Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

Woofer for tiny closed box.
Woofer for tiny closed box.
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 19th June 2014, 06:57 PM   #11
system7 is offline system7  United Kingdom
diyAudio Member
 
system7's Avatar
 
Join Date: Aug 2008
Location: Portsmouth UK
Quote:
Originally Posted by system7 View Post
It's incredibly simple, just a coil on the woofer and a cap on the cone tweeter.
...snip... It's got great midrange.
An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.


Aw, I gotta be honest. It's got hideous bass cone breakup up high too! They are making my ears bleed!

I think you might get away with this sort of simplistic filter with a polycone midbass, which has natural rolloff, but it sure doesn't work well on a paper bass.

Currently listening to the middle 6" bass and tweeter with 2nd/3rd Order filter. Not bad.
Attached Images
File Type: jpg Tower of Power.jpg (88.7 KB, 152 views)
__________________
Best Regards from Steve in Portsmouth, UK.
  Reply With Quote
Old 19th June 2014, 08:51 PM   #12
midrange is offline midrange  United Kingdom
diyAudio Member
 
Join Date: May 2012
Location: London
Woofer for tiny closed box.
Don't know how good it was but the Technics SB F1 had a cone tweeter too, and that was a high end micro speaker.
  Reply With Quote
Old 19th June 2014, 09:24 PM   #13
system7 is offline system7  United Kingdom
diyAudio Member
 
system7's Avatar
 
Join Date: Aug 2008
Location: Portsmouth UK
Cone tweeters have terrible dispersion, but if you listen to them on or near axis they work superbly well. The idea is they deal with breakup modes better than soft domes. The radiating area simply decreases, whereas a soft dome just loses it completely above 7kHz.

I don't know what the perfect cone tweeter is. It might have a little phase plug in the middle. It might be mylar. But stuff like the TW 70 - 8 Ohm certainly responds well to a 7.5R/1.5uF Zobel if the top end worries you, and are best driven by 6 ohms source impedance or less.

Many famous speakers used them. They have a cheapish image partly because they are cheap to make, and were often used with Mickey Mouse first order filters. But give them a proper third order filter and I don't think you'll be disappointed.
Attached Images
File Type: jpg KLH Model 6.JPG (52.6 KB, 148 views)
__________________
Best Regards from Steve in Portsmouth, UK.
  Reply With Quote
Old 19th June 2014, 10:34 PM   #14
Philosophil is offline Philosophil  Canada
diyAudio Member
 
Philosophil's Avatar
 
Join Date: Sep 2013
Hi midrange.

I'm interested in this kind of project as well but lack the knowledge to properly design all the parts, so if you do come up with something it would be great if you could share the components you're using and other design elements.

I'm more interested in a small Minimus 7 styled speaker that I could hang on the wall. Given this would a bottom port be a possibility (for enhanced low end), one that would still keep the baffle small?

Finally, out of curiosity, has anyone tried to clone the Infinity Infinitesimals? I know that I personally would be very interested in trying something like that!
  Reply With Quote
Old 20th June 2014, 07:58 AM   #15
Moondog55 is offline Moondog55  Australia
diyAudio Member
 
Moondog55's Avatar
 
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
What about another way of looking at the problem?
take a decent 2 or 3 inch full range and add a 4inch woofer as a .5 driver
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"
  Reply With Quote
Old 20th June 2014, 11:08 AM   #16
midrange is offline midrange  United Kingdom
diyAudio Member
 
Join Date: May 2012
Location: London
Woofer for tiny closed box.
Rats, Moondog. That is now yet another project for me to do. Many advantages. Only obvious downside is that a precious litre+ would be used up with a separate sub enclosure for the full range driver.
Philosopil, a wall mounted speaker with a bottom port is an excellent model. I have wall mounted with a side port, which is similar. (They are on a mantelpiece) They are 11"x8"x5.5", so bigger than Minimus 7s unfortunately. Ported speakers need drivers with different characteristics than closed boxes, particularly with very small sizes speakers. But this is the place to find out what drivers are best.
  Reply With Quote
Old 20th June 2014, 06:50 PM   #17
Mario Pankov is offline Mario Pankov  Europe
diyAudio Member
 
Join Date: Aug 2007
Location: Sofia
Woofer for tiny closed box.
I have the SPH-100C, it was ordered for a car install based on my recommendation. Its the 4" with the best low end performance I have heard so far, comparable to a bigger woofer. The breakup is very audible and even if its just 4", I wouldn`t use it above 2.5Khz. Can post some more info on this woofer in the next weeks as I have no measurement rig at the moment, either due to Deutsche post or the people that calibrated the new mic.
  Reply With Quote
Old 20th June 2014, 07:45 PM   #18
DDF is offline DDF  Canada
diyAudio Member
 
DDF's Avatar
 
Join Date: Sep 2004
Location: Ottawa
Searched long and wide for the same, settled on w4-1720. Excellent parameters for a small sealed


Sent from my iPhone using Tapatalk
  Reply With Quote
Old 20th June 2014, 07:51 PM   #19
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Woofer for tiny closed box.
I got Silver Flute W14 working nicely in 5 litre.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 20th June 2014, 08:04 PM   #20
Lojzek is offline Lojzek  Croatia
diyAudio Member
 
Lojzek's Avatar
 
Join Date: Feb 2012
Location: Croatia
Quote:
Originally Posted by midrange View Post
Any suggestions for a woofer (4"?) for a 2-4 litre closed box?
This one might do the job.

W 100 S - 4 Ohm
  Reply With Quote

Reply


Woofer for tiny closed box.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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
8" woofer for closed box FilipeRocha Multi-Way 57 11th March 2012 04:20 PM
suggestions for small closed box woofer exhausted mule Multi-Way 3 21st January 2009 11:25 PM
Closed sub box Tenson Subwoofers 12 27th June 2006 06:53 PM
Home depot sound insulation material for closed box woofer astarter Multi-Way 0 3rd May 2005 07:37 AM
Closed box sub in vented box ? MadMax Multi-Way 3 17th May 2003 01:24 AM


New To Site? Need Help?

All times are GMT. The time now is 02:01 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki