Would a pair of line arrays, layed down horizontally,
cause any problems I'm too dim to see yet?

Thanks for any thoughts,

there are two parts to the line array
the line and the array
without some mininum number of cabinets all you have is a box
the boxes interact to create the line array
a single element from the line array is not going to give the pattern
control or cylindrical wavefront of a line array
George

George Gleason wrote:

Would a pair of line arrays, layed down horizontally,
cause any problems I'm too dim to see yet?

Thanks for any thoughts,

there are two parts to the line array
the line and the array
without some mininum number of cabinets all you have is a box
the boxes interact to create the line array
a single element from the line array is not going to give the pattern
control or cylindrical wavefront of a line array

Add to that the proximity of stage floor mons and we wind up with a
****load of comb filtering from the proposed array of little cones.
Ouch. I tried a similar setup for a spekaer rig about 30 years ago and I
will never do _that_ again. g Good drivers, good plywood, and a plot
from the anechoic chamber that Kooky could have used for his comb.

--
hank alrich * secret mountain
audio recording * music production * sound reinforcement
"If laughter is the best medicine let's take a double dose"

Chris Hornbeck wrote:
tsjk

Would a pair of line arrays, layed down horizontally,
cause any problems I'm too dim to see yet?

tsjk

Absolutely !
A line array is meant to be installed vertically and then
it has a horizontal pattern !
So when you lay it down on the floor, it spreads from the ceiling
down "into" the floor ( from that, makes awfull reflections )
and when you move one step aside you get a horrible
sound suffering from comb-filtering effects. One step further
aside and all sound is gone.

Andre

Chris Hornbeck wrote:
Has anyone made (or even just thought about) some
homemade stage floor kicks?

I have thought about it, but building the cabinets does not look like fun.
I can do reasonable square cabinets, but there are a lot of mitres needed
to make good-looking floor monitors. If I could get someone else to do
custom cabinets for a decent price I'd consider it.

Saw a big (2000 seat) show last year that used what
looked like line arrays and I've been thinking about
them since.

So, any thoughts on drivers? Is there any reason
to use anything but midrange drivers, maybe 5 or 6
inch diameter?

Do you need a huge amount of power or not? I was going to build some boxes
with the 8" coaxials from Radian. Not much power handling, not much pattern
control, but they sound good and clean.

If you are using a line array of midrange drivers only, I would worry about
sounding too much like those awful PA columns in the seventies. You might
be able to do some pattern control just by sticking all-pass networks in the
line, though.

Would a pair of line arrays, layed down horizontally,
cause any problems I'm too dim to see yet?

I dunno, put some 8" full-range speakers in a cardboard box, tape it up, and
see what you can do to get a nice narrow pattern.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

In article 3f0d24ac$0$7591@heracles, root root@l1dotnl wrote:

Absolutely !
A line array is meant to be installed vertically and then
it has a horizontal pattern !

I think the idea here is to build a system with a vertical pattern,
so that it's hitting just one performer.

So when you lay it down on the floor, it spreads from the ceiling
down "into" the floor ( from that, makes awfull reflections )

Right, but it will make fewer reflections than a single monitor because
the pattern will be narrower. The question is what happens to the reflections
from the floor and that depends partly on whether someone has brought a carpet.

and when you move one step aside you get a horrible
sound suffering from comb-filtering effects. One step further
aside and all sound is gone.

The sound being gone on the side is a GOOD thing. The question is how bad
the comb filtering effects are. I can't answer that.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

How low do you require the pattern to maintain directivity?
getting tight control over 2kHz is not much of a problem but getting tight
control under 500Hz is a real problem for small boxes
EAW has some intresting product that uses destructive interference (run by
DSP) to give killer volume and directitivty control SM84 is the part #
George

George Gleason wrote:
How low do you require the pattern to maintain directivity?
getting tight control over 2kHz is not much of a problem but getting tight
control under 500Hz is a real problem for small boxes

Figure you need pattern control down to around 300 Hz or so. You can
lose most of the stuff below that most of the time.

EAW has some intresting product that uses destructive interference (run by
DSP) to give killer volume and directitivty control SM84 is the part #

That's the whole line array concept.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."