dual Kilomax 18A horn pics and olans

this is my first post on this board.  hope its in the right topic.  seems a lot of people here have said the kilomax 18 can't be used in a horn.  i have been using them im my designs for the last 6 -7 years with good luck. here are some pics.  if anyone wants the plans or info letme know and i will post

its hard to model in hornrep.  the attached pic is one box  open space 1w into 4 ohms at 1m.  The 65hz dip goes away when 3 or more boxes are coupled.  even though the kilomax doesn't have the strongest motor the horn loads it down to about 40hz.  the drivers don't reach Xmax anywhere in there operating range at 1000W rms.  this is partly because there is no rear chamber.   the sound is very good up to around 100-110hz.  bass notes and timbre are clearly defined without the hard sound of some boxes designed for high spl.  has to be used with strong midbass (kick boxes for UK guys) for most music.  i sometimes use them with dual 15 frontloads tops for the drum and bass partys.  BTW, i have never blown a kilomax 18 from over power.   i run 1 box a side with crest a 9001. 

 

for some reason i can't post a pic now.  will try later.

I like the way your design looks. How hard was it to build (once you got the first one sorted out)?

@logsquared: Those look wickeddddddddd m8!!! Nice design and build.Just needs more paint layers or a better paint finish now.

The design is nice but doesnt that design destroy those 18s in seconds, the pressure in that throat must be pretty extreme?

18s are a bit dubious for horn subs anyway from a cone strength POV let alone the poor specs of the kilomax range.

I like the idea of no rear chamber heh

Thats also a lot of weight and a pretty short horn path length for the size of driver by the looks of it. 105 or 106dB average is pretty good and the response is quite flat to 40Hz but I reckon you could get the same with a pair of 15s or 12s in a much smaller box

Ive seen kilomax used in horns and reflexes before and the 1000W is a bit of an overstatement, that massive heat sink aint for nothing! While it may take 1000W a sound engineer friend of mine did some tests and you dont really get any improvement over 500-600W, certainly not the 3dB you would expect to get, more like 0.5dB or 1dB

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Edited by Disco Stu - 18 February 2007 at 12:42pm

One question: they have no sealed rear chamber, but when you stack them in a line as per the picture, doesn't that seal up all of the driver access holes and give the cabs a rear chamber, albeit a bit leaky?