Full range in the face. Advice please. - 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 16th March 2011, 04:23 AM   #1
cricha5 is offline cricha5  United States
diyAudio Member
 
Join Date: Jan 2011
Default Full range in the face. Advice please.

I just finished making a single ended amp for my computer and I'd like to make a matched set of speakers for it. Two amps done and done! I think I've settled on the Fostex fe126en, but there are too many enclosure,baffle step and Zobel options. The way my computer is set up, the speakers are around 3 feet from my face, which makes me think I'll really need baffle step correction. Or am I thinking backwards about that? Also, I have recently learned how to do simple things with wood, but I am definitely not skilled enough to take on building a horn enclosure. I was thinking either a version of the arpeggio from the articles here on diyaudio or the bass reflex enclosure on the fostex datasheet.

Any advice would be appreciated. Thanks.

Oh, and I listen to all kinds of music, from David Bowie to Bach to Dethklok.
  Reply With Quote
Old 16th March 2011, 05:50 AM   #2
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
The factory enclosures have a rep (deserved) for not being very good. The 126 reflex looks particularily uglu (bottom curve). The other 2 are 4 litres tuned to 105 or 125 Hz.

I'd build the last one with a high resistance vent to flatten the peak and extend the response -- i suspect the vent would need to wrap around the box.

I'd suggest that the FH3 is probably the smallest box that will get decent bass out of these (well maybe a FH1 Level 0 or a modified Buschhorn 1, they are marginally smaller, a lot more complicated, and don't work as well)

To aid your woodwork, flat-paks of the FH3 are becoming available.

dave
Attached Images
File Type: gif FE126En-BR-sims.gif (25.0 KB, 397 views)
__________________
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 16th March 2011, 06:04 AM   #3
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
PS: you going to be using the 6V6 on these?

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 16th March 2011, 06:31 AM   #4
cricha5 is offline cricha5  United States
diyAudio Member
 
Join Date: Jan 2011
Thanks for the info. Yes, the speakers are for the 6sn7, 6v6 amp, not the dc coupled mono one. The mono one is just for the kitchen and is powering a 3 inch hivi in a tin can.
  Reply With Quote
Old 16th March 2011, 07:16 AM   #5
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
f you want small, and some bass, you might well consider the EL70. You should have plenty of power for near-field use.

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 16th March 2011, 07:24 AM   #6
AEIOU is offline AEIOU  United States
Account disabled at member's request
 
AEIOU's Avatar
 
Join Date: Jun 2009
Send a message via AIM to AEIOU Send a message via MSN to AEIOU Send a message via Yahoo to AEIOU
Baffle step is not necessitated by your distance from the loudspeakers. More by their distance from nearby boundaries, significantly the rear wall.
Why would you need a Zobel? Do you plan on crossovering them? Or are you just trying to hold down the rising impedance for your amplifiers sake?


Quote:
Originally Posted by cricha5 View Post
I just finished making a single ended amp for my computer and I'd like to make a matched set of speakers for it. Two amps done and done! I think I've settled on the Fostex fe126en, but there are too many enclosure,baffle step and Zobel options. The way my computer is set up, the speakers are around 3 feet from my face, which makes me think I'll really need baffle step correction. Or am I thinking backwards about that? Also, I have recently learned how to do simple things with wood, but I am definitely not skilled enough to take on building a horn enclosure. I was thinking either a version of the arpeggio from the articles here on diyaudio or the bass reflex enclosure on the fostex datasheet.

Any advice would be appreciated. Thanks.

Oh, and I listen to all kinds of music, from David Bowie to Bach to Dethklok.
  Reply With Quote
Old 16th March 2011, 07:35 AM   #7
cricha5 is offline cricha5  United States
diyAudio Member
 
Join Date: Jan 2011
The setup goes, wall-two foot deep desk-me, walls to the left and right at about 4 feet and about 8 feet behind.

Arpeggio Loudspeaker makes a good argument for a Zobel network for SET amps.

What about a simple Fonken? I think I could build one of those. Can anyone point me to their theory of operation?
  Reply With Quote
Old 16th March 2011, 07:52 AM   #8
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 cricha5 View Post
What about a simple Fonken? I think I could build one of those. Can anyone point me to their theory of operation?
Fonken would work great but you'd have to find some drivers or budget for the tricked out ones. I only have a few pair left (FE126 does not work in Fonken) -- i also have flat-paks for the milli.

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 16th March 2011, 06:48 PM   #9
chrisb is offline chrisb  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Second the suggestion on EL70 / CHR70 for nearfield - BSC not likely to be required.

Box as small as attached would make a pretty decent little desk-top and not a hard build

http://homepage.mac.com/tlinespeaker...map-231009.pdf
__________________
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 16th March 2011, 07:32 PM   #10
cricha5 is offline cricha5  United States
diyAudio Member
 
Join Date: Jan 2011
I've now looked at the EL70, and it looks perfect. Thanks. Decision made. Will try baffle step correction only if needed and no Zobel network. Done.

Now for the enclosure. I really do like the last design posted and I think I can build it, but I don't understand the theory behind it. What is the baffle that divides the driver for? Why not just use a port?

After a failed theremin experiment, I will no longer build something without understanding it completely first.
  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
speaker advice (full range version) ksporry Full Range 2 21st March 2010 01:29 PM
Vintage Full range- Need some cab advice waam68 Full Range 7 19th August 2008 09:30 PM
Advice: a fence post for a full range? sol Full Range 25 1st January 2007 10:26 PM
Advice on full range enclosure for 5.1 setup CDJ Multi-Way 3 21st January 2003 05:28 AM


New To Site? Need Help?

All times are GMT. The time now is 12:00 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