tweaking the Fostex 206E - Page 3 - 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 4th November 2006, 01:54 PM   #21
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Ron's design is indeed excellent by all the accounts I've heard. But it's a pig to build unless you're pretty good with the old table saw, and have a decent selection of tools. Either this or the 208ESigma cabinet would be my top choices of popularly available 'proper' BLH designs. For something a little different, the Bruce V1.1 BVR double horn should work rather nicely...

Blu-Tak? It's a removable, re-usable product usually used for, say, attaching posters or notes to the wall.
__________________
Community sites www.frugal-horn.com http://frugal-phile.com/
  Reply With Quote
Old 4th November 2006, 02:15 PM   #22
Ken L is offline Ken L  United States
diyAudio Member
 
Join Date: Sep 2002
Location: deep south
Quote:
Originally posted by fergs1

4. damp chassis(masses of blutack)
I used a product available from HVAC supply houses.

Might be cheaper, easier.

Product name

Sealastic -

sealing compound - stays soft permanently - used primarily for sealing refrigeration and airconditioning holes - to make airtight

Probably available under various names - the decades old brand in the US was Permagum -

good stuff
__________________
No longer powered by Linux - not enough apps and cross platform integration - but maybe one day
  Reply With Quote
Old 6th November 2006, 09:12 PM   #23
diyAudio Member
 
Join Date: Dec 2005
Location: Bologna
My BR cabient now sounds great, it wouldn't be possible without your help, thank you.

Butt I would like to try my fostex in horn cabinet, I'm too curious to see how it sounds.I start reading a lot great things about.So I'm searching this forum for projects. I don't need a horn that goes down to 20hz I need a "a rich and full bass" to 40hz, where music plays
  Reply With Quote
Old 6th November 2006, 11:10 PM   #24
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Fostex FE208ESigma horn.

Bruce V1.1

Ron's Dallas II

All will thunder down to 40Hz or a bit lower. Just don't build the factory 206 horn cabinet. It could be worse, but the others are far better designs and will allow your drivers to show their full potential.

Warning: once you hear them in a decent horn, you'll never go back to reflex.
__________________
Community sites www.frugal-horn.com http://frugal-phile.com/
  Reply With Quote
Old 6th November 2006, 11:49 PM   #25
ronc is offline ronc  United States
diyAudio Member
 
Join Date: Mar 2003
Any true horn action in the range of 40 hz is going to be HUGE!
The only way to realistically approach the problem is to depend on TL action for the lowest frequencies and blend in the horn action at a higher frequency.
With the proper application of K-horn theory you can smooth out the ripple somewhat, but at a loss in LF efficency (its all an average and somewhat of a trade off).
Proper designed horns will deliver a "fast " bass that if you havent heard will amaze you. They way outperform a BR simply due to the much greater BW and again if properly designed will require no BSC.
I perfer low Qts drivers as the speed makes for a very relistic sound reproduction and if you are going for a single driver FR system with a low Qts driver, then BLHs are the answer.
If you have a slightly higher Qts driver like the 207 or 167 then Martins or Bobs MLTL designs will perform well with a much simpler cab.

ron
  Reply With Quote
Old 7th November 2006, 02:25 AM   #26
joval1 is offline joval1  New Zealand
diyAudio Member
 
Join Date: Jul 2006
Hi all
I am following this thread very closely as I have just built a MLTL cab for my 206 as per MJK's including the standard bsc + series resistors (currently set at 3.3 ohms, I welcome any comments on this value). Sounds ok but not great so I bought a couple of decware phase plugs and plan to do the surgery on the weekend. My question is would a blh cab negate the need for phase plugs.
  Reply With Quote
Old 7th November 2006, 03:47 AM   #27
Ken L is offline Ken L  United States
diyAudio Member
 
Join Date: Sep 2002
Location: deep south
Quote:
Originally posted by testarossa2k
I don't need a horn that goes down to 20hz I need a "a rich and full bass" to 40hz, where music plays
Front horns have a lower acoustic cutoff relative to the size of the horn mouth.

My round Azurahorns are 38" in diameter.

They start cuttiing off around 120hz.

They're pretty much gone by 96 hz or so.

So I crossover to subs at that point

regards


Ken L
__________________
No longer powered by Linux - not enough apps and cross platform integration - but maybe one day
  Reply With Quote
Old 7th November 2006, 08:55 AM   #28
hm is offline hm  Europe
diyAudio Member
 
hm's Avatar
 
Join Date: Feb 2004
Location: near Hamburg Germany
Default 38 Hz with 98 dB

donīt forget one of the smallest horns for
8" driver the saxophon,

http://www.hm-moreart.de/104.htm

new technic:
membran movement interlacing and horn mouth distance

with measurements, who else have it?,
free download plan, with the cheap
BG20 from Visaton indirect and a front driver
like AN8" and Fostex 206E.

look and follow the red arrow.

google translate helps.
Attached Images
File Type: jpg saxophoninnen1.jpg (30.8 KB, 890 views)
__________________
http://www.hm-moreart.de
  Reply With Quote
Old 7th November 2006, 10:01 AM   #29
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
No, get the phase plugs in them anyway. They'll take the top end down a touch, give you more midrange detail (& smoother too) and kill the hollow pole-piece resonance.
__________________
Community sites www.frugal-horn.com http://frugal-phile.com/
  Reply With Quote
Old 7th November 2006, 11:19 AM   #30
steenoe is offline steenoe  Denmark
diyAudio Member
 
steenoe's Avatar
 
Join Date: Mar 2004
Quote:
Yes, I've heard the recommended 206 cabinet. Not impressed. Even less so when I decided afterward to run a few MathCad sims (I apply the same comments to the 166 BTW enclosure too. This cabinet type is not one of their best). The 208 box OTOH I heard recently at a friend's house, and came away very impressed indeed.
Maybe a bit OT but Scott, would the 166E's also be better in the 168E Sigma recommended BLH, as the 206 are in the 208 horn's as you suggest?

Steen
  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
Fostex 206E ML TL panord Full Range 16 7th January 2013 06:48 PM
WTB: Fostex 206e or 207e d to the g Swap Meet 5 28th October 2009 07:36 PM
Fostex 206E in Big Fun Horn atilsley Full Range 0 8th September 2008 07:23 AM
fostex 206e's WANTED brettleasure Swap Meet 5 29th August 2005 01:56 AM
fostex fe 206e drivers bossco Multi-Way 0 24th April 2005 07:30 PM


New To Site? Need Help?

All times are GMT. The time now is 10:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2