4 way speaker with acoustic crossover - 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 20th August 2011, 01:19 AM   #1
diyAudio Member
 
Join Date: Feb 2006
Location: usa
Blog Entries: 1
Default 4 way speaker with acoustic crossover

I'm trying to make a 4 way speaker with acoustic crossover.
Well, it's probably going to be partially acoustic. Ideally there would be just three capacitors and some foam.
I like how enclosure shapes came out, design is accidental. I just rearranged parts of this waveguide TwisterSpeakers: Neo8 planar transducer in a waveguide

DSC_3078.jpg

DSC_3085.jpg

DSC_3081.jpg

IMG_0052.jpg

IMG_0053.jpg

IMG_0056.jpg
  Reply With Quote
Old 20th August 2011, 01:33 AM   #2
diyAudio Member
 
picowallspeaker's Avatar
 
Join Date: Apr 2007
So... the red baffle does it all ?!? Rifraction ,diffraction , small chamber ,lowpass ...
  Reply With Quote
Old 20th August 2011, 01:52 AM   #3
diyAudio Member
 
Join Date: Feb 2006
Location: usa
Blog Entries: 1
yes, it's a special kind of baffle. red paint helps to reduce bad stray waves. and its shape completely eliminates diffraction.
it's not the final design, you'll see some other objects attached in front of transducers.
  Reply With Quote
Old 20th August 2011, 02:04 AM   #4
diyAudio Member
 
picowallspeaker's Avatar
 
Join Date: Apr 2007
super aerogel pillows ?
  Reply With Quote
Old 20th August 2011, 03:36 AM   #5
diyAudio Member
 
Radugazon's Avatar
 
Join Date: Aug 2010
Location: Sulawesi
sarcastic mode on : this could become a nice couple of Christmas trees, branches helping to control the polar.

sarcastic mode off : why not ? Finally something original, and all the horns and loads are also acoustical devices
  Reply With Quote
Old 20th August 2011, 09:06 PM   #6
diyAudio Member
 
Join Date: Feb 2002
Location: Western Sydney
fantastic design, (monkey coffins are sooo boring)
__________________
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 20th August 2011, 09:15 PM   #7
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
pretty looking drivers too

Good luck with it!
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  Reply With Quote
Old 21st August 2011, 01:42 AM   #8
diyAudio Member
 
Join Date: Feb 2006
Location: usa
Blog Entries: 1
Thanks ) Top three drivers are behaving according to the plan. Only caps and foam work fine, they just need to be better balanced.
The lower woofer(yellow line,unfiltered) is problematic, I need huge amount of foam to make acoustic low pass. I'll try to compress foam(make it denser)or look for another sound absorbing material.
firsst-test.gif
  Reply With Quote
Old 25th August 2011, 07:50 PM   #9
diyAudio Member
 
Join Date: Feb 2006
Location: usa
Blog Entries: 1
Lower driver requires huge amount of foam or pillows to be low passed around 300hz. Probably closed cell foam could work, but unfortunately I don't have one.
I'm going to build bandpass enclosure for this driver (add another box with port)
Can anyone recommend a good free bandpass calculating software?

Overall this acoustic filter concept works very well, I've been using it in my car audio for several month.
I think that a simple block of foam can greatly improve sound of any cheap speaker, when placed in front of the drivers.
  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
Boston Acoustic A200 crossover 503Timber Multi-Way 0 6th July 2011 11:57 AM
Acoustic plus electric rolloff crossover question Tyson Multi-Way 2 25th January 2010 12:54 AM
repair'-Acoustic 450 distorted and low volume. Transistor crossover distortion? Willampsburn Solid State 1 14th March 2008 02:39 PM
Acoustic Crossover kspv Multi-Way 3 8th July 2004 02:07 PM
Definition of 4th order acoustic crossover moving_electron Multi-Way 4 8th April 2004 12:21 PM


New To Site? Need Help?

All times are GMT. The time now is 03:35 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