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I have a set of peavey scorpion sp5xt's one works fine but if i plug into the other one ,in full range, only the horn works,

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Horn and speaker combo cabinets have an electronic component called a "crossover". The horn and speaker both work off different electrical signal frequencies. If you can take off the back, or get inside by pulling the speaker, check for a small circuit board mounted inside the box or on the speaker or horn. Check for a broken wire or loose connection of the crimp connectors.

A common problem with speakers, often the cone, or paper part of the speaker will come un-glued or separated from the magnet "voice coil". This happens when played too loud, when it's commected to the wrong impedance, or if the signal was shorted and "overdriven" (usually sounds like an awful buzz that's really loud).

Always make sure your output impedance matches the impedance of the speaker. Most auto stereos are 4 Ohms. Older home stereos are typically 8 Ohms. Musical PA gear varies between 4, 8, and 16 Ohms. Peavey gear is typicall 4 Ohms, but some older models are different. The Ohm rating is the amount of the resistance in the circuit. If your speaker is 4 Ohms and you plug it into an 8 Ohm circuit, you can destroy the speaker and sometimes the crossover circuit board.

Good Luck.

Phoenix, Az

Posted on Jan 10, 2009


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# 1991 peavey classic chours 2x12 scorpion speakers one speaker makes a buzz noise only on a high e note only sometimes -if i want to replace the speaker do the front grill come off to remove spekaer

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The question is whether or not you get any sound from the horn when in full-range. If so, then either the input jack for the horn is defective, or you are not passing the signal. A quick check would be to send the full-range signal (at low volume) to the high-freq input. You should hear the horn work. If not then the connector is defective on the crossover board.

If you get no sound from the horn in any configuration, then the coil is blown for the horn. This can be replaced. It is usually a 22a or 22ti diaphram

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What are you trying to accomplish exactly?


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