Crossover Question
Posted: Thu Feb 18, 2021 12:01 am
My First Post!
I built an Omni15 (2 12's, no tweeter) and did my best to follow the instructions to the letter. This is the first speaker cabinet I've attempted, and so far I'm very pleased with the results, but I'm not sure I've got it 100%. I've played bass through it full volume maybe 4-5 practices, and then the first issue showed up. The midrange speaker was buzzing. I figured it was breaking in and cone excursion was increasing, making contact with the baffle, so I installed a spacer ring to give some clearance, and it solved the issue. But I started to feel like the mids and highs were lacking, like it wasn't keeping up with the low end. So I ran a sine wave tone generator through it, sweeping across the frequency spectrum, expecting the mid horn to disappear around 3-500 hz, but I can hear a response all the way down to 50 Hz and lower. I'm pretty sure I wired it up correctly per the directions...omitting
the .45mH coil and 5.6uF cap, making the midrange filter a high pass. Could I have fried the crossover somehow? Maybe that's when the buzzing started, since it started playing the low frequencies? But it seems like blowing a cap would just open the circuit and no sound at all would happen through the mid speaker?
Any help would be greatly appreciated...
I built an Omni15 (2 12's, no tweeter) and did my best to follow the instructions to the letter. This is the first speaker cabinet I've attempted, and so far I'm very pleased with the results, but I'm not sure I've got it 100%. I've played bass through it full volume maybe 4-5 practices, and then the first issue showed up. The midrange speaker was buzzing. I figured it was breaking in and cone excursion was increasing, making contact with the baffle, so I installed a spacer ring to give some clearance, and it solved the issue. But I started to feel like the mids and highs were lacking, like it wasn't keeping up with the low end. So I ran a sine wave tone generator through it, sweeping across the frequency spectrum, expecting the mid horn to disappear around 3-500 hz, but I can hear a response all the way down to 50 Hz and lower. I'm pretty sure I wired it up correctly per the directions...omitting
the .45mH coil and 5.6uF cap, making the midrange filter a high pass. Could I have fried the crossover somehow? Maybe that's when the buzzing started, since it started playing the low frequencies? But it seems like blowing a cap would just open the circuit and no sound at all would happen through the mid speaker?
Any help would be greatly appreciated...