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New 15" Ported Horn |
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mhtplsh 
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Joined: 27 August 2007 Status: Offline Points: 112 |
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 Posted: 31 May 2009 at 3:48pm |
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ceharden, Can u tell why u prefer throat from between the middle and the edge of the driver. I got understood from other post that throat from the edge of the driver is preferable. |
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ceharden
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Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
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Posted: 31 May 2009 at 6:16pm |
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You have to guess where the effective throat is and I guessed there!
Also my impedance measurements suggest I guessed right! |
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jethrocker
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Joined: 07 June 2006 Location: Chiapas, Mexico Status: Offline Points: 1942 |
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Posted: 31 May 2009 at 11:11pm |
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Just thought I'd add the easiest way to do this is to double click on the 'FR' or 'Tal' input fields, they will change to 'Ap' (Port area) and 'Lpt' (Port length). |
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Nigey-C
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Joined: 06 February 2006 Location: Grimsby... FISH Status: Offline Points: 1342 |
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Posted: 12 June 2009 at 11:41am |
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it is a shame that you dont have any designs for this.... as i am looking for soemthing just like this to replace my twin 15" push/pull cabs... they are loaded with L15P-200-AK-8... and i have 12 on them... imagine the stack of them....
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ceharden
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Posted: 12 June 2009 at 8:23pm |
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It wouldn't take much work to recreate them. I can probably give you enough info.
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Nigey-C
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Joined: 06 February 2006 Location: Grimsby... FISH Status: Offline Points: 1342 |
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Posted: 12 June 2009 at 8:47pm |
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if you could give some rough measurements of where things should be that would be cool... even if its just a sketch with numbers and lines...
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Hugo Biermann
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Joined: 05 February 2005 Location: South Africa Status: Offline Points: 809 |
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Posted: 18 June 2009 at 12:02pm |
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Going on what I can figure out on the horn you sould get decent output with 18" drivers like XB's and similar for a chapish bass build... Its off the 15" topic though...
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www.aggressiveaudio.co.za
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ceharden
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Posted: 18 June 2009 at 6:13pm |
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Although the cab is physically big enough to fit an 18" driver, I tried simulating a few and it didn't look great. I'm sure you could do an 18" version (like the Martin WMX etc) but you'd be best starting from scratch.
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Bebel
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Joined: 07 February 2012 Status: Offline Points: 1 |
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Posted: 07 February 2012 at 7:22pm |
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Hi Does anyone have a detailed plan of this cab Thanks |
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ceharden
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Posted: 07 February 2012 at 7:25pm |
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Nope! The guys that bought them off me were after plans for ages but since they had the cabs and I didn't it was quite hard for me to draw them!
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Jackalous
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Joined: 04 March 2013 Location: Bristol Status: Offline Points: 100 |
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Posted: 04 March 2013 at 8:29pm |
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I'm quite interested in your design ceharden, so have had a go at recreating it in Sketchup (as accurately as I could from all the pics and info in this post). I'm planning on building a small rig for use at home, and have recently been given a few 15" drivers and have been looking for a vented horn design to put them in, as the drivers aren't the best and would have just got shredded in a sealed chamber design. Is there any other info you could give me about the design? Cheers |
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ceharden
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Posted: 04 March 2013 at 10:58pm |
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Drawing looks pretty accurate, even down to the fact that I'd used an offcut with a 45deg cut as one of the internal braces!
 Makes all the difference accoustically!That's going to be a reasonable starting point. You can do some simulations in Hornresp to see how it works with your drivers. I found best performance with my drivers was achieved with the cut-off of the horn part at about 60Hz and the port tuned to 40-45Hz. The rear chamber ends up at around 80L and the horn path is about 1-1.2m long. It was designed by educated guesswork and a bit of luck so I'm afraid ultimately that's what you'll have to rely on!!! |
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Jake_Fielder wrote: