Dynamics, brute force and resolution with tiny feet. - Page 9 - 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 2nd December 2012, 08:36 PM   #81
diyAudio Member
 
ingvar ahlberg's Avatar
 
Join Date: Feb 2004
Location: Kungsbacka on the Swedish westcoast
The tweeters are delivered in matched pairs with actual fr meassurements, nice i think.

Managed to go slow on the glögg, switched to beer instad.

Been a really nice and good sunday with wife and friends, turning in now, have to be really early tomorrow.
__________________
Ingvar
  Reply With Quote
Old 2nd December 2012, 08:49 PM   #82
diyAudio Member
 
Rullknufs's Avatar
 
Join Date: Mar 2010
Location: Sweden
Send a message via Skype™ to Rullknufs
Quote:
Originally Posted by ingvar ahlberg View Post
-8 deg c, a clear blue winter sky, zero wind, quite a bit higher bloodconcentration in the alcohol system, things look different.
Ah, I wish it was that warm up here as well. Today was the day for the annual christmas market in the village and standing outside in -18c for several hours was not the best thing I've done this week.

Ingvar, you sent me the mail/package, right?

The Jake speakers look very cool, maybe something my dad should build?
__________________
My audio and DIY blog: http://phimusic.blogspot.se/
  Reply With Quote
Old 3rd December 2012, 12:53 AM   #83
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Blog Entries: 22
Yes back in 2004 when I was deciding what drivers to purchase for my MTM's I considered the MDT33's for a while (which also came in matched pairs). Terry who I mentioned earlier actually had his own custom versions of those (I think that they may have been horn loaded like the dms37's I ended up getting). The reason for the custom version was to get time alignment with the MW144's without the need for a sloped/stepped baffle.

I suspect that the combo of a CAT378 and a pair of CAW538's should work well together (as they seem to be the newer versions of the mw144 and dms37), you need to surface mount the woofers and flush mount the tweeter for time alignment. Again the info on the MW144 and DMS37 combo came from Terry who had design input into the DMS37 tweeter. Note that I am assuming that the kept the synergy of the old when they designed the new!
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos

Last edited by wintermute; 3rd December 2012 at 12:55 AM. Reason: add links to datasheets.
  Reply With Quote
Old 3rd December 2012, 01:03 AM   #84
diyAudio Member
 
Join Date: Jan 2011
Location: Willamette Valley
The Morel haters will return. Sad people, for whom good isn't good enough. I like the sound of simple filters, but I aspire to simplicity.
  Reply With Quote
Old 3rd December 2012, 06:26 AM   #85
diyAudio Member
 
ingvar ahlberg's Avatar
 
Join Date: Feb 2004
Location: Kungsbacka on the Swedish westcoast
Port is 330mm long, not 418, don´t really know where that figure came from.

Nice to get this whith the hf units.

Click the image to open in full size.

Quote:
The Jake speakers look very cool, maybe something my dad should build?
Why not, they are eminently fun for playing Tony Joe White loud, really loud.
__________________
Ingvar
  Reply With Quote
Old 4th December 2012, 07:41 PM   #86
diyAudio Member
 
ingvar ahlberg's Avatar
 
Join Date: Feb 2004
Location: Kungsbacka on the Swedish westcoast
As the box is so utterly small there´s hardly room fo the intake panel.

Click the image to open in full size.

Worked a bit too much so not enough time to play and listen yet but so far, ridicously fun, especially when playing loud, seems the Morel drivers are dull when playing really soft when they´re not broken in yet.

Measuring is suddenly something uncomprehensible when hf units are of unknown and very wide dispersion design, Horns and amt´s You know how they beam, know reflections, at least somewhat, but how do You meassure really wide dispersion speakers further away than 1m and now what You meassure, room or speaker?

On the other hand, i don´t actually care, these are among the most rewarding, happiest speakers i´ve listened to in a long time, and i suppose low level dynamics will improve with break-in time just as the case was with the Oy speakers.

Ingvar
__________________
Ingvar
  Reply With Quote
Old 11th December 2012, 07:11 PM   #87
diyAudio Member
 
ingvar ahlberg's Avatar
 
Join Date: Feb 2004
Location: Kungsbacka on the Swedish westcoast
New toys arrived today, waited a long time.

Click the image to open in full size.

Box larger than i expected, drivers too, there was no mechanical info available from Mundorf, they´re handbuilt and it has taken quite some time before they finally relased them. Need to redraw first testbox, will be with the Morel EW638, i think.

Airmotiontransformers are, in my experience, so far the best technology for hf transducers, the Heills and Beymas TPL units are fantastic, so this will be really fun to try out.

Click the image to open in full size.
__________________
Ingvar
  Reply With Quote
Old 11th December 2012, 07:38 PM   #88
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Quote:
Originally Posted by ingvar ahlberg View Post
A bit uncertain about where You find this broad 10dB dip in the midrange?
1500-4kHz. -20 goes down to a little above -30 (smoothing would make it look more like 7dB perhaps)

This looks like partial phase cancellation. The filter, in any case, could use some refinement, as this component is likely in the anechoic response as well.
__________________
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 11th December 2012, 08:04 PM   #89
diyAudio Member
 
ingvar ahlberg's Avatar
 
Join Date: Feb 2004
Location: Kungsbacka on the Swedish westcoast
I see that i failed to post later measurements of the Oy speakers here, still there is no 20 or 30dB dip in that first posted measurement of a speaker played for about 1 hour, and first test x-over.

This is the latest measurement of th Oy speaker:

Click the image to open in full size.
__________________
Ingvar
  Reply With Quote
Old 11th December 2012, 09:24 PM   #90
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Nobody said there was a 20 or 30 db dip- -20 and -30 were the y axis references. Newer version looks much smoother (with smoothing) but I'd want to listen off-axis to avoid that large rise.
__________________
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

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
Brute force in a small cabinet... moray james Subwoofers 5 27th September 2012 07:28 PM
Making a low distortion cathode follower preamp by brute force bigwill Solid State 0 12th May 2007 04:53 PM
help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er jarthel Tubes / Valves 9 30th May 2006 07:47 AM
Help on Brute force Ryssen Tubes / Valves 5 2nd May 2004 10:07 AM


New To Site? Need Help?

All times are GMT. The time now is 03:55 PM.


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