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-   -   need help designing a 3-way crossover (http://www.diyaudio.com/forums/multi-way/318810-help-designing-3-crossover.html)

Jarryd 13th February 2018 07:32 PM

need help designing a 3-way crossover
 
2 Attachment(s)
I am seeing large dips and uneven distribution of SPL. im new to this and would like some help in designing this

bwaslo 13th February 2018 07:45 PM

You have C2, L2 and L4 shorted, so there's no crossover at all on S2, S3 and S4!

Jarryd 13th February 2018 08:06 PM

i just checked, there is a separate "short" option available. this isn't shorted from what i checked

Jarryd 13th February 2018 08:07 PM

@bwaslo what do i change?

bwaslo 13th February 2018 09:07 PM

You have a wire drawn through the center of the parts. Move the part aside, delete the wire, put the part back and don't connect one part's end to it's other end!

Jarryd 14th February 2018 06:00 AM

3 Attachment(s)
Thank you bwaslo
i have made the changes, how do i flatten the response and impedance curve further?

AllenB 14th February 2018 08:34 AM

1 Attachment(s)
If you made for example, C2 smaller and/or L5 larger you'd see the mid driver peak near 400Hz reduced. Maybe try making L2 smaller for the mid driver top end. See if you can give them a little more symmetry as this makes it easier. Have a play with it.

Jarryd 24th February 2018 03:55 PM

Crossover Design
 
3 Attachment(s)
Would this be considered an ideal response, i have gone with a 3 way 2nd order crossover. As you can see i have modeled the bandpass with out inverting polarity. I saw a slight peak in impedance at 250hz, can somebody help me remedy this.I am new to this, can you please check the frequency and impedance response and tell me if its proper so i can go ahead with fabrication

The drivers used are as follows,

Tweeter-Dayton Audio PT2C-8 Planar Tweeter

Midrange - Dayton Audio DC50FA-8 Classic Series 2" Dome Midrange

Woofer- Dayton Audio DC300-8 12" Classic Woofer (using 2 woofers in paralle)

Going for a TMWW configuration

Jarryd 24th February 2018 04:19 PM

3 Attachment(s)
i have arrived at this design. but why does the impedance drop to 2 ohms? the woofers which are individual 8 ohms, will be wired in parallel, have i incorporated that into the design?

Lojzek 24th February 2018 04:52 PM

Give me 24h and I'll see what can be done to make the crossover simple and easy on the funds.


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