6moons fullrange measurements - Lowther vs. Fostex - 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 1st October 2009, 08:49 PM   #1
Defo is offline Defo  Norway
diyAudio Member
 
Join Date: Nov 2008
Default 6moons fullrange measurements - Lowther vs. Fostex

http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.
  Reply With Quote
Old 1st October 2009, 09:13 PM   #2
chrisb is offline chrisb  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Quote:
Originally Posted by Defo View Post
http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.
well, how about that measurements tell only part of the story
__________________
you don't really believe everything you think, do you?
community sites t-linespeakers.org, frugal-horn.com commercial site planet10-HiFi
  Reply With Quote
Old 1st October 2009, 09:44 PM   #3
MJK is offline MJK  United States
Account disabled at member's request
 
Join Date: Feb 2002
Location: Clifton Park, NY
Quote:
Originally Posted by Defo View Post
http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.
If you heard both you would know the difference. Fostex makes a nice driver at a very attractive price, but it does not perform like a Lowther driver (even the lowest priced PM6C).
  Reply With Quote
Old 1st October 2009, 10:12 PM   #4
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by Defo View Post

Fostex driver measures so much better then a 1700$ Lowther?
Those are only on-axis (and 1 filtered) FR curve. Toole's new book summarizing 40 years of research shows that that by itself is of little help when it comes to correlation with what people find better.

Toole's metric, which he has shown correlates with blind listening tests, requires 70 FR measures in an anechoic chamber good down to the transition frequency.

Since that is not likely to be possible for any of us diyers we just have to listen, and use the FR measures we do make as a tool.

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 1st October 2009, 11:19 PM   #5
diyAudio Member
 
norman bates's Avatar
 
Join Date: Nov 2003
Location: iowa
True.

I am no longer afraid of a rising response in a full range driver and a fe206e may be in my future.

The highs arn't supported as well 10' away (the larger the driver, the less off axis dispersion as you go up the freq range).

Or you just sit a little off axis.

I remember a comment about the fostex ft17 (perfect looking frq at madisound).
http://www.madisound.com/catalog/PDF...vers/ft17h.pdf

"Well, I was up too late last night Googling for the Fostex FT17 and there are many people recommending it. There were a couple of exceptions though, notably Dick Olsher who tried one with his BassZilla and found it made a spitting noise!" (from diyaudio)

and Olsher saying ft17 lacked resolution............ (can't remember but if forced I may be able to find it).

Yea, a waterfall plot, harmonic distortion, and IM distortion would help decribe a driver better than just a freq response.............

But I agree, those graphs SCARE me !!!!!!!!!!!


Norman
  Reply With Quote
Old 2nd October 2009, 12:19 AM   #6
diyAudio Member
 
Join Date: Feb 2006
Location: usa
Blog Entries: 1
might be a good idea to use a piece of foam in front of driver with rising response.
  Reply With Quote
Old 2nd October 2009, 05:31 AM   #7
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
Quote:
Originally Posted by Defo View Post
http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.
Those are Nelson Pass' measurements with a high output Z amplifier. The article is on the Pass DIY site in full under 'Current source amps and speakers', or something close to that.
  Reply With Quote
Old 2nd October 2009, 05:53 AM   #8
diyAudio Member
 
Join Date: Aug 2009
Location: San Diego, CA
Forget about the amps, fr, impedance graphs and w/e... what I want to know is HOW THE HELL does someone get those KleinHorns through the door into their house?!
  Reply With Quote
Old 2nd October 2009, 06:01 AM   #9
CLS is online now CLS  Taiwan
diyAudio Member
 
Join Date: Jun 2005
Location: Taiwan
Read the article.

The horn is assembled by several removable parts.
  Reply With Quote
Old 2nd October 2009, 06:48 AM   #10
diyAudio Member
 
Join Date: May 2001
Location: Bangalore, India
Does anyone have similar curves and network specs for the Fostex FE168ESigma drivers? Thanks.
__________________
Sam
  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
LOWTHER vs FOSTEX -Opinions please TEXAS TOMM Full Range 77 17th September 2013 03:04 PM
For Sale: Lowther Fullrange Drivers - $10/ea! Spasticteapot Swap Meet 1 2nd April 2007 01:31 AM
Lowther - measurements jirka Full Range 61 18th October 2006 09:11 PM
fullrange horn saxophon, measurements hm Full Range 3 22nd May 2006 01:13 PM


New To Site? Need Help?

All times are GMT. The time now is 02:18 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