Fusion 8 build crossover check!!! - AVS Forum
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Old 08-30-2013, 03:48 AM - Thread Starter
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Hello there,

This is my first attempt at assembling a crossover. I recently finished my Fusion 8 builds and kind of stumbled my way through laying out and soldering all the connections. I had a couple questions pertaining to do's and dont's of crossover layout.

I read to space the inductors out as far as you can and/or orientate them in opposite of each other. I have pretty much been able to verify this and thank god this was how I laid the two inductors on my board.

This may seem like a stupid question but on the underside of the crossover (where all the leads are soldiered, is it a no no to have wires intersecting each other (but definitely not touching).

Here are some pictures of the mess I made. biggrin.gif

I made sure there was insulation at the intersecting points of the wire leads but I failed to do this on the first crossover.



I am just wondering if I need to open my fusion 8s back up and fix any technical deficiencies I may have induced. tongue.gif

Thanks in advance
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Old 08-30-2013, 09:59 AM
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Wires that overlap should have insulation on them even if they are not touching just to be safe. Wrapping some electrical tape around them where they cross would be a good idea.

But something does not look right with your tweeter wiring, why does the + go directly from the input to the + terminal on the tweeter, and there is no direct negative path to it either.

Here is what it should look like:
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Old 08-30-2013, 11:14 AM - Thread Starter
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Quote:
Originally Posted by mtg90 View Post

Wires that overlap should have insulation on them even if they are not touching just to be safe. Wrapping some electrical tape around them where they cross would be a good idea.

But something does not look right with your tweeter wiring, why does the + go directly from the input to the + terminal on the tweeter, and there is no direct negative path to it either.

Here is what it should look like:

Thanks mtg for the clarification. I felt the wiring scheme was a hot mess after I finished it. I will open them back up and fix them.

Wired in their current configuration, what would these sound like. To me the tweeter sounds a little muddy. I am just curious of how accuracte my hearing sense is. biggrin.gif
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Old 08-30-2013, 12:22 PM
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Actually looking at it a little more I noticed that the whole tweeter circuit has the polarity reversed, + input goes to the negative and grounds are on the + side. I am not 100% sure but it may work as designed wired like that.
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Old 08-30-2013, 04:59 PM - Thread Starter
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I see what you are saying. So wouldn't that mean I have to reverse the polarity on the tweeter section at the compression driver? I could be in left field
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Old 08-30-2013, 09:32 PM
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Well wired the way the schematic shows yes the polarity is flipped at the CD terminals. However with your original way of wiring it you reversed the polarity at the beginning of the circuit which should mean you should not need to reverse anywhere else. I am not sure which way you were referring to.
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