Under the dustcap . . . - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

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 14th June 2006, 10:49 PM   #1
Kensai is offline Kensai  United States
diyAudio Member
 
Join Date: Jan 2004
Location: St. Louis
Send a message via AIM to Kensai
Default Under the dustcap . . .

I can't remember the brand/model of these speaks, but the add I saw in Home Theater magazine was a 5.1 set of black spheres. The satellites were single driver (4"-5") with their dust caps (or whatever you'd want to term them in this case) shaped like a high frequency cone (a whizzer that's an in-ee instead of an out-ee). I'm guessing this is accompanied with literature explaining how important point source and time alignment are, yada, yada, yada.

What I'm interested in, is making something like this out of existing drivers. Would this actually work as well or better than whizzer cones? Other than needing to make sure that this is shallow enough not to not to hit the pole piece on the back stroke, are there any other physical considerations such as optimal shapes, depths, etc.?

How about considerations of what type of drivers that would be moded this way? I'm guessing that using a driver that's already bicone and trading this structure for the existing whizzer would be fine. Do you think that it would be okay to mod larger drivers (10"+) like this? Nothing with a large voice coil, of course, as they're already low passing themselves just due to the coil's inductance, but I've seen 10" and 12" PA drivers with whizzers (rated up to 9khz and 7khz each, though I've seen phase plug moded 10"ers rated up to 12khz). I'm guessing that an 8"er with a moderate Fs at best is going to be as far as you could go with any hope of getting full range performance, but I think it might be possible to go larger as long as you're willing to use a supertweeter.

I prefer to get as much bottom end out of a full ranger as possible and bring in a super tweet if necessary, so this seems like an interesting path of research. Any thoughts?

Kensai
  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
What happens to a speaker when you remove the dustcap? davidallancole Multi-Way 23 23rd October 2013 11:51 PM
WTB: Eton 7-375 (Silver dustcap) fishball79 Swap Meet 0 18th November 2008 02:57 AM
Help! Buzzing sound from dustcap angsuman Subwoofers 1 28th January 2006 04:36 AM
Dynaudio dustcap removal?? AJinFLA Multi-Way 3 30th April 2005 10:16 PM
porous dustcap capslock Multi-Way 4 10th January 2003 08:43 AM


New To Site? Need Help?

All times are GMT. The time now is 03:17 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