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Old 27th May 2011, 07:23 AM   #1941
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GM,
S1 aren´t Atc isn´the same. Atc is smaller. It probably doesn´t matter.

Last edited by revintage; 27th May 2011 at 07:25 AM.
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Old 27th May 2011, 09:01 AM   #1942
GM is online now GM  United States
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Correct, it only affects the > 500 Hz BW up where at least with the 416 the driver is starting to break-up. I hadn't thought about it, but with the AE's larger Sd, ergo increased Vtc which I didn't [re]calculate, it should start a little lower, but not enough to matter with a 500 Hz XO.

At a glance, for expo the AE wants a ~80 Hz horn for a ~flat response out to 500 Hz.........

GM
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Old 27th May 2011, 03:26 PM   #1943
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Thanks much GM. In inputing this data, I am thinking that these are NOT cut down A7 cabs.

S1 at 574, and I measured these at 774 sq cm
S2 at 7356 and I measured these at 3458 sq cm
Hyp at 87.29 and I measured these at 35.60 cm

I also can't figure out how to change from con or exp to hyp.
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Old 27th May 2011, 03:43 PM   #1944
Kolbrek is offline Kolbrek  Norway
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Quote:
Originally Posted by djn View Post
I also can't figure out how to change from con or exp to hyp.
While in the exp field, you can press 'h' for hyp, 't' for tractrix etc. This only works in the first segment, though, as multiple segments can only be used with conical/exponential/parabolic segments.

When you have a tractric horn, you can't access the lenght field, so then you just double click on the 'Tra' text label to get back to exp/con/par.

It is described at page 3 in the help file. The help file describes all features of Hornresp and is actually very helpful.

Bjørn
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Old 27th May 2011, 03:53 PM   #1945
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You're welcome!

Yeah, if the throat [not the driver cutout] isn't 8" x 16" with a 14" axial length to the front of the baffle, it's not an 825/828 horn. Don't know what the dims are for JBL's, etc. similar design cabs.

Regardless, you now know how to input, 'juggle' a stub horn design to suit.

You can either double click on L12 to scroll through the choices or type in 'e', 'h', etc. when the field is highlighted per page 3 of the HELP file.

GM
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Old 27th May 2011, 04:16 PM   #1946
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Thanks GM and Bjorn. I am starting to feel comfortable with this now.

I did find a set of Altec 828 plans and mine are the same dimentions as the 828. Maybe I am doing the maths incorrectly.

Yep, I was calculating incorrectly. So all is well. What this all tells me is that for what I am looking for (a bass horn from 100hz to 500hz) this will work well. Might have to do some phutzing around with the back volume, placement, EQ and the like, but it should work well.
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Old 28th May 2011, 07:00 PM   #1947
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Quote:
Originally Posted by David McBean View Post
Hi Jean-Michel,

That's a great idea - after several hours simulating on Hornresp, most users are probably ready for a cup of coffee :-).

I will add it to the wish list... :-).

Kind regards,

David
Hey David

Is it possible to simulate non axissymmetric horn like IWATA ?

Best regards

PM
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Old 29th May 2011, 08:40 AM   #1948
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Originally Posted by erevan92 View Post
Is it possible to simulate non axissymmetric horn like IWATA ?
Hi erevan92,

Hornresp cannot simulate Iwata horns.

Kind regards,

David
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Old 29th May 2011, 02:29 PM   #1949
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Here is the Polar Map for the short Altec horn. I never really looked at Polar Maps so I took some time this morning to figure it out. So, is this map saying that if I am on the 0 axis, the responce will be strongest from 150hz to 450hz? Then 3db down from that from 100hz to 600hz? I want to use these horns from 100hz to 500hz or so and they will be pointing right at me in my listening chair. So these look like a good fit....right?
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Old 29th May 2011, 06:34 PM   #1950
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For on axis, just look at the 0° FR plot and use it to compare to the color chart to see how to interpret it...........

GM
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