line array with Fostex FE127E - 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 25th December 2006, 08:54 AM   #1
diyAudio Member
 
Join Date: Dec 2006
Default line array with Fostex FE127E

As a first attempt, I have made a 10 liter bass reflex box
for the FE 27E, following the Fostex plan on their website.
The sound is very good: clear mid and highs, very reasonable bass (from about 70 Hz), and stunning detail, space and dynamics. Loudness is limited, however.

Now I want to bring this sound a stage further and plan to build a floorstander with three FE127E each in a line array. For the bass I intend to use my REL Q150MKII.

Do the FE127E need separate chamber of about 10 liter each (with separate ports) or is it possible to combine the volumina to 30 liters and use the same port? Or do I have to alter the port dimensions?

Any advice would be very welcome!
Ramses67
  Reply With Quote
Old 25th December 2006, 09:07 AM   #2
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
You've have to adjust port dimensions. Nothing to stop you building a single box internally divided with a port for each subdivision.

Be aware you're very probably going to loose a lot of HF, and have phase issues by doing this due to comb-filter effects.
__________________
Community site www.frugal-horn.com
  Reply With Quote
Old 25th December 2006, 01:05 PM   #3
adason is offline adason  United States
diyAudio Member
 
adason's Avatar
 
Join Date: Nov 2004
Location: Maryland
that's right, you are asking for trouble in treble area
/due to the size of the driver used and spacing/
use tweeter in the middle of an array
  Reply With Quote
Old 25th December 2006, 06:52 PM   #4
flg is offline flg  United States
diyAudio Member
 
flg's Avatar
 
Join Date: Jul 2005
Location: North East
You might consider only the center driver for the area above BSC? This would avoid the comb filter Bis possibly? You need them mounted as close as possible
  Reply With Quote
Old 25th December 2006, 07:20 PM   #5
Dumbass is offline Dumbass  British Antarctic Territory
diyAudio Member
 
Join Date: Mar 2003
Location: British Antarctic Territory
I agree with the others who fear combing issues.

A smarter approach is a push-push bipole MLTL design like those shown at
http://www.planet10-hifi.com/boxes-fostex.html
  Reply With Quote
Old 26th December 2006, 02:10 AM   #6
diyAudio Member
 
Join Date: Dec 2006
Thank you all, it seems that simply put a few FE127E's in a line array isn't automatically a good idea........
The bipole design is very interesting, as is thinking about a set of completely separate 10 liter boxes, aimed in position.
Pictures coming soon!
  Reply With Quote
Old 26th December 2006, 04:01 AM   #7
Dumbass is offline Dumbass  British Antarctic Territory
diyAudio Member
 
Join Date: Mar 2003
Location: British Antarctic Territory
Quote:
Originally posted by ramses67
Thank you all, it seems that simply put a few FE127E's in a line array isn't automatically a good idea........
I can only surmise you haven't read the nflawp. Read it.
  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
WTB Fostex FE127E john65b Swap Meet 0 30th November 2008 05:35 PM
BSC for Fostex FE127E Metronome bluegti Full Range 1 7th February 2008 05:24 PM
4 Fostex FE127E for sale Tarasque Swap Meet 7 13th May 2007 10:25 PM
Fostex FE127e: Fonken or BIB alexg Full Range 11 8th May 2007 05:15 AM
Any experiences with Fostex FE127E on OB? Norris Wilson Full Range 4 20th December 2006 02:34 AM


New To Site? Need Help?

All times are GMT. The time now is 02:47 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