CROSSOVER POINTS

The diameter in the table below is diameter at the surround midpoint, so a 6.5 mid is actually ~5" in the table below. Ideally you stay below the orange column, but it's more a concern of where your tweeter is high passed at. A lot of component kits don't low pass the woofer, they just let it roll off naturally. If your tweeter is high passed lower than the orange column, you're good-to-go...


TLDR: 2500 hz

It really depends on the mids. My Memphis viv mids play very well up to about 4khz but Memphis uses 5khz in the factory crossover box.

I finds cutting them back to 3125hz helps with clarity as well as allowing the tweeter to play down lower brings it more presence.

Currently my mid is crossed 63hz 24db-2500hz 12db and tweeter is 2500hz- ♾️

This draws presence towards the tweeters and allows the mids to play lower without induced intermodulation distortion.

The point of a 3way is to cut back on the frequency range of each driver. This puts each driver playing it's prime range and cuts intermodulation distortion by only playing a narrow range resulting in less possible chance of said distortion.

This is great stuff @Cutaway - Thank you!

Cutaway said:

People have already shared some great information. Here are a few visuals that i stole that helped me get more comfortable with how narrowing or widening the pass band on 6.5's in the doors would have.
View attachment 385310
View attachment 385306 View attachment 385307
View attachment 385308 View attachment 385309

This is the graphic i used to help in figuring out how i wanted to layout my Acoustical Xover Settings in my 3 Way View attachment 385312

Click to expand...

GREAT ANSWER. THANK YOU !!

Cutaway said:

People have already shared some great information. Here are a few visuals that i stole that helped me get more comfortable with how narrowing or widening the pass band on 6.5's in the doors would have.
View attachment 385310
View attachment 385306 View attachment 385307
View attachment 385308 View attachment 385309

This is the graphic i used to help in figuring out how i wanted to layout my Acoustical Xover Settings in my 3 Way View attachment 385312

Click to expand...

Awesome answer, thank you as well

Considering the information given above by Cutaway, I wonder if you can make a BIG difference in your sound experience by adding a couple of 3" midranges to a 2-way speaker system. What do you think ? Currently I'm running this:

subwoofer: 30 - 80Hz
6.5" woofers: 80 - 2000Hz
28mm tweeters: 2000 - 20000Hz

They are all controled by a Helix DSP. So the midranges would be installed on axis, in front of me (like a center channel), and running something like 700 - 6000Hz. What do you think ?

I would run the midrange from 300 to 2k give or take.

nelpastel said:

Considering the information given above by Cutaway, I wonder if you can make a BIG difference in your sound experience by adding a couple of 3" midranges to a 2-way speaker system. What do you think ? Currently I'm running this:

subwoofer: 30 - 80Hz
6.5" woofers: 80 - 2000Hz
28mm tweeters: 2000 - 20000Hz

They are all controled by a Helix DSP. So the midranges would be installed on axis, in front of me (like a center channel), and running something like 700 - 6000Hz. What do you think ?

Click to expand...

Quite literally the point of a 3 way system

nelpastel said:

Considering the information given above by Cutaway, I wonder if you can make a BIG difference in your sound experience by adding a couple of 3" midranges to a 2-way speaker system. What do you think ? Currently I'm running this:

subwoofer: 30 - 80Hz
6.5" woofers: 80 - 2000Hz
28mm tweeters: 2000 - 20000Hz

They are all controled by a Helix DSP. So the midranges would be installed on axis, in front of me (like a center channel), and running something like 700 - 6000Hz. What do you think ?

Click to expand...

When you say "like a centre channel" you don't mean in the centre of the dash, do you?

You could run a centre channel IF your Helix has the proper algorithm and processing for one?

But this seems to be aimed more at getting the system to sound the same from both seats.

Ideally you'd want a tweeter, a mid and a midbass on each side, but if you have a sub you'll need a new dsp with 8 outputs and more amp channels.

...or, you could run your mids and tweets on a passive crossover, if they're very close together

Vx220 said:

You could run a centre channel IF your Helix has the proper algorithm and processing for one?

But this seems to be aimed more at getting the system to sound the same from both seats.

Ideally you'd want a tweeter, a mid and a midbass on each side, but if you have a sub you'll need a new dsp with 8 outputs and more amp channels.

...or, you could run your mids and tweets on a passive crossover, if they're very close together

Click to expand...

"...or, you could run your mids and tweets on a passive crossover, if they're very close together". Very good idea !!! This way I can place tweeters and mids together on the A-pillars, and forget about the center channel. My aim wasn't to get the system to sound the same from both seats. It is just to add a midrange to a 2-way speaker system. Now I have an alternative. Regarding the passive crossover, what is the best manufacturer you know ? Are there passive crossovers up to 6000Hz ?

OzAudioGmc said:

I would run the midrange from 300 to 2k give or take.

Click to expand...

May I know why ? There are midranges that play as high as 6000Hz according to specs

Depending on the location and vehicle that doesn't mean they will be the best solution. I would recommend trying different xover points and trust your ears. Just because a driver has a measurable response that high doesn't mean it will sound better than a tweeter playing those frequencies.
Dispersion will also be narrower using a larger driver at higher frequencies, I prefer to stay clear of beaming if possible.

I already have a Focal passive crossover that I'm not running right now. It is 4ohm, 3khz. Can it make a good crossover between a 8ohms midrange and a 4ohms tweeter ?

I believe you stated you have a dsp? No, I wouldn't use passive xovers, use the dsp. You will benefit greatly by having T/A and separate eq on all of your drivers.
We localize high frequencies by level differences, it is very important to eq the individual speakers to have a matching response.

OzAudioGmc said:

I believe you stated you have a dsp? No, I wouldn't use passive xovers, use the dsp. You will benefit greatly by having T/A and separate eq on all of your drivers.
We localize high frequencies by level differences, it is very important to eq the individual speakers to have a matching response.

Click to expand...

The problem is that my DSP is 6 channels, and I'm already using 5 of them (subwoofer + 2 woofers + 2 tweeters), so there is only 1 channel left. So the only options I can think of are: 1- playing the midranges together (maybe on the dash as a center channel) or 2- playing additional crossovers, be it passive or electronic. Any other idea ?