Polar response & Speaker Orientation.

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
And an update on the orientation:

I couldn't experiment at the gig, but at home I have now done so.

Listening bears out what Chris and Art surmised: There is a small but significant difference.
In both orientations, the drop off as you move sideways is really good, but the drop off as you get farther away seems a bit ragged when they are sideways. (I guess floor reflections really are the biggest problem.)

I was really hoping I wouldn't hear it. Well, it's pretty minor, really, and I'm still deciding what to do, but now I have a good basis from which to make that decision.
 
Last edited:
Awesome Cableaddict, great to hear you are so pleased with the kf394's.
By all accounts, it is a great box in terms of power-to-weight, and excellent sound quality.
I think fits nicely in the group of ported-horn superboxes, trying to achieve those criteria....boxes such as TW Audio T24N, and the DIY PM90/60 on soundforums.

BTW, what subs are you running? I'll bet when you get the UX3600 dialed in where the subs are properly phase aligned, you're gonna get even more pleased :)

No surprise what Art and Chris were saying about rotation patterns panned out as said...both know their stuff well.
Art, especially for me in many exchanges involving some of my projects, has proven to be a source of tremendous real world experience along with technical savvy.
 
Simplest way to address issues of polar response is to remove the backs of your speaker boxes.

B.

Ben, no.
These are high-power PA speakers. Not only will they not benefit from removing the back panel, there's a chance of actually causing damage at the power levels in question - the 10" cones would be able to flap around without the cabinet holding them back, meaning mechanical damage becomes very likely.

Please think before handing out "advice" that has a chance of causing actual damage.

Chris
 
Ben, no...there's a chance of actually causing damage at the power levels in question - the 10" cones would be able to flap around without the cabinet holding them back, meaning mechanical damage becomes very likely.

Please think before handing out "advice" that has a chance of causing actual damage.

Chris

Chris -

You seem to be drastically limited in your grasp of what "ported" means in terms of "flap", back on or back off.

I might also suggest you "please think" and learn more about forum courtesy before rushing to post such a damning put-down.

But to return to the OP, thinking in terms of the characteristics of dipole acoustics is all I meant to convey, not some screwball notion of taking a saw to OP's cabinet, as should be self-evident to an educated reader. In so far as OP can work with acoustics rather than "dial in" electric fixes which seem to be first-to-mind for some other posters, so much the nicer.

B.
 
Last edited:
Chris -

You seem to be drastically limited in your grasp of what "ported" means in terms of "flap", back on or back off.

I might also suggest you "please think" and learn more about forum courtesy before rushing to post such a damning put-down.

But to return to the OP, thinking in terms of the characteristics of dipole acoustics is all I meant to convey, not some screwball notion of taking a saw to OP's cabinet, as should be self-evident to an educated reader. In so far as OP can work with acoustics rather than "dial in" electric fixes which seem to be first-to-mind for some other posters, so much the nicer.

B.

I think Chris's comments were spot on...

Dipole acoustics are completely irrelevant to this thread...that is what should be self-evident to the educated reader.....or poster.
 
Chris -

You seem to be drastically limited in your grasp of what "ported" means in terms of "flap", back on or back off.

Ben, professional speakers mandate professional processing to go with them. In the case of a ported box, a highpass filter is always applied to make sure the cones see minimal power below box tuning. This is especially important in this application, as a dropped mic (for example) can produce very-low-frequency signals at high levels.

You're encouraging a practice that would likely lead to the damage of someone else's property, and yet you're talking about forum courtesy..?

I don't want to come back to this thread in a couple of years with a newbie posting up that they've trashed a couple of 10" drivers because someone (you) said it'd be a good idea to take the back off the cabinet.

You have some interesting ideas sometimes, but taking the back off a high-power horn-loaded PA speaker isn't one of them.

Chris
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.