Time allignment/delay for Horns?

Hi, I understand what the delay is for and there is a good faq page on this site complete with pictures on how to set the delay so the sound from each section (bass/mid etc) arrives at the listener at the same time from a stack.

But as I only have the use of an analogue crossover without such features I have never been able to hear the difference.

I could not find any info, I would like to know exactly what the audible differences are between a stack with time delays set and one with out for horn loaded cabs??

And from that can decide if is worth procuring such a crossover unit with said delay features!

Thanks - Simon.

Cheers, I will borrow a crossover unit with time delay so that I can hear the difference for myself.

google xta dp448

reessi wrote: I see, it has time delays on each output, the behringer ultradrive units also do. This makes sense but I still am curious as to why the above crossover only has it on the low end when not required as far as I can see? Does anyone know? Cheers.

It would only make sense in situations like school auditoriums where column speakers are mounted to the rear walls for speach and subs are added in front of the stage for dances.

But get an LMS like the DCX and get decent delays, different x-over slopes, highpass, etc, etc.

reessi wrote: I see, it has time delays on each output, the behringer ultradrive units also do. This makes sense but I still am curious as to why the above crossover only has it on the low end when not required as far as I can see? Does anyone know? Cheers.

Because you can only run it 2 way stereo or 3 way mono.

So you either need a delay setting on each channel or 2 delay functions over 3 bands.

You delay to your longest horn, so for instance if you have a horn loaded top and reflex bins, you would be time aligning the low end to the top!!

The cross over probably had a bi-amped full range cab in mind where the delay compensates a CD horn and a front loaded driver. There is also probably a phase invert button too so you can push the low end end back and then add appropriate delay to the top.

All in all, you can pick up a dcx for £100 second hand or £170 new... Get rid of the Cx and get yourself an LMS



Edited by Grubbah - 21 December 2014 at 11:30pm

Grubbah wrote: There is also probably a phase invert button too so you can push the low end end back and then add appropriate delay to the top.

There is a phase invert button but it will only let you delay the low end so you do it the other way round.

They call it phase coincidence rather than alignment.