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Popping sound through sound system speakers

Seems like it is about 60-70% of the time when the keyboard is being played that it pops through the system. our keyboard is a ydp-223. nothing else hooked up to the sound system does this. So I was thinking that maybe there was something to change with the keyboard. It happens most of the time when the pedals are being used, but not everytime. It will pop one measure then it wont till several measures more into the song. Then there are sometimes it does not do it through the whole song. Would like some suggestions if you know. This is used in church services every week.

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Make sure that the trim (gain) isnt set too high on your keyboard's PA channel. it might just be clipping due to input levels that are too hot.

Posted on Nov 26, 2008


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You are likely driving the unit too hard.

When you drive a speaker too hard the voice coil is driven beyond the linear range of movement and the speaker will "pop" as it hit the end range.

Compare to an identical unit. This problem is common when one gets too small a unit and tries to get too much out of it.

The dirty setting of the amp flatops the signal and drastically worsens the problem.

People buy a 15 watt amp and expect it to sound like a 200 watt and it just doesn't happen. You have not given us the model number so this is my best guess.

If your unit has a 12 or 15 inch speaker, it should NOT pop unless you really overdrive it. It is very hard on both the amp and the speaker to have the popping condition. I won't get into the technical reasons at this time.

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There are certain small amps that have a possibilty of popping the power amp due to a feedback arrangement. Likewise, never use the headphone jack for ANYTHING other than headphones.

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Verify that your power cord is in tight and try another cord to verify it is OK.

Beyond this, service is probably required. If unit is out of warranty, you could have a person open it up to see if anything is obvious.

A possible proble is bad connectors or worse, a cracked circuit board.

Analyzing if noise is from both the woofer and high range speaker is a first step.

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