Help with Active system and suitable crossover

Tinga · #1 (**permalink**) 12th July 2009 , 01:20 AM

Hi guys, I have th following gear.

2 x RCF art325 15" Active Tops
1 x Yorkville A800P 1500W 18" Active Sub
Soundcraft Spirit Folio Mixer.
Various other vocal gear.

I just bought the sub and used to have two active subs that did the crossover work for me, now I have just the one big sub.
What I need to know is what type of crossover I need to send left and right stereo from the mixer to the crossover, stereo highs off to the tops, and a summed mono to the sub. Is there such a device?

Cheers!

Tinga

saxman · #2 (**permalink**) 12th July 2009 , 02:44 AM

I reckon the Behringer SUPER-X PRO CX3400 is one device that will do what you want. Actually your requirement is not too demanding and there should be many crossovers out there that will do this job.
Just remember that the frequency response of your Active Tops is 45-20Khz so you will want to feed both mid-range and high-range frequencies in to the Tops. I do not know the frequency response of your sub but a guess would be that it does something like below around 150Hz.
So you will need to feed something like 150-20Khz to your Tops, not just the "highs".

Tinga · #3 (**permalink**) 12th July 2009 , 07:09 AM

Thanks mate, unbelivably I had one of these and sold it about a year ago as I didn't use it

I will try finding one again.
Thanks for the help.

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#1 (permalink) 12th July 2009 , 01:20 AM
Tinga Junior Member Join Date: Jul 2009 Location: New Zealand Posts: 2	Help with Active system and suitable crossover Hi guys, I have th following gear. 2 x RCF art325 15" Active Tops 1 x Yorkville A800P 1500W 18" Active Sub Soundcraft Spirit Folio Mixer. Various other vocal gear. I just bought the sub and used to have two active subs that did the crossover work for me, now I have just the one big sub. What I need to know is what type of crossover I need to send left and right stereo from the mixer to the crossover, stereo highs off to the tops, and a summed mono to the sub. Is there such a device? Cheers! Tinga
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#2 (permalink) 12th July 2009 , 02:44 AM
saxman Round The Horn Join Date: Jul 2008 Location: Morden, Surrey Posts: 893	I reckon the Behringer SUPER-X PRO CX3400 is one device that will do what you want. Actually your requirement is not too demanding and there should be many crossovers out there that will do this job. Just remember that the frequency response of your Active Tops is 45-20Khz so you will want to feed both mid-range and high-range frequencies in to the Tops. I do not know the frequency response of your sub but a guess would be that it does something like below around 150Hz. So you will need to feed something like 150-20Khz to your Tops, not just the "highs".
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#3 (permalink) 12th July 2009 , 07:09 AM
Tinga Junior Member Join Date: Jul 2009 Location: New Zealand Posts: 2	Thanks mate, unbelivably I had one of these and sold it about a year ago as I didn't use it I will try finding one again. Thanks for the help.
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