Speakers: Dispersion vs Directionality?

  • Thread starter Thread starter cephus
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ggunn said:
Hi, Harvey. So, in light of all that, what is your take on the Weber Beam Blockers? I bought one for my Deluxe, just because 18 bucks wasn't too dear, but since there was an hour or so between listening without it and with it, a good A/B wasn't possible. I do know that I don't get as many complaints from my bandmates on the other side of my rehearsal space.
I don't think it does much spreading, but it probably does a good job of knocking down the high frequency beaming.
 
Harvey Gerst said:
I don't think it does much spreading, but it probably does a good job of knocking down the high frequency beaming.

That's how it seemed to me. Thanks.
 
TravisinFlorida said:
That's all I get? :p I've been thinking about that since you mentioned it months ago.
The problem is that this is a pretty new way of thinking about monitors (and the room they're in). It's not gonna be just another "near field monitor"; it's gonna be a "system" that can expand (and contract) as needed for different tasks.

There are some possible "patents" involved, and companies move slowly when they are faced with the possibility of spending a lot of money on a very new idea.

Most of the new monitors on the scene are playing "catch up", or "me, too"; my monitor system is gonna play "leapfrog".
 
Check out some photos of sSRV's rig, look for duct tape. Believe it or not I will sometimes place a pillow in front of an amp to soak up some high freq while still allowing the amp to do its thing. Low tech!! Harvey, awesome post as usual. The stick analogy rules. Does anyone remember Stanley Clarke's bass rig with the hemispherical tweeter array? Talk about freaky.
 
Harvey

While that was a great bit of education (as usual), what practical application should we derive from that to apply to cephus' original dilemma?
 
notCardio said:
While that was a great bit of education (as usual), what practical application should we derive from that to apply to cephus' original dilemma?

If he wants to fill a room evenly with his guitar sound, he should mic his amp through the PA.
 
notCardio said:
While that was a great bit of education (as usual), what practical application should we derive from that to apply to cephus' original dilemma?
The fact that there ain't a lot of "free lunches" goin' 'round, when it comes to speaker dispersion.

One very 'counter-intuitive' solution would be to get the speaker up a little higher and point it at the back wall of the stage; yeah, turn it around and aim it backwards. If the "beam" is spreading out with distance, bouncing the sound off the wall will diffuse and widen the beam a little more.

Some of the other possible solutions are more speakers, or using a vertical column speaker. A vertical column has a greater horizontal dispersion.
 
Harvey Gerst said:
Some of the other possible solutions are more speakers, or using a vertical column speaker. A vertical column has a greater horizontal dispersion.
Gotta get that vertical cab towards the front of the stage, though, or the dispersion will get blocked by everything in front of it.
 
Harvey Gerst said:
Some of the other possible solutions are more speakers, or using a vertical column speaker. A vertical column has a greater horizontal dispersion.


Like the Dead's old "Wall of Sound" PA.
 
Harvey Gerst said:
A vertical column has a greater horizontal dispersion.

Why?



I think that it's part of the wider dispersion inherent to the smaller drivers in vertical arrays. (N.B. my opinion is pretty much only based on internet hearsay and some experience with bass cabs)

Also, someone misunderstood your earlier long post to take it that bass response is directly proportional to the surface area of cone. It's much more complicated than that, right?
 
Obi-Wan zenabI said:
It gets a little complicated, but basically, sound is pretty stupid - it doesn't really know where it's coming from, or where it's going. If the sound source is mostly vertical, it behaves like a big vertical slot and the sound spreads out from that slot, up to the point where the sound is a 1/2 wavelength of the slot width - at which point it starts to beam again.
Obi-Wan zenabI said:
Also, someone misunderstood your earlier long post to take it that bass response is directly proportional to the surface area of cone. It's much more complicated than that, right?
Yeah, there's a lot more to it than just cone area. It's all about trade offs and moving a lot of air.
 
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