RCF LF18N401 in 1850 or 186?
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=15758
Printed Date: 27 March 2026 at 11:09am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: RCF LF18N401 in 1850 or 186?
Posted By: noobsound
Subject: RCF LF18N401 in 1850 or 186?
Date Posted: 28 March 2008 at 6:51pm
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hi
This is my first post here aldough i am reading the forum werry often.
I have 2 of this drivers and i'm planing on purchasing another 2. the curent drivers i have are used in bass-reflex boxez with good results but now i am thinking of upgrading my sistem by adding 2 drivers and placing them in some horn boxez.
From my point of wiew the T/S of the driver will be ok for the 1850 as well as 1850 but i would like to ask u if u ever used this driver in this kind of enclosures.If u did plz tell me how they performed!
i have constructed one 186 sub and it sounds great but i am afraid not to ripp the cone of the speaker in long term use that's why i am asking for ur' opinion on this.
i will only put at moast 1 kw on each cab
a pick of my build( for tests only) that's why they look so rough
 http://i28.tinypic.com/25pgzz9.jpg - http://i28.tinypic.com/25pgzz9.jpg
ps: there is no way i can sell this speakers and buy 4 diferent drivers.
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Replies:
Posted By: Jake_Fielder
Date Posted: 01 April 2008 at 12:20pm
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Sorry no one has helped you so far....
Does anyone know about this?
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Posted By: Jake_Fielder
Date Posted: 01 April 2008 at 12:23pm
| Read this: http://www.speakerplans.com/forum/forum_posts.asp?TID=6304 - http://www.speakerplans.com/forum/forum_posts.asp?TID=6304 Its not great though |
Posted By: Jake_Fielder
Date Posted: 01 April 2008 at 12:27pm
There ya go!
http://www.speakerplans.com/forum/forum_posts.asp?TID=6462 - http://www.speakerplans.com/forum/forum_posts.asp?TID=6462
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Rog Mogale wrote:Posted By: Jake_Fielder
Date Posted: 01 April 2008 at 12:28pm
| But its not a good idea to mix 186 and 1850 horns..... |
Posted By: AdiRCF
Date Posted: 01 April 2008 at 5:28pm
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he will not mix 186 with 1850. he build a 186 simply for a test with P.Audio HP18 S. And now he wants to know if the rcf driver, n401, will work in 1850. mainly he's concerned that the cone will tear up. ------------- Sughi Bughi |
Posted By: noobsound
Date Posted: 01 April 2008 at 5:59pm
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great !! thanks a lot Jake.
I wana start a new sistem and i want the greater spl posible out of 4 x bass bins. That's why i have interest in 1850 or 186 horns.
On top of 2x1850's i am planing on using a stipe 2x12" waweguide design ( smt 212 ) with Paudio c12-300mb.
 i'm pretty excited how 4 horns will sound compared to my reflex cab in witch my 18" stands at this moment
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Posted By: Jake_Fielder
Date Posted: 01 April 2008 at 6:03pm
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Expect a louder, faster but harder sound from the 1850s, They should be a few decibels louder for the same input wattage.
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Posted By: mylesound
Date Posted: 01 April 2008 at 6:05pm
| Keep us updated im really intrested in the 1850 Horn too but as im in the us PD drivers are hard to get. |
Posted By: AdiRCF
Date Posted: 01 April 2008 at 6:21pm
if you didn't noticed by now, all the cabinets are made from cheapboard. Almoust all romanians do it cheapboard style   so please don't make fun of us. 
------------- Sughi Bughi |
Posted By: noobsound
Date Posted: 01 April 2008 at 6:25pm
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Mylesound look at this:D if u wanna see pictures of a test made in romania u can search this page.not in english but you can see them pics
some vids too
 http://www.youtube.com/watch?v=6ZB8-saDLrg - http://www.youtube.com/watch?v=6ZB8-saDLrg
http://www.youtube.com/watch?v=dkRMYg4XQkg&feature=user - http://www.youtube.com/watch?v=dkRMYg4XQkg&feature=user
i didn't participated at that test but AdiRCf did
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Posted By: noobsound
Date Posted: 01 April 2008 at 6:26pm
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sorry forgot to put the link to the forum
http://www.forum.poweraudio.ro/viewtopic.php?t=2956&start=0 - http://www.forum.poweraudio.ro/viewtopic.php?t=2956&start=0
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Posted By: mylesound
Date Posted: 01 April 2008 at 6:48pm
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i love that second vid
i have no clue whats going on in that fourum tho lol i see a RCF being reconed. so were thoes 1850's being powered by RCF? and what model. the vids do look sick |
Posted By: _radu
Date Posted: 01 April 2008 at 7:12pm
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The reconed is an SD18EL. It just died afther an extremly compressed musical signal. |
Posted By: mylesound
Date Posted: 01 April 2008 at 7:20pm
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Hmm really it looks more like an RCF. I guess im used to a different model or something i thought the magnet has some kind of cooling fins on it.
so then they must have modified the 1850. i believe rog said the sd 18 would work just wont fit. |
Posted By: noobsound
Date Posted: 01 April 2008 at 7:44pm
it does fit but it's a tight fit. Duuno if this could be a problem but there is not much space between the magnet and the botom pannel of the sealed chamber
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Posted By: mylesound
Date Posted: 01 April 2008 at 8:01pm
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wow extremely tight fit. careful for overheating thoes coils.
