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spicer 15th January 2013 11:37 PM

Line_array xover
My next project is to build line array with these parts.

There would be 9 mid-bass and 9 tweeters in each line array. Line arrays will be concave on front (

What would be your suggestions to build the Xover


tnptruck 16th January 2013 03:50 AM

how i'd do it..
I would cross the tweeters around 3000hz. Use a 6.8 uf capacitor on each tweeter.

It might be a little tricky wiring nine speakers into a usable ohms. It would be easier to figure out if you use 8 woofers..

Hope this helps...

geraldfryjr 16th January 2013 04:56 AM

You can wire 9 drivers in a 3 X 3 series/parallel configuration and still get 8 ohms and still use one 6.8uf capacitor for the crossover.


jer :)

spicer 17th January 2013 01:32 AM


May be some Inductors ??

or the mid bass is full range ??

geraldfryjr 17th January 2013 02:32 AM

It is hard to say what would work best until you get it assembled and do some frequency response and impedance tests on the system as a whole.

Have you considered an active crossover for it?

This would allow you to experiment very easily and then once you find the parameters that work best for you then you could design a passive crossover for the system if you wish to do so.

With that many drivers you should be able to drive it with two decent sized power amps.
DIY amps maybe?


jer :)

spicer 22nd January 2013 09:49 PM

Sorry for the delay

For my x-over i have this model for start...

what do you think ?

geraldfryjr 22nd January 2013 10:59 PM

The link doesn't work. :(

jer :)

spicer 22nd January 2013 11:33 PM


Originally Posted by geraldfryjr (
The link doesn't work. :(

jer :)

?????? i check ....

He work fine here ?????

spicer 23rd January 2013 12:00 AM

1 Attachment(s)

geraldfryjr 23rd January 2013 02:47 AM

Thanks !

That looks like a standard crossover design.

They used the 12db Linkwitz-Riley cuve.

here are a couple of calculators that may help you.
I plugged in the value's and they came up with very similar results,

2-Way Crossover Designer / Calculator

Crossover Design Calculators

jer :)

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