onken as a near field monitor - 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 8th May 2011, 01:07 PM   #1
togril is offline togril  Australia
diyAudio Member
 
Join Date: Apr 2011
Location: Humpty Doo, N.T
Default onken as a near field monitor

hello everyone.

Have been trying to gather some feedback about directions, so going to be more specific now:

I guess this may be for Mr planet 10 - but:
Would a fonken work well as a near/mid field monitor? And specifically, would it work well with a TB W5-1611SA - 5inch?

Thanks!
Tgril.
  Reply With Quote
Old 8th May 2011, 01:38 PM   #2
diyAudio Member
 
Join Date: Feb 2009
As there are many iterations of the onken, which one are you referring to? I suspect the smaller ones would work very well NF, but the flange of the TB w5-1611 is likely too large for the chamfered baffle micro/milli/prime. This driver has alot of potential IMO, and deserves a dedicated design. I may just get to work on one.
__________________
It is only rarely that one can see in a little boy the promise of a man, but one can almost always see in a little girl the threat of a woman. ~Alexandre Dumas

Last edited by steviedon; 8th May 2011 at 01:46 PM.
  Reply With Quote
Old 8th May 2011, 11:10 PM   #3
togril is offline togril  Australia
diyAudio Member
 
Join Date: Apr 2011
Location: Humpty Doo, N.T
Yes - trying to work out the itterations of the Fonken familly. Basically the Prime I think:
New Fonken pair is born.

What would be required to work out the sizes - I found a calculator link on a thread here - but 'tis dead.
I also believe there is potential, but limited budgets mean I can't really experiment that much.
Fonkens are just so NICE!
  Reply With Quote
Old 9th May 2011, 02:40 AM   #4
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Every driver has a specific miniOnken/Fonken.

I'd have to run the numbers to see if this driver could be made to work.

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 9th May 2011, 03:39 AM   #5
diyAudio Member
 
vinylkid58's Avatar
 
Join Date: May 2005
Location: Victoria, B.C.
Quote:
Originally Posted by togril View Post
Would a fonken work well as a near/mid field monitor? And specifically, would it work well with a TB W5-1611SA - 5inch?
Using WinISD, the W5 looks pretty good in an 18 liter box, F3 at 50Hz. With 6 vents, each one would measure 100mm x 9.0mm x 283mm long.

BTW, this is Q3B tuning, not real Onken tuning.

jeff
Attached Images
File Type: jpg W5-1611 onken.jpg (205.5 KB, 593 views)
  Reply With Quote
Old 9th May 2011, 04:38 AM   #6
togril is offline togril  Australia
diyAudio Member
 
Join Date: Apr 2011
Location: Humpty Doo, N.T
Thanks Dave and VynilKid58.
I am extremely interested in building this.
Is there an amount of "chuffing" with the fonken/onken port design? (port noise)

Am also assuming that the length of port is dictated by the "inner" wall (behind the battons)?

50hz is quite respectable for me.
  Reply With Quote
Old 9th May 2011, 05:27 AM   #7
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
We've not had any chuffing issues with our builds... vent wants to be long.

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 9th May 2011, 08:31 AM   #8
togril is offline togril  Australia
diyAudio Member
 
Join Date: Apr 2011
Location: Humpty Doo, N.T
Quote:
Originally Posted by planet10 View Post
We've not had any chuffing issues with our builds... vent wants to be long.

dave
Excellent.
If I can ask, would the panel width and be the same 12mm / 1/2inch for the larger 18ltr cabinet? (and wool felt thickness)...

.....Actually, I have just been looking at the fonken plans, and realise i't's not just a case of altering the internal volumes and internal "walls" (vent length?).

Well, I'm still very keen to give it a go.

tgril
  Reply With Quote
Old 9th May 2011, 12:25 PM   #9
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Actually, the Fonken isn't a 'real Onken' either. The Onken can trace its lineage back through the Jensen Ultraflex to Thuras's original BR, & it's principle goal is to use its massive vent system to provide maximum efficiency at Fb. Dave's Fonkens, despite their similar appearance, use their high aspect ratio vents to provide something more akin to an aperiodic alignment.

At a fundamental level, all vented cabinets are tuned by altering their Vb and vent dimensions to achieve a desired tuning alignment with a given drive unit. Whether that merits a 'just' is rather more open to question though, as this, except in the case of drivers which are drop-in replacements for one already used in a given enclosure, essentially means 'design a new cabinet from scratch.'
  Reply With Quote
Old 11th May 2011, 12:43 PM   #10
togril is offline togril  Australia
diyAudio Member
 
Join Date: Apr 2011
Location: Humpty Doo, N.T
Quote:
Originally Posted by vinylkid58 View Post
Using WinISD, the W5 looks pretty good in an 18 liter box, F3 at 50Hz. With 6 vents, each one would measure 100mm x 9.0mm x 283mm long. BTW, this is Q3B tuning, not real Onken tuning.
jeff
Well, Ive tried the following tools: BassBox6, WinISD (seems well used here) , the Onken XLspreadsheet calculator, and a 3D package (maya) and I can't get any of the numbers to work. Not bad for a noob!
Mainly it comes down to fitting the vents in and still having enough width on the baffle. Can get either one, but not the other. Ive been squishing 3D boxes until my eyes bleed.
...Now I realise I could ......ok.... am missing many things here, but I can't see a way of making it fit.

Balls : )
Tog.

Last edited by togril; 11th May 2011 at 01:12 PM.
  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
12" Tannoy Monitor Golds in Onken cabinets. Holty Multi-Way 19 27th May 2011 11:44 PM
onken Onken w or A7 or Valencia gunnt Multi-Way 82 12th December 2010 02:20 PM
Onken, anyone? cyclotronguy Multi-Way 155 28th May 2009 05:22 AM
Unusual computer near field monitor Hezz Multi-Way 7 26th March 2008 12:00 AM
low cost (70 max), near field monitor/bookshelf speaker. Puggie Multi-Way 7 24th October 2004 09:36 PM


New To Site? Need Help?

All times are GMT. The time now is 03:23 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