I think im going to try the RCF 18X400 and see what happens in the 1850 cab. 4 for now. just waiting to sell off my set of Gsubs first tho. |
Posted By: noobsound
Date Posted: 01 April 2008 at 8:44pm
| U have acces to rcf drivers in the US and don't have acces to PD? or paudio? |
Posted By: mylesound
Date Posted: 01 April 2008 at 9:03pm
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I have access to P audio SD 18 to be exact but not the sd 18el , i doubt the sd 18 will fit in the 1850.
And i have no way of getting PD speakers here either. |
Posted By: AdiRCF
Date Posted: 01 April 2008 at 10:48pm
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the two sd18el 1Kw rms each died after putting in 3 kw of music in the two of them. the clipmeters never backed down and then, from a berry dcx was giiven a gain of +12 db at 50 Hz. i saw the red lights turn bright on the dcx, and on the amplifier. this lasted about 10 minutes and then they died. this was a test to see how much the sd resists. @mylesound if you will trey the 18x400 from rcf in 1850 cabs, please put some reviews. i'm considering to buy two of the to use'em in bas reflex and in the future to use them in 1850. p.s. i'm one of the rare persons in the world to cut off a sd18el  ------------- Sughi Bughi |
Posted By: mylesound
Date Posted: 02 April 2008 at 4:21am
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Loll
well RCF is great in reflex as i tried the p300 in my Gsubs and it sounded great and @ 1000w took tools off my shelf. i need more SPL tho. just going to miss that DEEP bass 
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Posted By: Jake_Fielder
Date Posted: 02 April 2008 at 8:37am
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+12dB @ 50Hz!
What did you high pass them at?
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Posted By: AdiRCF
Date Posted: 02 April 2008 at 10:45am
at 40 hz with a 18 db slope i think. it wasn't me at the buttons but when i saw the moment in wich 12 db were added al 50 hz, my heart froze  . the sound was a bit muddy, hardlly noticeable but we were to excited to noticed that. remember, it was just a test done by the main dealer of paudio in romania to see if the sd18el could keep up with that abuse. at 1,5 kw music per driver, passed in 2 compressors, i think the signal became in to a sine wave . the horns were connected in paralel on a bridge amplifier and when the first driver faild at 1,5 Kw, on the second a quick impulse of 2 Kw ended him to. Mircea Bartic could confirm this. the test was really funny. but the burned sd18el is a real bad ass stincker. smells really nasty when burned, and i mean reaaaaaly ugly   ------------- Sughi Bughi |
Posted By: Jake_Fielder
Date Posted: 02 April 2008 at 10:58am
| Haha, i would have loved to have seen that! |
Posted By: mylesound
Date Posted: 02 April 2008 at 8:17pm
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Noob question, sorry might be common sence but,
using 6 1850s, 3 on each side of a stage, to get my tops up high enough i will have to put all 3 on their sides. i will not be able to couple the mouth's of the horn. will i get the same cut off rate as if it was stand alone? or will i be able to go alittle bit deeper? |
Posted By: noobsound
Date Posted: 02 April 2008 at 8:49pm
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yeah i guess it will go lower as iff u would use a single one.
u could try and stack 2 on theyr side as in the vid shown above and on top of them u could put the 3'th sub standing straight.. this way u will have the same hight.I saw scoops stacked like this i guess it would work for 1850 too
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Posted By: mylesound
Date Posted: 03 April 2008 at 5:20pm
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sorry my friends 50hz is just not low enough for me.
when im not doing live sound im dj'ing soca, dancehall, hiphop so im going to continue to look around at some other plans that can get me into the 40's pref 30's if possible. or might just scale up my Gsub stack |
Posted By: Jake_Fielder
Date Posted: 07 April 2008 at 8:40am
| The horn length for an 1850 is not long enough to support frequencys below about 45Hz, no matter how big the stack is, if you're after a horn that drops really low then its going to be big, and your going to need alot of them! maybe look into ported horns? check out my ported horn in the "new projects section" the horn covers down to 50ish and the port hopefully down to 33/34ish and (80x60x60cm) |
Posted By: Dj Maca Roots
Date Posted: 13 December 2008 at 6:34pm
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Its nice to see your photos any ways. Raspect! ------------- Can't Stop Jah Music |