fostex 6" quandry - 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 9th September 2004, 05:51 PM   #1
navin is offline navin  India
diyAudio Member
 
navin's Avatar
 
Join Date: Jan 2002
Location: Mumbai (Bombay), India
Send a message via MSN to navin Send a message via Yahoo to navin
Default fostex 6" quandry

A friend of mine has built a 9-10W SE tube amp. Now his existing speakers (Wilson Benesch Act 1) are not sensitive enough.

So I recomended he look at the Fostex 6" that are all about 94db/1W. He hos not built a speaker before and would like to know why the 168Sigma is twice the cost fo teh 1666/167 or FF165K. Is it worth the difference. He says he would like to build only one system and not have regrets later.

$170 per driver for teh 168 Sigma did not faze him. In either case he prefers to play safe and go with teh plans Fostex provides unless I can find him a plan that has been built before.

His musical tastes are 80% jazz, some vintage (60s-70s) rock and a bif of teh more well known classical scores but he likes it loud (atleast louder than I like it). He is looking at 100db across the musical spectrum.

BTW would his Velodyne 18" subs integrate well with teh Fostex? The work quite well with his Act 1.
__________________
...still looking for the holy grail.
  Reply With Quote
Old 9th September 2004, 05:54 PM   #2
hacknet is offline hacknet  Singapore
diyAudio Member
 
Join Date: Nov 2002
Location: sg
the 168 was built for a horn loaded cabinet. it has a chunkier magnet and thus the cost. i`ve heard it before and it does sound rather good. it requires fostex propritary sound diffusers to sound good thou...

if money is no object, i`d recommend the F200A. its probably the best FR around nowadays at that price range..
  Reply With Quote
Old 10th September 2004, 05:12 AM   #3
navin is offline navin  India
diyAudio Member
 
navin's Avatar
 
Join Date: Jan 2002
Location: Mumbai (Bombay), India
Send a message via MSN to navin Send a message via Yahoo to navin
F200A = $400. Ouch. I think he get fazed by that. I know he did not want to pay for Lowthers. Besides it is only 90db/1W.

Lets say $150 per side is what he can afford or to be more precise $150 per side is what I would recomend he spend after all this is his first DIY system.

Also i wonder if a 8" system would be too large for his bedroom. He does have the Act 1+Velodyne for his living room.

The room is 15' x 12' x 9' high. The speakers will be kept along the 15 ' wall flanking a 32" LCD TV. He was loking at a compact speaker say 8-9" square x 36" tall so I am looking at drivers that will work in about 22-25 liters.
__________________
...still looking for the holy grail.
  Reply With Quote
Old 10th September 2004, 05:04 PM   #4
diyAudio Member
 
Josephjcole's Avatar
 
Join Date: Jun 2004
Location: Wisconsin
If he is sure he was going to be using it with a sub I would skip the rear loaded horn and go for the fe167 or 168e sigma in a sealed enclosure. This sould intagrate much better than a backloaded horn, or BR enclosure. Just be sure the sub sounds alright to 100hz or whatever you need to go to.
Joe
  Reply With Quote
Old 11th September 2004, 07:27 AM   #5
navin is offline navin  India
diyAudio Member
 
navin's Avatar
 
Join Date: Jan 2002
Location: Mumbai (Bombay), India
Send a message via MSN to navin Send a message via Yahoo to navin
No the Fostex will be run fullrange. The Velodybe will stil work with his act1 in teh living room. the fostex and 9W amp are for his bedroom.
__________________
...still looking for the holy grail.
  Reply With Quote
Old 11th September 2004, 11:48 AM   #6
diyAudio Member
 
Bob Brines's Avatar
 
Join Date: Jan 2003
Location: Hot Spring Village AR
Click the image to open in full size.

This is the FR curve of an FE167E in an 40" MLTL. The nearfield/farfield splice is at 522HZ. The is not the finished product. There is no stuffing, no filters and zero break-in. Is this not pretty close to full-range?

Bob
  Reply With Quote
Old 13th September 2004, 05:23 AM   #7
navin is offline navin  India
diyAudio Member
 
navin's Avatar
 
Join Date: Jan 2002
Location: Mumbai (Bombay), India
Send a message via MSN to navin Send a message via Yahoo to navin
sure is! how big is the box. you said 40" MLTL that means the box is 40" tall. what are the width and depth?
__________________
...still looking for the holy grail.
  Reply With Quote
Old 13th September 2004, 11:42 AM   #8
diyAudio Member
 
Bob Brines's Avatar
 
Join Date: Jan 2003
Location: Hot Spring Village AR
Click the image to open in full size.

I.D. 40x8.5x8.5in port 3x4in. Finish is MinWax Golden Pecan and three coats of MinWax Tung Oil Finish on quarter-cut red oak veneer.

Bob
  Reply With Quote
Old 13th September 2004, 11:41 PM   #9
diyAudio Member
 
Join Date: Nov 2003
Location: N. Virginia
Default Ft-1600

Those look great Bob. How does the Fostex driver do at high frequencies? Does it need a supertweeter to give it the '' air '' that some fullrangers seem to lack?
I`ve been admiring those tls of yours for a while now. Up to now i`ve only tried BR designs with the FX200s but i`m considering giving yours a try. Can you share the dimensions so i can try a set for myself?
Regards, Steve.
  Reply With Quote
Old 14th September 2004, 12:04 AM   #10
diyAudio Member
 
Bob Brines's Avatar
 
Join Date: Jan 2003
Location: Hot Spring Village AR
Steve,

I did a conventional taper TL for the F200A, not the FX200. Never worked with the FX200. If you can stand the freight, the bottom of the F200A in a TL is phenominal. Tops not bad, but a super tweeter would help. Better hurry, though. I understand that teh are soon to be out-of-print.

If you look at the trace above, the FE167E goes strong to ~13K, then is down 3dB to above 20K. It does beam though. A super tweeter firing off-axis is often a good bet.

Bob
  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 Does Fostex "Rated Input" and "Music Power" mark02131 Full Range 5 13th October 2012 05:18 AM
Petite Onken Quandry hatfield Multi-Way 8 15th November 2006 04:46 PM
Fostex "rated input" and "music power" hugz Full Range 12 16th March 2006 04:33 PM
TL quandry (post is not the project ) Madmike2 Full Range 44 10th May 2005 06:36 AM


New To Site? Need Help?

All times are GMT. The time now is 07:29 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