2.5-way crossover design - Page 3 - 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 17th July 2008, 04:04 PM   #21
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Quote:
Originally posted by AdamThorne
On the topic of 2.5 cross design, but off of the current project...

Can you make a series .5 cross design? For example if you have two 4 ohm drivers? I was thinking you might just bypass one driver with a cap, but then I wondered if that would screw up the rest of the setup.

Just wondering.
Hi,

It is possible but I've never seen it. Unlike the parallel arrangement
it will not implement BSC. Response remains flat and the impedance
drops to half. Consequently the 0.5 frequency does not need to be
set in relation to baffle width. It will stop lobing between the drivers
and you will still need BSC, so overall the impedance would likely
remain 8 ohms and you can choose any amount of BSC you like.
(Unlike parallel BSC which is 6dB correction by default.)

/sreten.
  Reply With Quote
Old 17th July 2008, 09:14 PM   #22
diyAudio Member
 
Join Date: Mar 2008
Quote:
Originally posted by sreten



Hi,

Well actually it is not my opinion, check out the test of
the MW166 at zaphaudio.com , its not great at $107.

I do not know of any independant test of the $80 MDT32S,
the known / tested benchmarks for DIY softdome tweeters
are the $40 Seas 27TDFC / and $80 Peerless 810921.

/sreten.
I have read Zaph Audio article regarding midwoofer comparision but I already have purchased the first pair of speakers.

I respect Zaph and I believe he's a true autority (I've built one of his bookshelf speakers). Sure his considerations are not happy to read... but other folks claim they are pretty good midwoofers.

Anyway
thanks for your suggestions
  Reply With Quote
Old 18th July 2008, 09:33 AM   #23
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

The adventurous might consider different 2.5way drivers .......

/sreten.
  Reply With Quote
Old 18th July 2008, 10:07 AM   #24
diyAudio Member
 
Join Date: Mar 2008
Quote:
Originally posted by sreten
Hi,

The adventurous might consider different 2.5way drivers .......

/sreten.
Sure, but that's the stuff I have now and would like to use....
Maybe once finished I'll be disappointed but anyway I need some basis to express my critics and learn to do better.

(I don't want the fish, I'd like to learn fishing)



  Reply With Quote
Old 18th July 2008, 11:57 AM   #25
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

Fair enough but you may have misunderstood.
MW166 as the 0.5 way driver + something else, like the XT/XG18 ....
was what I meant by different drivers ....

/sreten.
  Reply With Quote
Old 19th July 2008, 01:45 PM   #26
diyAudio Member
 
Join Date: Mar 2008
Quote:
Originally posted by sreten
Hi,

Fair enough but you may have misunderstood.
MW166 as the 0.5 way driver + something else, like the XT/XG18 ....
was what I meant by different drivers ....

/sreten.

Oh... now it's ok! ROGER!
I'd prefer using equal driver configuration due to the first shared inductor, that's why.

Anyway, it seems the only software tool capable of managing 2.5 way crossover networks is lspCAD, can you confirm?

thanks
  Reply With Quote
Old 19th July 2008, 05:29 PM   #27
Jay_WJ is offline Jay_WJ  United States
diyAudio Member
 
Join Date: Mar 2006
Location: Indiana
Any crossover modeling programs can handle 2.5-way crossovers. Even free PCD and Speaker Workshop can.
  Reply With Quote
Old 19th July 2008, 05:37 PM   #28
pjpoes is offline pjpoes  United States
diyAudio Member
 
Join Date: Jan 2005
Location: New York
Send a message via AIM to pjpoes
Yeah I use Speaker Workshop for this all the time. The FRD Consortium Passive crossover calculator spread sheet can also do so, though I find it a "less good" program. I often use it for calculations and its easier ability to calculate phase and impedance plots on the fly, but otherwise put little merit in the program. I would recomend Speaker Workshop as a fairly capable program, being free and all.
  Reply With Quote
Old 22nd July 2008, 11:40 PM   #29
diyAudio Member
 
Join Date: Mar 2008
Hey,
finally I discovered LoudSpeaker LAB having a wizard which automatically calculates 2.5 way networks according to specified sizes of baffle: Good for me!

Here's attached a preliminary graph set, what you think about it?
Please share your opinions....

thanks
GM
Attached Images
File Type: gif summed-response.gif (39.3 KB, 226 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
How do you design a crossover?????? legendaryfrog Multi-Way 25 19th November 2006 09:23 PM
I need to design a crossover. j.burtt Multi-Way 3 11th May 2006 09:10 AM
crossover design keroo Multi-Way 1 1st May 2005 12:03 AM
crossover design Dave Jones Multi-Way 10 21st September 2003 07:38 PM
Crossover design Bose(o) Multi-Way 23 11th February 2002 07:22 AM


New To Site? Need Help?

All times are GMT. The time now is 06:19 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