Canned Crossover Design - What Next? - Page 15 - 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 16th April 2013, 07:57 PM   #141
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Are these two resistors an L PAD?

Am I getting warmer
Attached Images
File Type: jpg Temp.jpg (33.3 KB, 90 views)
  Reply With Quote
Old 17th April 2013, 12:13 AM   #142
gman76 is offline gman76  United States
diyAudio Member
 
Join Date: Apr 2007
Quote:
Originally Posted by ODougbo View Post
Tried the xo in last post - okay, thought I lost some bass with the 16g series woofer coil. I switched it out with a 14g and used 14g feed wires, quite the improvement (bass).

I thought the tweeter sounded a little hot on some songs, so swapped the 1st tweeter resistor; 2.2ohm with a 3.3ohm ....They sounds nice, they pound, kick, slam and have nice high end.

(ordered some steel lam inductors - will try that next)
Visions of the DQ10 are coming back ...

Last edited by gman76; 17th April 2013 at 12:28 AM. Reason: EDIT: referring to photo of xo on top of cabinet with tweeter seemingly stand-mounted
  Reply With Quote
Old 17th April 2013, 08:23 AM   #143
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
I saw that "cut-out" on here somewhere, it seems to enhance the imagining.

Going to experiment with the tweeter LPad, make sure I'm not missing out something good. Not sure why it is in there:
SF 8" is 93.7db
ScanSpeak Tweeter 91.4db

[soon will try the ScanSpeak with smaller 6.5"]
Attached Images
File Type: jpg Lpad.jpg (28.3 KB, 81 views)
  Reply With Quote
Old 19th April 2013, 12:18 AM   #144
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Penny pinching here, resorting to cardboard. Will fit into base/stand soon.
Attached Images
File Type: jpg DSCN1447.JPG (345.4 KB, 71 views)
  Reply With Quote
Old 21st April 2013, 10:32 PM   #145
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Still going here, made a 3rd 8" box. It is a little smaller and tuned a just a bit lower. Also added damping wool to both, 8.5 oz.

[also used better grade wood]

Results, more bass and better middle, the tweeters are starting to shine a bit. I had to move the speakers out from the wall, was starting to pick up some boom.

**
Still really happy with the 6.5" and vifa, that's a good little speaker; too bad the cost of copper is so high now (that runs up the price on a set).
Attached Images
File Type: jpg w20 SMALLER.jpg (20.1 KB, 61 views)
  Reply With Quote
Old 25th April 2013, 09:55 AM   #146
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Pic of # 3 8" SF woofer/Discover tweeter.
Still not as much deep bass as the 6.5" (although its not a wimp either).
Going to start #4 today, not sure what to try next, maybe reducing box size another 50 square inches.

[but it all works together, e.g. box depth/height control vent sizes]
Attached Images
File Type: jpg 4 25.JPG (335.7 KB, 55 views)
  Reply With Quote
Old 26th April 2013, 08:48 AM   #147
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Pic of #4, this one has more of a "biff" than a "boom" so maybe this is the ticket. [there are a few small improvements]

*** Would like to try a 6.5" MTM (2nd pic), in a 24 - 25 liter "tower", again xo is a roadblock.

I'm guessing 2 - 4ohm or 2 - 8ohm woofer combinations is typical; next question would be would there be two inductors - or just one
Attached Images
File Type: jpg 4 26.JPG (318.2 KB, 14 views)
File Type: jpg 2 26 2.JPG (282.0 KB, 19 views)
  Reply With Quote
Old 26th April 2013, 02:43 PM   #148
diyAudio Member
 
Join Date: May 2009
Location: Seattle, WA
Using 2 8ohm drivers in parallel will result in a much more efficient, 4ohm speaker; If you arranged them in a 2.5way configuration then you could just use a single inductor on the bottom woofer to roll it off at baffle step. But I think the crossover would have to be redesigned, at least to the extent that different values would be needed to compensate for the lower impedance of the two woofers.
__________________
Then again, what do I know?
  Reply With Quote
Old 26th April 2013, 03:05 PM   #149
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
2.5 vs. MTM

www.madisound.com/kits/2.5-way-kits.php
  Reply With Quote
Old 27th April 2013, 12:21 PM   #150
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Much fun

Can anyone tell me what's the difference between MTM and a 2.5?
Attached Images
File Type: jpg 4 27.jpg (80.8 KB, 13 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
Need help with 2 way crossover design Needadispenserhere Multi-Way 11 11th February 2011 01:13 PM
FS: low noise, sealed canned transformer 60-0-60vac gengis Swap Meet 4 5th January 2008 12:44 AM
FS: Potted and Canned 700VA Toroids K-amps Swap Meet 1 23rd November 2005 12:39 PM
Help with a crossover design... BAM Multi-Way 0 15th October 2003 02:01 PM
Crossover design. bets. Multi-Way 6 27th July 2003 06:45 PM


New To Site? Need Help?

All times are GMT. The time now is 01:39 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