Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

need help designing a 3-way crossover
need help designing a 3-way crossover
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 13th February 2018, 07:32 PM   #1
Jarryd is offline Jarryd
diyAudio Member
 
Join Date: Feb 2018
Default need help designing a 3-way crossover

I am seeing large dips and uneven distribution of SPL. im new to this and would like some help in designing this
Attached Images
File Type: jpg existing fr.jpg (143.1 KB, 183 views)
File Type: jpg crossover.jpg (419.3 KB, 185 views)
  Reply With Quote
Old 13th February 2018, 07:45 PM   #2
bwaslo is offline bwaslo  United States
Old guy with soldering iron
diyAudio Member
 
bwaslo's Avatar
 
Join Date: May 2006
Location: Portland, Oregon!
need help designing a 3-way crossover
You have C2, L2 and L4 shorted, so there's no crossover at all on S2, S3 and S4!
__________________
[W9MJE] Horn spreadsheet SynergyCalc/; SmallSyns SmallSyns;
Crossover design Xsim; Depot diffusor super-easy diffusors
  Reply With Quote
Old 13th February 2018, 08:06 PM   #3
Jarryd is offline Jarryd
diyAudio Member
 
Join Date: Feb 2018
i just checked, there is a separate "short" option available. this isn't shorted from what i checked
  Reply With Quote
Old 13th February 2018, 08:07 PM   #4
Jarryd is offline Jarryd
diyAudio Member
 
Join Date: Feb 2018
@bwaslo what do i change?
  Reply With Quote
Old 13th February 2018, 09:07 PM   #5
bwaslo is offline bwaslo  United States
Old guy with soldering iron
diyAudio Member
 
bwaslo's Avatar
 
Join Date: May 2006
Location: Portland, Oregon!
need help designing a 3-way crossover
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!
__________________
[W9MJE] Horn spreadsheet SynergyCalc/; SmallSyns SmallSyns;
Crossover design Xsim; Depot diffusor super-easy diffusors
  Reply With Quote
Old 14th February 2018, 06:00 AM   #6
Jarryd is offline Jarryd
diyAudio Member
 
Join Date: Feb 2018
Thank you bwaslo
i have made the changes, how do i flatten the response and impedance curve further?
Attached Images
File Type: jpg existing fr.jpg (161.0 KB, 152 views)
File Type: jpg existing imp curve.jpg (148.9 KB, 141 views)
File Type: jpg crossover.jpg (530.9 KB, 141 views)
  Reply With Quote
Old 14th February 2018, 08:34 AM   #7
AllenB is offline AllenB  Australia
diyAudio Member
 
Join Date: Oct 2008
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.
Attached Images
File Type: png 600px-Linkwitz_vs_Butterworth.png (30.8 KB, 40 views)
  Reply With Quote
Old 24th February 2018, 03:55 PM   #8
Jarryd is offline Jarryd
diyAudio Member
 
Join Date: Feb 2018
Default Crossover Design

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
Attached Images
File Type: jpg X-over.jpg (26.6 KB, 53 views)
File Type: jpg Impedance response.jpg (145.7 KB, 52 views)
File Type: jpg frequency response.jpg (142.1 KB, 55 views)
  Reply With Quote
Old 24th February 2018, 04:19 PM   #9
Jarryd is offline Jarryd
diyAudio Member
 
Join Date: Feb 2018
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?
Attached Images
File Type: jpg X-over.jpg (26.6 KB, 43 views)
File Type: jpg Impedance response.jpg (145.7 KB, 33 views)
File Type: jpg frequency response.jpg (142.1 KB, 29 views)
  Reply With Quote
Old 24th February 2018, 04:52 PM   #10
Lojzek is offline Lojzek  Croatia
diyAudio Member
 
Lojzek's Avatar
 
Join Date: Feb 2012
Location: Croatia
Give me 24h and I'll see what can be done to make the crossover simple and easy on the funds.
__________________
A good dialogue makes you feel like a changed person, not like you have won or lost the competition.
  Reply With Quote

Reply


need help designing a 3-way crossoverHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Replacing / building a 3 ways crossover - need help Herbert1112 Multi-Way 1 26th May 2014 07:38 PM
3 ways active crossover bizicafe Tubes / Valves 15 24th February 2012 03:08 PM
Building 2 ways Ellam-XT Crossover sleep888 Multi-Way 2 22nd April 2009 01:32 AM
for sale four ways active crossover patriz Swap Meet 1 6th May 2008 12:42 PM
Ways to Prototype a Crossover? (newbie question) diesel_88 Multi-Way 12 27th October 2007 07:22 PM


New To Site? Need Help?

All times are GMT. The time now is 05:58 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki