Question about Crown XTi 2000 2-Channel Amplifier

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Keep blowing speakers

We have a crown xti 2000 amp (1000x / side) and had two behringer E1520 400w speakers in a school auditorium setting. We have gone through 3 speakers now ... we are assuming it is from clipping. What hardware type of solutions will reduce the risk of blowing more speakers. The general users of this equipment are teenagers, so expecting responsible levels of sound are not likely. Any suggestions ... new amp?, more powerful speakers?

Signed ... I have no idea what I'm doing..

bm

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It sounds more like you are overdriving the speakers not clipping the amp. If the output rating for the amp is 1000W into 4 ohms, this is approximately 500W into an 8 ohm load. Your speakers are rated for 400W. If you are running the amp at full output, that is too much power for the speakers and either the speakers are warming up too much and failing or are being extruded too far and failing. Your best bet is to better match the amp/speaker setup. Crown amps have built in clipping indicators and I believe that the xti series also has a compression circuit that would prevent distortion on the output side.

To confirm my suspicions, in what manner are the speakers failing? Are they completely open or do they sound distorted?

Thanks,
Dan

Posted on Apr 23, 2009

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