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

Compound loading 6th order quarterwave "Super Planar" horns and pipes concepts/builds
Compound loading 6th order quarterwave "Super Planar" horns and pipes concepts/builds
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 29th December 2017, 02:08 AM   #691
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Compound loading 6th order quarterwave "Super Planar" horns and pipes concepts/builds
Very nice body of work Mathew Morgan. I havenít been over to subwoofer forum for some time now so just saw your thread for first time. Neat stuff here.
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio
  Reply With Quote
Old 29th December 2017, 08:11 AM   #692
USRFobiwan is offline USRFobiwan
Horn Addict
diyAudio Member
 
USRFobiwan's Avatar
 
Join Date: Oct 2014
Location: Haarlem
Compound loading 6th order quarterwave "Super Planar" horns and pipes concepts/builds
The top look very robust Matthew. The only thing I do not like are the HF horns. I find it a weird combination of HF drivers. I would rather use a 2" CD driver or dual 1.4" CD horn with a waveguide. I got some idea's for prototyping I will work out the next couple of months.

Is this the one with a better designed front chamber?
Any measurements?
__________________
Destroyed some nostalgia
For the love of Horns and glory of pressure waves.
  Reply With Quote
Old 29th December 2017, 04:03 PM   #693
Matthew Morgan J is offline Matthew Morgan J  United States
diyAudio Member
 
Matthew Morgan J's Avatar
 
Join Date: May 2011
Location: Arizona
Quote:
Originally Posted by xrk971 View Post
Very nice body of work Mathew Morgan. I havenít been over to subwoofer forum for some time now so just saw your thread for first time. Neat stuff here.
Xrk ,
Thank you so very much This means a lot to me because I have always admired your work



There is more to come!
  Reply With Quote
Old 29th December 2017, 04:53 PM   #694
Matthew Morgan J is offline Matthew Morgan J  United States
diyAudio Member
 
Matthew Morgan J's Avatar
 
Join Date: May 2011
Location: Arizona
Quote:
Originally Posted by USRFobiwan View Post
The top look very robust Matthew. The only thing I do not like are the HF horns. I find it a weird combination of HF drivers. I would rather use a 2" CD driver or dual 1.4" CD horn with a waveguide. I got some idea's for prototyping I will work out the next couple of months.
USRFobiwan,
Right, this cabinet would be wonderful as a two-way with a heavy duty compression driver, i totally agree .... I have my eye on that Eminence N314T-8 for the future ... In such a deluxe 2-way model the 12" drivers would also have more motor force, increased power handling, and higher Xmax ratings....


For the low budget version of the 2-way tops i would like to try 12" drivers with very hot upper mids allowing for a higher crossover point , so that a less expensive set of compression drivers can be used ... For a very low budget version we may even try the PA310s with HIGH-Q LPF to give us a nice increase in the upper mid presence before an abrupt cutoff . .

There are definitely a few things i would like to explore but since i am not doing any of the building currently I don't have total control over what drivers are being used ....... It just depends on what the builder has on hand, and what their budget is , or what they can source for the right price ...



Quote:
Originally Posted by USRFobiwan View Post
Is this the one with a better designed front chamber?
Any measurements?
Compared to the original single-path spanned-driver Super Planar Club Tops these symmetrical split-path layout tops don't have quite as much dedicated resonant air-mass in the front chamber, but they shouldn't need quite as much since their fundamental tuning is much higher.......

Measurements (happening over the weekend hopefully) will confirm whether or not the response ripple & hole associated with the FbX3 harmonic have been alleviated to an acceptable degree ....... We can still extend the divider panels forward by a few more inches if it turns out that we need more dedicated resonant air mass in the front chamber ...
  Reply With Quote
Old 29th December 2017, 05:37 PM   #695
Matthew Morgan J is offline Matthew Morgan J  United States
diyAudio Member
 
Matthew Morgan J's Avatar
 
Join Date: May 2011
Location: Arizona
Quote:
Originally Posted by LORDSANSUI View Post
very beautiful design.

Regarding CD horn, hasn't it narrow dispersion?
Thank you, and yes that is correct, the PRV horns that are being used here have narrow dispersion........

Other patterns with different horns can be chosen, it just depends on what your application calls for ..

Multiple narrow dispersion compression driver horns arranged with sufficient splay angle would be a cool solution, or even large Constant Directivity horns with a wider dispersion angle (like these big EV HR series horns that i have) would be great, but those options would probably require that the compression drivers and their horns be placed into their own dedicated topper cabinets and stacked on top of the Super Planars .... Some people might not find it visually appealing but i think it would look impressive!

