Speakerplans.com Homepage
Forum Home Forum Home > Plans > New Projects Forum
  New Posts New Posts RSS Feed - Planar Wave horn
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Planar Wave horn

 Post Reply Post Reply Page  123 22>
Author
Message
Mircea Bartic View Drop Down
Old Croc
Old Croc
Avatar

Joined: 18 February 2005
Location: Romania
Status: Offline
Points: 2581
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Topic: Planar Wave horn
    Posted: 12 March 2006 at 4:57am
It looks like I'll have some new toys for a few days

I have a custom order for some really powerfull subs

Planar wave horn plan


the sub used will be Selenium 18SW1P
http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7& Partnumber=264-438&ctab=10


Edited by Nexus_3 - 01 April 2006 at 3:01pm
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research

Ex Nexus_3
Back to Top
Mircea Bartic View Drop Down
Old Croc
Old Croc
Avatar

Joined: 18 February 2005
Location: Romania
Status: Offline
Points: 2581
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2006 at 4:58am
I'll post some pics as I'll build them next week
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research

Ex Nexus_3
Back to Top
tb_mike View Drop Down
Old Croc
Old Croc


Joined: 01 October 2004
Location: New Zealand
Status: Offline
Points: 2744
Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2006 at 5:25am
Planar horn bass reflex?

18" on BR,decent anyway.
Back to Top
Mircea Bartic View Drop Down
Old Croc
Old Croc
Avatar

Joined: 18 February 2005
Location: Romania
Status: Offline
Points: 2581
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2006 at 5:40am
it's a design derived from dynacord Planar wave horn subs

the port ending outside the waveguide helps achieve better subbass reproduction

horn coupling is not necesary
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research

Ex Nexus_3
Back to Top
tb_mike View Drop Down
Old Croc
Old Croc


Joined: 01 October 2004
Location: New Zealand
Status: Offline
Points: 2744
Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2006 at 8:58pm
Ah yes i remember that sub now. When you do make some,could you measure its impedence vs frequency etc? Im interested in how that short tunnel helps it at all.
Back to Top
freddyi View Drop Down
Registered User
Registered User


Joined: 22 September 2004
Status: Offline
Points: 936
Post Options Post Options   Thanks (0) Thanks(0)   Quote freddyi Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2006 at 2:28pm
COOL horn expansion rate  - PV Low Rider (if meet spec) look like a drop-in substitute for US cheapass.  Are PV Low Rider 18 OK?  -- I've 1808 and they are way off specification so are now "open baffle woofer"


Back to Top
Mircea Bartic View Drop Down
Old Croc
Old Croc
Avatar

Joined: 18 February 2005
Location: Romania
Status: Offline
Points: 2581
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2006 at 2:54pm
one way of testing if other speakers work in the design is this one:

because there is no speaker simulation program capable to polt this design we have to work around that.

1. plot this speaker in bass box as a simple bassreflex box (no horn)
2. load another driver in that enclosure and try to reach the same plot
3. when you have identical plots then it should work ok in the planar horn.

modifications to the reflex ports will be necesary

I know that P-audio c18-650EL works in this design , but you have to shorten the ports by 110 milimeters


Edited by Nexus_3 - 13 March 2006 at 2:56pm
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research

Ex Nexus_3
Back to Top
tb_mike View Drop Down
Old Croc
Old Croc


Joined: 01 October 2004
Location: New Zealand
Status: Offline
Points: 2744
Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2006 at 7:19pm
Originally posted by freddyi freddyi wrote:

COOL horn expansion rate  - PV Low
Rider (if meet spec) look like a drop-in substitute for US
cheapass.  Are PV Low Rider 18 OK?  -- I've 1808 and they are
way off specification so are now "open baffle woofer"




Freddy - Easier to make a K?
Whatabout d&B B2 patent? I want to try it,measure impedence etc,even if it just makes a nice 45hz !
Back to Top
djstefanos View Drop Down
Old Croc
Old Croc


Joined: 18 November 2005
Status: Offline
Points: 2355
Post Options Post Options   Thanks (0) Thanks(0)   Quote djstefanos Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2006 at 10:28pm

does anyone know where i can get the full plan of the sub above? Those are really easy to make. Just move the baffle half way....

I have heard those (dynacords) in stacks of 6 per side during an outdoor concert in a square. Rattled my glass of wine in the bar i was in.



Edited by djstefanos - 13 March 2006 at 10:34pm
Back to Top
james folkes View Drop Down
Old Croc
Old Croc


Joined: 08 January 2005
Location: United Kingdom
Status: Offline
Points: 3064
Post Options Post Options   Thanks (0) Thanks(0)   Quote james folkes Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2006 at 5:44am
probably a silly question, but i'm assuming to load the driver you shimmy it
past the mouth brace and then climb half in side the cab to bolt it in?
pictures would indeed be nice, plots would be nicer.

james.
mardy hippy.
Back to Top
Mark James View Drop Down
Old Croc
Old Croc
Avatar

Joined: 15 January 2006
Location: rig side
Status: Offline
Points: 5309
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark James Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2006 at 8:14am
are they actualy that simple/good? im interested in finding out more!
Back to Top
Peter Moller View Drop Down
Old Croc
Old Croc
Avatar

Joined: 26 December 2005
Location: Denmark
Status: Offline
Points: 2531
Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Moller Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2006 at 5:11pm

Originally posted by Nexus_3 Nexus_3 wrote:

It looks like I'll have some new toys for a few days

I have a custom order for some really powerfull subs




the sub used will be Selenium 18SW1P
http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7& Partnumber=264-438&ctab=10

 

2 questions:

Can you explain the hornloading part of this box?.. In other words: How do I do the math to design that horn?... Are we talking Helmholz resonators or ?

Why does the handles on your drawing say "Cobra PWH" :-)... Did you measure a PWH sub or are you just using the outside dimensions and retuning it to suit the Selenium driver?

/peter

Back to Top
 Post Reply Post Reply Page  123 22>

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.094 seconds.