15'' 1850s plans?
Printed From: Speakerplans.com
Category: Plans
Forum Name: 1850 and 186 horns
Forum Description: Discussion / Questions about the 1850 and 186 horns
URL: https://forum.speakerplans.com/forum_posts.asp?TID=46007
Printed Date: 23 April 2024 at 12:48pm
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: 15'' 1850s plans?
Posted By: korsager
Subject: 15'' 1850s plans?
Date Posted: 04 December 2010 at 5:02am
| Does anyone have the plans for the 1850s horns with a 15'' bass? |
Replies:
Posted By: luke_0301
Date Posted: 04 December 2010 at 7:09am
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think it been done before,but doesnt work that well
------------- more bass please |
Posted By: Ohmen Sounds
Date Posted: 04 December 2010 at 11:44am
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you are better offf just building the 1850 the way it should be, theyre worth the time, i dont really see other reason for wanting a 15" version other than needing a smaller cab, if that what your looking for you might aswell go for a different more compact design. ------------- PENG PENG WOOSH WOOSH |
Posted By: djyves
Date Posted: 04 December 2010 at 11:51am
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I once saw a sp member that made the 1850 plan suitable for a 15'' driver. His name was Swesound then, I thought he changed it to Lhudjager. ------------- "If brute force doesn't work, you're just not using enough!" |
Posted By: Dref
Date Posted: 04 December 2010 at 12:07pm
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The PD1550 simulates almost identical to the PD1850 in the 1850 horn. If you take the difference Re into account it is hard to tell the diffrence in the responseplot in Honresp (not exactly the right way to do i know, but interesting).  Black is 1550 at 3.0V and gray is 1850 at 2.83V. If the 1550 is given 2.83V it will be a little bit lower than the 1850. 4 x PD1550 in 1850 horns with 600watt each should give you 140db from 46hz and up.  The PD1850 would of course be better because it has higher power rating, lower power compression, more surface area and higher Xmax. And would therefore play louder and have a little bit more low end extension. |
Posted By: luke_0301
Date Posted: 04 December 2010 at 4:07pm
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im sure after 'swesound' tested it,he said it didnt work well ------------- more bass please |
Posted By: Dref
Date Posted: 04 December 2010 at 7:40pm
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The best idea would be to design a horn for the specific 15". If a horn is scaled down it will result in less performance. (Lower sensitivity, less low-end and probably a more peaky response.) |
Posted By: hmaudio
Date Posted: 05 December 2010 at 12:54am
 ------------- Nottingham based cab builder. https://www.facebook.com/HMAudio-154352667920145/?ref=bookmarks This account is used by 2 people. |
Posted By: djyves
Date Posted: 05 December 2010 at 9:07am
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He made it for the eminence kappa lf. It was the best simming driver in that cab. ------------- "If brute force doesn't work, you're just not using enough!" |
Posted By: LjudLahger
Date Posted: 22 January 2011 at 12:12am
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They still play nice! http://www.youtube.com/watch?v=1qAOfIJbGXE&hd=1 - http://www.youtube.com/watch?v=1qAOfIJbGXE&hd=1  |
Posted By: rich_gale
Date Posted: 22 January 2011 at 7:03am
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id sooner build some sl36 clones scaled for 15" drivers. more direct horn path. 18" version has similar size and performance to 1850 horn. once scaled to 15" you open up more kick horn opportunities in sl36 style cab when you realise that the 15" version doesnt drop as low as you'd hoped. ------------- REFLEX ALL THE WAY.... (however, im playing with horns again...) That ok Mister Valiant? :) |
Posted By: Big-G
Date Posted: 22 January 2011 at 10:43am
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Agreed, to my ears the sl36 was a better sounding cab anyway, it dropped lower and went higher without sounding honky. ------------- They know what is what but they don't know what is what they just strut what the  .