Last edited by Matthew Morgan J; 29th December 2017 at 05:49 PM.
  Reply With Quote
Old 30th December 2017, 03:02 PM   #696
Matthew Morgan J is offline Matthew Morgan J  United States
diyAudio Member
 
Matthew Morgan J's Avatar
 
Join Date: May 2011
Location: Arizona
Lightbulb Throat chamber (Vtc / Atc) can be used on Super Planar tops!

Quote:
Originally Posted by Fidstang View Post
When modeling these, could you please explain why you choose to not treat the volumes in front and behind the drivers as volumes? I'm having a hard time wrapping my head around the Vrc and Lrc being 0.1, instead of modeling this as you would a Cubo design, with the volume behind the drivers (Vrc) and making S1=S2. Then using the Vtc and Atc to capture the volume in front of the drivers, instead of using the Ap and Lpt I kept in the pic.?

Fidstang,
I added a throat chamber along with all of the Hornresp designations so you could see how they apply to the Super Planar tops ..

Click the image to open in full size.

Of course that throat chamber and duct section could be formed in many different ways , this was just an easy and quick way for me to demonstrate it by making the simple modification to one of our current Super Planar tops sketches


This cabinet with the throat chamber simulates just fine, performance in this model doesn't seem to be altered very much (when compared to a cabinet without throat chamber, same tuning, same internal volume and drivers) .....

No air particle velocity issues here because the duct is added near the very low velocity end of the QW resonator where there is mostly pressure but not much air particle velocity within the passband. This constriction could act as a choke to filter the much higher frequencies up in the range where the sound being emanated by the front of the cones should already be dominant anyhow .......... Due to the LPF effect i suppose It may be possible that this modification has the potential to clean up or flatten the mid or upper response at least a little bit in real world operation ... It is worth a shot ... It shouldn't hurt to build them this way if someone really wanted to .. .

Last edited by Matthew Morgan J; 30th December 2017 at 03:19 PM.
  Reply With Quote
Old 31st December 2017, 07:58 AM   #697
gkh is offline gkh  Austria
diyAudio Member
 
gkh's Avatar
 
Join Date: Sep 2016
Location: Vienna Austria
This new woofer may be interesting...
  Reply With Quote
Old 31st December 2017, 11:33 AM   #698
Matthew Morgan J is offline Matthew Morgan J  United States
diyAudio Member
 
Matthew Morgan J's Avatar
 
Join Date: May 2011
Location: Arizona
Thumbs down What is Tymphany thinking?

Quote:
Originally Posted by gkh View Post
This new woofer may be interesting...
Some guys were talking about this one on Facebook the other day ...

Sorry GKH, but i have to share my critique of this thing .... I just can't resist...

Well .... It is interesting for sure just because it is unusual and strange, and i do like "strange" sometimes so don't get me wrong BUT over 500 grams of moving mass on that 15" driver, high inductance yet mediocre motor force, and not nearly enough linear Xmax to keep up with it's extreme power handling ....

Just what were they trying to accomplish with this?

Unless i am missing something about this driver it doesn't seem particularly useful or cost effective ....Maybe they made a mistake on their data sheet?......

It seems that the folks at Tymphany were determined to make something really incredible and it just didn't work out, as if the designers went on strike halfway through the process ......Bob from the HR department and good ole "Cheeky" Karen from Accounting had to finish the design work on this one ..... We ended up with this overpriced mudmotor ...

Last edited by Matthew Morgan J; 31st December 2017 at 11:36 AM.
  Reply With Quote
Old 31st December 2017, 11:35 AM   #699
gkh is offline gkh  Austria
diyAudio Member
 
gkh's Avatar
 
Join Date: Sep 2016
Location: Vienna Austria
The 500+ grams MUST be a typo...
  Reply With Quote
Old 31st December 2017, 12:04 PM   #700
Matthew Morgan J is offline Matthew Morgan J  United States
diyAudio Member
 
Matthew Morgan J's Avatar
 
Join Date: May 2011
Location: Arizona
I really hope so ..
  Reply With Quote

Reply


Compound loading 6th order quarterwave "Super Planar" horns and pipes concepts/buildsHide 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
Can you use 2x 4th order BP boxes to imitate a 6th order BP ? RobWells Subwoofers 26 9th March 2012 08:33 PM
Compound horns, anyone? brsanko Full Range 30 15th August 2011 02:15 AM
6th order bandpass question tinitus Subwoofers 13 8th March 2009 06:01 PM
6th order bandpass Chris8sirhC Subwoofers 1 13th September 2008 07:09 PM
6th-order Bandpass BAM Subwoofers 1 24th September 2001 05:51 PM


New To Site? Need Help?

All times are GMT. The time now is 04:21 PM.


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