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Old 22nd June 2012, 03:56 AM   #1
Einric is offline Einric  United States
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Default Crossover Layout

I am rebuilding some crossovers for a buddy of mine and I am looking for a second opinion on my layout.
Is this interpretation correct?

Thanks
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Old 22nd June 2012, 04:07 AM   #2
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Something is wrong with the tweeter circuit. Assuming the woofer and tweeter circuits are running in parallel, the tweeter circuit is going to short out at low frequencies and fry your amp. You need a series cap before the shunt inductor. Maybe the caps you have after the inductor are before it.
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Old 22nd June 2012, 04:09 AM   #3
Einric is offline Einric  United States
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The block diagram is a hand drawn representation of the factory PCB.
Does that help at all?
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Old 22nd June 2012, 04:14 AM   #4
Einric is offline Einric  United States
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AHHHH I see, How about this?
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Old 22nd June 2012, 10:26 AM   #5
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I think you'll find it's 2R7, then 8F, then the parallel inductor, then the 12F. So your bass is 2nd order and the tweeter 3rd order.
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Old 22nd June 2012, 12:36 PM   #6
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Quote:
Originally Posted by Einric View Post
AHHHH I see, How about this?
That looks reasonable for a 2nd order electrical with a response shaping component pair added.
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Old 22nd June 2012, 12:37 PM   #7
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Originally Posted by Zuhl View Post
I think you'll find it's 2R7, then 8F, then the parallel inductor, then the 12F. So your bass is 2nd order and the tweeter 3rd order.
That could be as well...
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Old 22nd June 2012, 02:36 PM   #8
Einric is offline Einric  United States
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In the diagram with the square blocks the lines represent the poles of the existing crossover components from the factory and the blocks represent the traces on the crossover PCB as it exists now.
TR & TC8 are in parallel to each other then connected in series to the right end of TC12.
At the junction of TC12 to T+ the one end of the parallel TI comes in.
It looked to me that TI has only a junction to the side of TC12 that is connected to T+.
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Old 22nd June 2012, 11:40 PM   #9
AllenB is offline AllenB  Australia
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Your second round looks good.
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Old 23rd June 2012, 01:52 AM   #10
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Fanny, I can't see where the component side of the crossover board is? Or is it me...
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