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Advice needed for signal seperation

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=47136
Printed Date: July 18, 2025 at 9:00 AM


Topic: Advice needed for signal seperation

Posted By: deocder
Subject: Advice needed for signal seperation
Date Posted: January 07, 2005 at 12:22 PM

I was looking at a suggested division of frequencies for my speakers...

As suggested:
A/D/S tweeter/woofer components 350hz+
MB Quart midbass 70-350hz.
Sub to 70hz

If I am using my Alpine head unit 3-way setup, the control I have for setting crossover points are as follows:

Low: 20 Hz - 200 Hz
Mid High pass: 20 Hz - 200 Hz
Mid Low pass: 20 Hz - 20 kHz
High: 1 kHz - 20 kHz

So I can set low to 70 Hz and bypass the crossover on the amp for the sub, no problem.

I am not sure how I would run the other channels. I can set the mid from 70-350 Hz to supply the Quart's. But then I will have a gap between 350 and 1K. And If I am going to power the a/d/s using the xo, I'm not sure how to get this to work. If I let the a/d/s's xo determine the crossover points....I'd still need to feed it 350 and up. I want to biamp the a/d/s/ also......hmmm...

Perhaps I can use the crossovers built into my Orion 500.4 amp. They allow 45 - 5k high or low pass. I could use the orion for the midrange.

Use one side to run the Quart's using the Alpine's mid crossover set from 70 Hz to wherever the a/d/s passive xo sets its cross. On that side I will then use the Orion xo set for low pass at 350.

Then on the other side for the a/d/s in the kick, I could set the Orion xo for high pass at 350. It would not matter where I set the Alpine xo at this point because the a/d/s will cut it off where it needs to.

Then I could run the high side of the Alpine to two channels of the Eclipse amp for the tweets. Then I can bridge the other channels of the eclipse to power the sub if it lets me bridge it like that. I'll have to check.

But I have also read that the Eclipse amp is best suited for midrange and up. 

Any suggestions out there?




Replies:

Posted By: Francious70
Date Posted: January 07, 2005 at 2:34 PM
Everything looks good, run the high pass at 350Hz and let the passive crossover that came with the comps seperate the Mid and tweeter.

Paul





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