multiple crossovers

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=77065
Printed Date: May 19, 2024 at 9:06 PM

Topic: multiple crossovers

Posted By: ty
Subject: multiple crossovers
Date Posted: April 30, 2006 at 4:31 PM

Alright, I am running a kenwood kdc-x889 hu with 4 band crossover, a kicker kx 650.4 amplifier with HPF and LPF ranging from 50-200hz at 12db slope, and finally CDT EF-61cf components (last year model) with 4th order 2 way crossover at 3.7khz I believe, range on midrange is 60-20khz.

So here is my question...will I just turn off all crossovers except the passive crossovers that came with the components? And I know the crossover is at 3.7khz but does that mean that the mids will play from 60-3.7khz and the tweets will play from 3.7khz-20khz? Sorry to ask such newbie questions but I have searched and still am confused. Thanks.

Replies:

Posted By: DYohn
Date Posted: April 30, 2006 at 4:37 PM

ty]And wrote:

I know the crossover is at 3.7khz but does that mean that the mids will play from 60-3.7khz and the tweets will play from 3.7khz-20khz?

Basically yes, that's what it means.

Your speakers say they are rated down to 60Hz, but this does not mean they will stop there OR that they are very efficient there. They will try to play those low frequencies they just will not be able to do very much with them. And if a small speaker is pushed too hard on the low end it can "bottom out" and be damaged or at the very least sound bad. For this reason, I suggest you do this: turn off all crossovers in your head unit. Activate the HPF (high-pass filter) on your amplifier and set it to approximately 60-70Hz. Send this signal to the passive crossovers that control the speakers.

Are you using a subwoofer?

-------------
Support the12volt.com

Posted By: ty
Date Posted: April 30, 2006 at 4:43 PM

cool thanks dyohn, I will be using those tangband 6.5 subs in the rear of my car, I don't really want much bass coming out of the fronts then right?

Posted By: DYohn
Date Posted: April 30, 2006 at 4:49 PM

Ah, are you planning to power them off channels 3-4 of your amp? If so, you'll want to set the front stage like I suggested and also turn on the LPF (low pass filter) on the channels for the TBs, and set it to about 100-120Hz. This is the kind of setup that ended up sounding best in my car (using TBs in the rear doors.)

-------------
Support the12volt.com

Posted By: ty
Date Posted: April 30, 2006 at 4:54 PM

yeah channels 3-4. Cool I will give it a shot, thanks again Dyohn, I always appreciate your help.