Line array ?

[flatheadmurre]

I got a box of 3" fullrange speakers and now i´m a little curious about how to best use them.

A line array has always been out of range money wise.

The drivers are monacor SPX-30M.

Is it a good idea tro try them out in a fullrange line array ?

Someone with experience in line arrays can perhaps give some advice.

[flatheadmurre]

So off to the lumberyard for some chipboard.

Ceilingheight says 24 drivers no more.

Some kind of open baffle contraption coming up.

Don´t really know how to sim the effekt of close together drivers interfering will be about 4" cc.

Anyone more experienced please feel free to join.

[jerryo]

Hi,
have you searched for Line Arrays on the forum yet? There are a number of threads on the subject which will answer alot of questions that you might think of. It's well worth the effort of searching before getting down to specific questions.

Cheers

[oLjud]

I'm also thinking about building me a line array, but with Faital Pro 4" and not as many drivers (for starter). But I considering an sealed enclosure with a EQ-boost for the bottom-end, instead of OB since my space in the apartment are very limited.

I think Hornresp or lspCAD may be able to simulate a line array, not sure.

[graaf]

Originally Posted by flatheadmurre

I got a box of 3" fullrange speakers and now i´m a little curious about how to best use them.

A line array has always been out of range money wise.

The drivers are monacor SPX-30M.

Is it a good idea tro try them out in a fullrange line array ?

Someone with experience in line arrays can perhaps give some advice.

see:
200 x 2" drivers What to do?
and:
200 x 2" drivers What to do?

You do not need 100 drivers, the concept can be scaled down, see also:
200 x 2" drivers What to do?

[Boscoe]

Could you not just winisd to model the array? Otherwise if you wanted to see how the high end is affected due to the distance of the drivers away from each other I think akabak may only be you friend there.

[graaf]

Originally Posted by Boscoe

Could you not just winisd to model the array? Otherwise if you wanted to see how the high end is affected due to the distance of the drivers away from each other I think akabak may only be you friend there.

below is a simulation fo 10x10 of 2-inchers
looks like a real laser speaker the sweet spot is just around 25 cm @300cm distance
effectivity of such a array speaker is very high so there is plenty of headroom for in room equalization of the highs and bass

[graaf]

.

[oublie]

start by reading this white paper

http://www.audioroundtable.com/misc/nflawp.pdf

what distance will you be sitting from the speakers?
What height is your room?
What will you be using for bass and tweeters?
How may drivers have you got?

I've attached a graph of a line of 12 monacors wired 4parallel 3 series measured on axis at 2meters with 2.83v notice where the highs start to roll off around 1khz. Also note that the are usable down to about 100-150hz

[graaf]

Originally Posted by oublie

start by reading this white paper

http://www.audioroundtable.com/misc/nflawp.pdf

do not read this white paper, most of theorical problems it discusses are not practical problems

You can overcome the real practical problems with a bit of equalization
check out these:
Advantages* of the* IDS Technology
Parts Express DIY Project

Originally Posted by oublie

I've attached a graph of a line of 12 monacors wired 4parallel 3 series measured on axis at 2meters with 2.83v notice where the highs start to roll off around 1khz. Also note that the are usable down to about 100-150hz

yeah, basic assumption in case of such an array is that freq equalization is mandatory