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Making active speakers with 4 Gallo A'Divas

In the process of researching new speakers for my office I've read about the benefits of active speakers over passive speakers. It came to me that I could use 4 Gallo A'Divas, controlled by an active crossover, and powered by two ROTH MC4s, to create 2-way active speakers.

A'Diva as the mid/bass and A'Diva Ti as the mid/treble. A subwoofer would take everything from 120hz down. My question is...how do I determine the best crossover point? Most speakers seem to cross the mid/treble between 1.7k and 2.2k. With full-range speakers I imagine it could be anywhere. I'm just thinking of how to make them produce the same volume/workload, so they blend well.

Any ideas?
What's a good inexpensive crossover?

Thanks!
Mot
manoterror
manoterror OP
216 posts
 
@Timlub: Technically, I don't need one, as I could run two sets of them full-range, in tandem...which I will try as well. I felt that splitting the signal, and letting them each produce a part of the full signal would be easier on each one, and thus produce fuller sound.

For instance, the Gallo Reference AV uses 4 of these fullrange drivers, with a tweeter, as a single speaker. The outter 2 drivers only handle 100hz down, to free the inner 2 from having to work so hard to produce the full range.
timlub
1,649 posts
 
Hi Manoterror,
It seems that you have answered all of your own questions. I was confused by your question when you asked about using an electronic crossover, but overall Herman is right on.
Your only benefit of the electronic crossover would be to select a good crossover and use one amp on a subwoofer and another on your spheres. Your hipass amp would be cleaner. If you decided to do that, I would recommend lower than 120hz as a crossover point, the Gallo A'Divas are capable of 76 hz. 120 hz in many rooms would be directional, if at all possible go to 100hz. Good Listening , Tim
Good Listening. Tim
manoterror OP
216 posts
 
My main question is still unanswered. I am using a sub for 100hz and below, and still need to figure out how to determine the best crossover point for the two A'Divas. I am not interested in running them full-range...thats the point of my project. To create a 2-way speaker, using an active crossover and 2 full-range single driver speakers on each side.

I need to figure out how to determine the crossover point that will provide a balanced volume from each speaker, along with not cutting into a vocal range, etc. I suppose I will just have to play with it until I figure something out.
timlub
1,649 posts
 
You have no great advantage to use a crossover in this configuration. What ever problems one driver has the other will share, the idea would be that if you had a low region coloration to cross it out to a woofer below or if you had a dip or peak in the upper mids to high end to cross it over to a tweeter, but with two identical drivers, your results will be similar with or without biamping, other than the upper amp should be a little cleaner not playing any bass. Good Listening, Tim
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