Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Alpair 6M for Cyburgs Needle / BR M.A. Design
Alpair 6M for Cyburgs Needle / BR M.A. Design
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 26th January 2018, 06:27 PM   #21
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Alpair 6M for Cyburgs Needle / BR M.A. Design
Quote:
If I braced the side panels could i squeeze them down to 12mm?
12mm would do fine… bracing always helps but you’d probably be OK without it. A holey brace, that also braces the driver to the back of the box would be worth going for. You’d want to increas e width by 8mm to account for the volume of the wood in the brace (assumming 30-40% holes)

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 26th January 2018, 06:30 PM   #22
chrisb is offline chrisb
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
whence these names, Scott? At the least I'd expect a Sasquatch to be to a larger beast that this
__________________
like my mind, this space intentionally blank
  Reply With Quote
Old 26th January 2018, 06:35 PM   #23
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Alpair 6M for Cyburgs Needle / BR M.A. Design
They may be diminuative, but like the FH-Lite close your eyes and they sound big.

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 26th January 2018, 09:32 PM   #24
grahamgraham is offline grahamgraham  United Kingdom
diyAudio Member
 
grahamgraham's Avatar
 
Join Date: Oct 2016
Location: London
Maybe because they stand erect?
Quote:
Originally Posted by chrisb View Post
whence these names, Scott? At the least I'd expect a Sasquatch to be to a larger beast that this
  Reply With Quote
Old 26th January 2018, 11:07 PM   #25
chrisb is offline chrisb
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
I dunno - any reputed photos I've seen of the mythical man-beast of the wilds shows it hunched over somewhat. At least the Giraffe for A5.2 made a little bit of sense - tall and skinny from the neck up - but of course, no legs.

Just being silly.
__________________
like my mind, this space intentionally blank
  Reply With Quote
Old 27th January 2018, 08:23 AM   #26
grahamgraham is offline grahamgraham  United Kingdom
diyAudio Member
 
grahamgraham's Avatar
 
Join Date: Oct 2016
Location: London
Thanks, I will have a good think about how to go about it.

Is the height and position of port the most crucial element to this deisgn? Eg, you mention increasing width to accommodate the brace, can it be thinner/ deeper as well? The port would change by 8 mm width.

But like you say, this may be academic as bracing isn't essential.

Thanks to Scott as well!

Quote:
Originally Posted by planet10 View Post
12mm would do fine… bracing always helps but you’d probably be OK without it. A holey brace, that also braces the driver to the back of the box would be worth going for. You’d want to increas e width by 8mm to account for the volume of the wood in the brace (assumming 30-40% holes)

dave
  Reply With Quote
Old 27th January 2018, 08:57 AM   #27
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Alpair 6M for Cyburgs Needle / BR M.A. Design
I’ve updated the drawing & link in my earlier post. Scott did specifiy a Zvent, but that goe sout the window with th eslot vent.

You can change the aspect ratio as long as the net cross-section remains at 13cm2. Don’t make it too skinny (early reflections leed to cupped voices) or square

You have to take care with the slot vent version if you change aspect… the length, width & height of the vent all change.

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 27th January 2018, 10:10 AM   #28
grahamgraham is offline grahamgraham  United Kingdom
diyAudio Member
 
grahamgraham's Avatar
 
Join Date: Oct 2016
Location: London
That's brilliant, thanks!

What does look appealing to me is to switch the depth and width around to 118mm deep by 110 wide as per the original spec. Sorry to trouble further but if I went with the slot port how would I change the port dimensions? I take it that the width of the panel making the slot is part of the length of the port?


Quote:
Originally Posted by planet10 View Post
I’ve updated the drawing & link in my earlier post. Scott did specifiy a Zvent, but that goe sout the window with th eslot vent.

You can change the aspect ratio as long as the net cross-section remains at 13cm2. Don’t make it too skinny (early reflections leed to cupped voices) or square

You have to take care with the slot vent version if you change aspect… the length, width & height of the vent all change.

dave
  Reply With Quote
Old 27th January 2018, 10:13 AM   #29
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Alpair 6M for Cyburgs Needle / BR M.A. Design
Easiest to just leave it and fire it out the side… its time to go to bed (03:15 here), do you want it out the front and 12mm with a brace?

I can figure that out tomorrow.

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 27th January 2018, 02:44 PM   #30
grahamgraham is offline grahamgraham  United Kingdom
diyAudio Member
 
grahamgraham's Avatar
 
Join Date: Oct 2016
Location: London
12mm with no brace fits my implementation best as I will be using the higher mounting position for the driver and at that position bracing will be ineffectual. Am I right in assuming that?

Wow, you're up late bro, rest! And if you do have time for the slimmer 12mm non braced slot port version at 110mm wide I would be bowled over, thanks for all the work so far!



Quote:
Originally Posted by planet10 View Post
Easiest to just leave it and fire it out the side… its time to go to bed (03:15 here), do you want it out the front and 12mm with a brace?

I can figure that out tomorrow.

dave

Last edited by grahamgraham; 27th January 2018 at 02:53 PM.
  Reply With Quote

Reply


Alpair 6M for Cyburgs Needle / BR M.A. DesignHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cyburgs Needle kit ebijma Full Range 5 13th October 2007 10:53 AM
Cyburgs-Needle and Cyburgs-Pipe for FRS 8 Cyburgs Multi-Way 20 2nd October 2007 08:24 PM
Cyburgs-Needle using W3-315SC mariusn Full Range 35 27th January 2007 05:56 PM


New To Site? Need Help?

All times are GMT. The time now is 04:22 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki