you may need to contact Allen & Heath customer support for assistance. They will be able to provide you with more detailed troubleshooting steps and help you resolve the issue.

Overall, if you are experiencing a humming sound from your monitors when using your Allen & Heath PA12-CP mixer, the problem may be with the signal level, the cables, or the mixer itself. Follow the steps above to troubleshoot and resolve the issue.

I think that rather than the mixer, that your front speakers may have a limiter built into the high frequncey amp. You may be asking them to do more that they are capable of.

i'm having the same problem ... :/ anyone please! heelp!

If you don't know how to connect this... well we don't either because you did not tell us what your sound system is. The larger plug is what is known as a "Speakon" connector and is a fairly reliable speaker connection that is used now. For your use you will PROBABLY use either of the 1/4 inch jacks with a cable from the amp that will drive the monitor(s). If you have multiple monitors you will daisy chain them using the 1/4 inch jacks and SPEAKER rated cables creating a string of speakers with input going into one and an output from the same one to the next speaker and so on...USUALLY you will be limited to two speakers per amp output...

By ading in the harmony signals you are combining 3 signals so gain is probably going to be high you will have to reduce it before it goes to the amp or turn down the input gain of the amp.

NEVER use a pedal in the external effects loop of an amp as the levels are wrong.

These are a nice unit... just bought three of them that were dead... I have repaired one so far. I assume you mean the blue LED is on indicating power is on. What I want you to test is if injecting signal on the BACK of the unit jack (power amp in) will create sound. If it won't then better exercise your warranty. The one unit I have completed repair had a bad 15 volt regulator in it... the second that is almost fixed somebody had blasted the input circuits... probably connected to a speaker output... don't do it... these are LINE and MIC level units. If you need to tap off a speaker output, use a DI box with the unit. The third unit I have not received yet. Drummer used the repaired one as monitor last night and was impressed with the power this unit has.

Plug in one a at time using the same input. Take the left speaker and the left input wire. Plug the wire from the mixer into the one speaker if it sounds ok then unplug the speaker and replace it with the right speaker. If it sounds ok replace the wire with the right wire. This will tell you that each speaker is working and each cable is working. If you switch speakers and they sound different then the possibility of a blown high end driver in one. If they sound ok each by it self but the high end suffers when they are both hooked up then the possibility of the speakers might be. Not sure what the sub has to do with the whold setup. Any further questions call me at the store.

Vito Vacirca Jr.

Pro Line Music

490 Lincoln Highway

Fairless Hills Pa. 19030

215-736-8055

[email protected]

[email protected]

www.prolinemusic.com

Check your power supply to the unit. Low voltage COULD cause this.

Also make sure a setting is not "looping" the audio back into itself.

If you use analog outputs and inputs try to clear of it really is your mixer and not one of the inputs. If the inputs are good your mainboard could be a bit dusty or you have a loose contact. If you have a mixer with internal interface your audio stream from your computer might be the problem.