Posted by Chris [ 71.122.32.155 ] on June 12, 2007 at 21:38:28:

In Reply to: Re: My Experience With Line Arrays posted by Chris on June 12, 2007 at 21:16:27:

The spacing in my VMPS RM 40's between the two 10 inch woofers is 54 inches.

According to the wavelength calculator, that is one wavelength at 250 hz.

I read somewhere that speakers need to be crossed over BEFORE they are 1/2 wavelength apart.

That would mean I need to cross at 125 HZ ?

I can do that, but my ribbons will not go down there.

NOW I think I see why VMPS staggers the roll off of their woofers ?

I really did not want to go back to the stagger tuned woofers because I do not like the idea of part of my midrange being reproduced by a 10 inch woofer stuck high in the air.

I am sensitive to Image shifts, and when I have the levels of the main ribbons set low enough to blend with the woofers, I can sometimes here the Image "jump" up to that top woofer.

Dunleavy used widely spaced woofers in the SC 4, anyone know how he got away with it ?

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