Replacement Horns sound awful.
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Posted on Aug 16, 2009 08:31 pm
Custom Jimmy
Member Since: Aug 16, 2009
Hi all, first time caller. I recently had the horns in my PA speakers replaced after one blew. The crossover capacitors were also replaced. I picked them up late and didn't have time to test them before a gig. They sounded brain-slicingly tinny and I had to knock all the high frequencies on the EQ close to zero to stop them squealing like a stuck pig, and everything sounded awful all night. The replacements were rated to a higher wattage than the originals. I have very little knowledge on the subject but have years of experience with PAs (i.e. enough to be 100% the speakers are at fault, not me this time.
Any help or suggestions would be appreciated. Plan B is to replace all bits with the same gear as the old. I'm hoping Plan A might be cheaper. Cheers, Jim.
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Aug 16, 2009 08:59 pm Sorry to hear that happened to you.
One thing to remember about replacement diaphragms is that they should match as close as possible to your old ones. It's not a matter of wattage.
You have to consider the the frequency range that they operate in as well. Also the throat of the flare that your putting it on. A smaller throat will increase the amount of SPL that the horn produces.
It sounds as if you have already ran into this situation. So, there is one of three things that you can do.
First, you can replace the diaphragm back to the old ones. (Ones that work anyway)
Second, you could replace the flare to a larger throat. And that will decrease the amount of pressure in the diaphragm.
Third, you could change the crossover point on the crossover network. This will decrease the amount of frequencies that are going to the horn, and will decrease pressure.
Aug 16, 2009 08:59 pm Deleted By Rob Stemple
