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Khorn bass horn not functioning. How do I begin diagnostics?

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Dtruck

New Member
I picked up a used set a few months back and everything sounded great. Then, listening to records a few weeks back, I heard the bass on one speaker drop out entirely. I checked the fuse and it was fine. Where do I go next? Any chance its in the crossover? How often do the horns themselves give out? Any advice helps!
 
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Dtruck said:
I picked up a used set a few months back and everything sounded great. Then, listening to records a few weeks back, I heard the bass on one speaker drop out entirely. I checked the fuse and it was fine. Where do I go next? Any chance its in the crossover? How often do the horns themselves give out? Any advice helps!
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Does it have an AK- type crossover?
 
Loosen and tighten all the screws on the crossover. If that doesn't repair it, isolate the wiring for the woofer. Put an Ohm meter on the leads and let us know what it reads.
 
Check the +/- wires that go down to the bass bin, on my pair of AK3 K-horns one of the banana type plugs was messed up and would work its way loose of the connection point when listening to bass heavy music up loud or if you disturbed the wires too much moving the speakers around. I put a piece of electrical tape around it to hold it in.

Otherwise check the connections to the woofer and at the terminal for all wires. If those are good check the woofer ohms to verify its not blown.
 
It has a fuse, so it’s an AK type. Since it’s intermittent, I think Scott has this one figured out.
 
Dtruck said:
Wulp. Seems it was the banana plug. Thought I’d checked it, but I guess not. Thanks for the dummy help!
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Glad you figured it out. I was surprised to see that on my K-horns, at first I thought I blew the tweeters or mids at higher volumes, they would crackle when it came loose but still played, when I saw the plug loose and pushed it back in all was good. You can try to replace the plug or carefully expand it to fit tighter, but the electrical tape worked for mine.

Also these use crappy monster cable wiring that is known to go bad with green corrosion, might consider replacing all the big monster cables if there is any green showing and use new plugs. But be carefull with the soldered connections at the drivers, too much heat there can damage them.
 
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