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my new 12" horn |
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bee 
Old Croc 
Joined: 14 June 2011 Location: Middlesex Status: Offline Points: 4549 |
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 Topic: my new 12" hornPosted: 19 September 2014 at 7:00pm |
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My new 12" horn still tweeking, what do you guys think so far.....
     1w @ 1m with 1/3rd octave smoothing, eq added to hf only... hf driver bms 4550 on faital horn, only used this for listening, not decided on final choice for hf.... green is 12" horn, yellow is hf, red is reading of both. high pass on the 12" set at 150hz xover to hf at 1260khz.  1w @ 1m no smoothing, just raw response plot of the 12" horn only..... the phase bung is still in bear wood as im still tweeking finished bung will be colour matched to horn....
Edited by bee - 19 September 2014 at 7:02pm |
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https://www.elements-audio.com
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DMorison
Old Croc
Joined: 14 March 2007 Location: Aberdeen Status: Offline Points: 1740 |
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Posted: 19 September 2014 at 7:29pm |
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Looking good, must've taken a lot of work getting to that point.
 Did you have to do much trial & error or were you able to get reasonably close straight from the drawing board?David.
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Shortrope
Young Croc 
Joined: 08 July 2013 Location: Ireland Status: Offline Points: 1232 |
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Posted: 19 September 2014 at 7:30pm |
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Oooo lovely!!
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My Tinnitus is coming along nicely!!
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KidCreole
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Joined: 06 November 2013 Location: London (East) Status: Offline Points: 3580 |
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Posted: 19 September 2014 at 7:35pm |
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Nice. Not to be negative but have you done horizontal dispersion tests yet?
It will look good on axis but from my experience you may have problems with horizontal dispersion |
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Mykey Wattco
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discosucks
Old Croc
Joined: 06 November 2009 Status: Offline Points: 1546 |
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Posted: 19 September 2014 at 9:45pm |
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nice!!
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smoore
Young Croc
Joined: 30 March 2011 Location: N.Devon Status: Offline Points: 966 |
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Posted: 19 September 2014 at 11:16pm |
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Ooooohwee thats pretty damn flat! Have you managed to do a test without the phase bung? And have you tried any other phase bungs? Or sticking with 'if it works don't fix it'
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smoore
Young Croc
Joined: 30 March 2011 Location: N.Devon Status: Offline Points: 966 |
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Posted: 19 September 2014 at 11:17pm |
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Also any chance of some pictures of the rear of the phase bung? And howr you going to fix it in place in a final design? Haha im full of questions sorry
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bee
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Joined: 14 June 2011 Location: Middlesex Status: Offline Points: 4549 |
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Posted: 19 September 2014 at 11:43pm |
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3 years to get to this point, it's a narrow dispersion cab, will need 2 per stack
I've taken off angle plots, but need to get them taken properly. |
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https://www.elements-audio.com
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Sound Chippy
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Joined: 14 August 2013 Location: Aus / Melbourne Status: Offline Points: 19 |
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Posted: 20 September 2014 at 12:32am |
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Ahhh, So nice to see some new projects on S.P. Inspiring stuff. As always great workmanship Bee. What 12" are you planing to use with the phase bung? And is that the XT1086 on the 4550? :)
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Keen
Young Croc
Joined: 30 May 2011 Location: Brisbane, Aus Status: Offline Points: 1271 |
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Posted: 20 September 2014 at 1:54am |
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Haven't read the thread yet but was recently wondering where this work was at. Can't wait to have a read bee
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bee
Old Croc
Joined: 14 June 2011 Location: Middlesex Status: Offline Points: 4549 |
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Posted: 20 September 2014 at 2:16am |
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The horn is the faital pro lth102, with a bms 4550 comp, this is not the chosen horn just one I had for testing, need to finish doing full polar plots to get correct angle needed for hf. The lth102 is there abouts correct... I'm planning on making my own hf horn.
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https://www.elements-audio.com
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bee
Old Croc
Joined: 14 June 2011 Location: Middlesex Status: Offline Points: 4549 |
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Posted: 20 September 2014 at 2:21am |
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At smoore yes the bung and cone were designed to work with the driver and horn. I first made the back bowl, then measured bowl with driver with of different baffle throat sizes, then once I was happy, made the back part to the phase bung. Once I was getting a rta reading I liked. I set about making the horn. Then the cone last . At this stage the horn bung and cone were finally shaved filled and tweaked till I was happy. Currently there is a dip around 148hz which is not there when measured with out bung. So I'm looking into what is causing it. It's only a dip of 3.2db but I want it right...
spelling... lol Edited by bee - 20 September 2014 at 1:19pm |
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