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Audio Problems.

1442 Views 17 Replies 7 Participants Last post by  digital desire
Here are my first graphs.
Are these any worse, or much worse from the average bears?
One is just the sub, and the other is sub + mains.
The sub is about to get a couple passive's screwed onto it's sides, in short order.
I just wanted a before and after plot to start!
But, I can't help but feel those large divits are from the room, where there is very little I can change. (according to the boss)
My one question right now is, will the passives on either side of the sub cabinet change the ROOM response much? Maybe since they are propagating 90* to the left and and right of the driver? I realize the passives do not do much above 50hz anyway...


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When dialing in a crossover....

First measure the response of the sub. Then measure the response of the main speaker. Repeat until the volume of the sub matches the volume of the mains.

Go to the all measured tab and note where the sub and main responses overlap - this is the acoustical crossover frequency (which might be different from what the electronics are doing). Note the frequency and the magnitude.

Now measure the system with both the sub and main at the same time. If you have proper phase/polarity, then you will see +6dB at the acoustical crossover frequency.

Make sure you're not using any smoothing when going through the exercise...also make sure you don't have any one driver significantly louder than the other.
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