Help w/crossover wiring - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 11th December 2008, 02:47 PM   #1
babgrip is offline babgrip  United States
diyAudio Member
 
babgrip's Avatar
 
Join Date: Sep 2007
Location: Jax FL
Default Help w/crossover wiring

I need your help figuring out how to corectly wire the crossover that came with these speakers, I hope the attached drawing has enough information. I would also like some cabinet suggestions ,my guess is that they came from a PA system. I have built the Bushhorn MK II, Spawn Harveys and a decware Wicked One. But this is my first experiance with crossovers.
Thanks, Ben.
Attached Images
File Type: jpg fostex2.jpg (29.0 KB, 124 views)
  Reply With Quote
Old 11th December 2008, 07:27 PM   #2
diyAudio Member
 
Join Date: Feb 2002
Location: Western Sydney
Re'I hope the attached drawing has enough information' - no it doesn't but my guess is in the attached pic (tweeter wired reverse polarity);
for cabinet suggestions we need to know the T/S parameters of the drivers.
Attached Images
File Type: jpg xo.jpg (7.7 KB, 109 views)
__________________
Impedance varies with frequency, use impedance plots of your drivers and make crossover calculations using the actual impedance of the driver at the crossover frequency
  Reply With Quote
Old 12th December 2008, 07:19 AM   #3
babgrip is offline babgrip  United States
diyAudio Member
 
babgrip's Avatar
 
Join Date: Sep 2007
Location: Jax FL
Default crosover

Thanks for your reply .now if i can figure your drawing out ,unfortunatly i can not read a schematic well enough to determine which leads are positive and which are negative, or what is in and out on the coils. I may need to go to a community college and take a course in electronics.i have attached a pdf of the PS-300 driver i have not been able to find anything on the tweeters.
Attached Files
File Type: pdf ps300.pdf (89.3 KB, 12 views)
  Reply With Quote
Old 12th December 2008, 07:19 AM   #4
babgrip is offline babgrip  United States
diyAudio Member
 
babgrip's Avatar
 
Join Date: Sep 2007
Location: Jax FL
Default fostex crossover

Allright i have spread out the crossover parts on my work bench the tweeters are still connected to crossover i have attached a drawing of both crossovers as they are wired differently. The one on the bottom of the page seems to make sense. it would appear to me that i should wire the lower 12" driver to the the bare ends and the upper driver to the solder joints goining into the coils does this sound right ?? still need cabinit ideas
Attached Images
File Type: jpg crossover.jpg (40.9 KB, 89 views)
  Reply With Quote
Old 12th December 2008, 09:26 PM   #5
diyAudio Member
 
Join Date: Feb 2002
Location: Western Sydney
Ignore my diagram above, it was only a guess;
If the 1.8mH coil is across the tweeter, your crossover may be a series xover. Looking at the freq response of the PS300, there may be a filter to tame the HF response, with the tweeter filling in the very top of the treble range.

In your pic, you don't show where the caps are connected to on the right hand side of the strip, that would help.

Reading these diagrams is quite simple, you just need to learn what the symbols stand for, look here:http://sound.westhost.com/beginners.htm

Perhaps you're best to start from scratch with an xover anyway,
ask on the fullrange threads whether anyone has used this driver

A quick sim in WINISD shows these drivers are probably best for Open baffle
__________________
Impedance varies with frequency, use impedance plots of your drivers and make crossover calculations using the actual impedance of the driver at the crossover frequency
  Reply With Quote
Old 13th December 2008, 04:08 AM   #6
babgrip is offline babgrip  United States
diyAudio Member
 
babgrip's Avatar
 
Join Date: Sep 2007
Location: Jax FL
Default crossover

OPEN BAFFLE Music to my ears before i bought these speakers i posted a question on the fullrange forum as the suitability of them for an Open Baffel speaker .I recived no respose. your thoughts
1- single 12" OB no crossover
2- 2-12" out of phase OB no crossover
3- 2-12" + tweeter OB L-pad for tweeter
Baffle size ??


As far as last diagram i posted the barrer strip with the caps shows no sign of any previous connections other than the one shown. the center lug has a screw lug ,i wonder if this was a mounting point that also went to ground .

Thanks again for your thoughts it is really amazing that we are on opposite sides of the globe and are able to share a common interest.
I have attached photo of latest diy speakers
Attached Images
File Type: jpg img_0372.jpg (53.5 KB, 59 views)
  Reply With Quote
Old 13th December 2008, 04:09 AM   #7
babgrip is offline babgrip  United States
diyAudio Member
 
babgrip's Avatar
 
Join Date: Sep 2007
Location: Jax FL
Default crossover

here is photo caps
Attached Images
File Type: jpg img_0373.jpg (50.6 KB, 56 views)
  Reply With Quote
Old 13th December 2008, 08:00 AM   #8
babgrip is offline babgrip  United States
diyAudio Member
 
babgrip's Avatar
 
Join Date: Sep 2007
Location: Jax FL
Default crossover

after a long nigght of experimenting i think that i am done .Thought that i had figured out crossover WRONG .Managed to burn out to of thePS300.So i built asimple 2 way OB 36'TX24' w.1- ps300 one FT THORN TWEETEr removed 2-COILS, wired tweeter with caps reversed polarity .Sounds ok tweaking to come . ede attache photo
Attached Images
File Type: jpg ob.jpg (53.9 KB, 45 views)
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Optimus LX8 crossover wiring Flyingeyepro Multi-Way 2 17th December 2008 05:36 PM
PTP Active Crossover Wiring paulhfx Multi-Way 3 22nd August 2005 02:35 AM
This crossover wiring correct? Rufes1 Multi-Way 6 5th February 2004 04:46 AM
I need help wiring a simple crossover shadiedog87 Pass Labs 6 6th December 2003 04:03 PM


New To Site? Need Help?

All times are GMT. The time now is 09:50 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2