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Old 31st August 2009, 09:50 PM   #1
room237 is offline room237  United Kingdom
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Default Yamaha EMX88s problems help!

Is there anybody who is familiar with the Yamaha EMX88s amp as i have a massive issue with this PA which has caused me nothing but grief due to partial clipping which lowers the sound for less than seconds.
I have tried a number of ways to get rid of this problem but it is still there. Even adjusting the EQ makes no difference to the clipping.
I di think that that the speakers i was using at one time were too powerful for the amp. I purchased a set of Berhringer B215 600watt 2 way speakers and today they both went down? I find it strange to find two speakers going down unless the amp is over powering them? The amp is 800watts but only when four speakers are connected to it. at the current time i am using two speaker cabs.

I am a solo performer and use professional backings together with guitar. The backings are put through the EMX as well as the vocals and at times my guitar which is ran into the amp via my POD 2.0.
The tracks will cause the clipping as well as at times the vocals. Today was the worst i had ever seen it. There was a problem with the right speaker like fluttering and then went off came back on then the sound went only leaving sound coming from the top of the cab but nothing from the speaker. I thought the amp was damaged. However on hooking up to another set of speakers there the amp was working fine and the speakers were found to be dead.
Any help please!!
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Old 1st September 2009, 12:47 AM   #2
BudP is offline BudP  United States
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Sounds like you are over driving the speakers. Speakers have a heat related clipping that sounds horrible and eventually the voice coil gets so hot that the coil wires are loosened, It sounds really bad and then quits completely. If you are using your guitar as one of the sources, you will be dumping the amps peak power into whatever cabs you have and if you are a metal head this situation could be continuous, rather than the occaisional peak the equipment is rated for.

You really need to get a local sound tech to help you out with drive levels and power levels.

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