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Posted By: Matejic
Date Posted: 18 March 2011 at 6:02pm
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I want to built swesound cab and is it better to use RCF MB15N401 or PD1550 driver? tnx anyway
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Posted By: biotec
Date Posted: 18 March 2011 at 6:06pm
The 1550 without a doubt.
Th mb15n401 is not a proper bass driver. ------------- me so horny, me love you long throw. |
Matejic wrote:Posted By: LjudLahger
Date Posted: 08 July 2011 at 6:16pm
Even if 1550 driver is a fine one, this does not fit this "1550 horn" as good as Eminence Kappa 15LF. No one does. I have done sims on alot of highend drivers and no one give a nice curve like kappa15LF does....good lowend (50Hz) and punch in the 110-140Hz aria... You could go with the Kappa pro and you get more X-max and X-mech but lose 1-2dB in sensitivity. I like PD but not in this one...(from my hornresp sims;)
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Posted By: smoore
Date Posted: 21 July 2011 at 5:39pm
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http://www.speakerstore.nl/constructions/show/10 - What im in the process of building. Going to use kappa lf's in it too. Its only my 3rd cab build so not sure how it'l turn out, will post pics later
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Posted By: LjudLahger
Date Posted: 13 May 2013 at 11:19pm
| I have now tryed a driver with a higher bl of 22 and it sounded more "hifi", control and more below 60hz. It's a shame that they are so hard to build :-( |
Posted By: JR.junior
Date Posted: 14 May 2013 at 7:06am
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build scoop, much more output power. ------------- Support the scoop technology, larger mouth plays louder! |
Posted By: ovidias
Date Posted: 28 July 2014 at 7:33am
| can anyone post input data for Horn resp? |
Posted By: Keen
Date Posted: 28 July 2014 at 8:28am
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Approx (close enough) input data for plan on page 1. 2PI S1:300 S2:3200 L12:150 (exp) VRC:33 LRC:21 VTC:5000 ATC:200 Leave everything else as is, and put your driver info in.
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Posted By: LjudLahger
Date Posted: 28 July 2014 at 8:38am
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S1-453 S2-717 Con-35,4 S3-1220 Con-52,5 S4-1917,3 Con-22,8 S5-3187 Con-18,8 VRC-33 LRC-21 VTC-14000 ATC-1550
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Posted By: Keen
Date Posted: 28 July 2014 at 8:54am
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or yeah, see LjudLahger's data for simulations starting from the first fold. Personally I dont think that's as accurate (no offense intended LL). One thing with that data is ATC needs to be recalculated because the if you're taking the throat to be everthing up to the first fold then horn resp will calculate the orientation of the throat to be at right angles to the driver. won't make a difference to the response but. e: spell |
Posted By: DennisTheMeerkat
Date Posted: 23 September 2022 at 8:24pm
I know this is a old post, but I just wanted to add to the records that I have done this. I have downscaled the 1850 horns (I have the modified plans aswell if they are wanted) to 15 inch versions. I have built 2 cabinets, and got them loaded with Eminence Kappa Pro 15LFA drivers. They play surprisingly deep, and with these drivers they can play much deeper than they are specified for without any problems, aswell as handle some serious abuse. Indoors I have no problems playing them down to 30 ish hertz, and they sound great. I have 4 ordinary old bass reflex 15 inch cabinets, and the 1850 horns completely dominate in comparison to those. Outdoors, I find that they start dropping off around 40hz. But they get very loud, and sound really nice. Outdoors you don't have any use for anything below 40-50 ish hertz anyways, you won't be able to hear it or feel it really anyways. I have my crossover point around 100hz, and my high pass around 25, with a 12db/oct slope. They sound really good, so downscaling them works just fine. I had to do some slight modifications to the pressure chambers to allow fitment of these rather big drivers, but it was worth it. With these monsters in them, they perform absolutely incredible. I have never had any problems with these drivers bottoming out or running into overexcursion. very good suspension on these, makes a huge difference. There is also 18 inch versions of these drivers available, for those of you who want to build the fullsize.   
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