Hey dudes,
Now that I've got my beast 15" sub in my system, I'm thinking of changing my 12" sub to be more of a mid-bass. I'm thinking it might be better to have my 12" play 80 - 50hz and then have the 15" do from 50hz on down.
Is there a simple way to make a crossover that would do this? I just need something that I can hook up to my 12" sub that would cross it over. I guess I only need a something that will filter out the frequencies below 50hz since my processor already crosses the subs over at 80hz.
But dammit, now that I think about it, I would need something that would high pass it at 50hz. Now I'm really confused on how to do this.
Anybody have any ideas?
Not easily you would need a an active crossover. Passive crossovers below 350 Hz are bad news.
The next issue is I don't advise the plan. Close spaced crossovers are a bad idea. You get unpredictable band pass gain issues. Ideally crossovers should be spaced 3 octaves or more apart.
A scheme like yours will also introduce unnecessary phase and time issues, all adding up to a lumpy bumpy response.
I see no advantage in these types of schemes, only buying a boat load of problems.
Remember the best crossover is no crossover. I'm strongly in favor of getting the job done with the least number of crossovers and minimizing time and phase aberrations..
To that end in this system on the mains there is only one full electronic crossover. My high pass crossover at 60 Hz is entirely acoustic. There is a fourth order 60 Hz low pass that feeds in the LFE channel, and a first order diffraction compensating high pass crossover that starts first order and transitions to second order, active below 600 Hz. The composite electrical and acoustic slope of this crossover is first order.
The only complete crossover on the mains is at 28 kHz.
The result is a very smooth in room response with no bass dead or loud spots.
So, I would just use one sub, if you want two make them both the same.