Hornresp for Dum... hmm... Everyone ;)

[soho54]

Tapped Horns are best though of as an extension of the OD Horn.

The key differences are that there is no Rear Chamber, and the second side of the driver taps into the horn as well. If you have made it this far reading straight through, there is nothing really more to add, as you should have no problems with the inputs. The Loudspeaker Wizard can be used with a TH setting.

Design parameters are out of the scope of this thread, but simply remember the length of the horn determines how low it will go, and the distance from the Rear Tap to the Throat is what fills in the dips, not the Rear Tap to Mouth distance.

If you are flush mounting the driver you do not need the Vtc/Atc & Ap1/Lpt parameters.
If you are mounting the driver to the rear of the baffle/horn wall you will need at least the Vtc/Atc added.

[soho54]

A Rear Loaded Horn is simply a Normal horn with no Rear Chamber. Really that is all it is. Instead of a Rear Chamber the driver is mounted externally, and you get the sum of the horn and drivers response.

To build one you do the exact same things as the Normal Horn builds (Simple or Advanced,) and just leave the Rear Chamber off. You must then use the Combined Response Graph to get the true FR.

Note: Here I am using the cheat to allow the use of a single segment horn in the Loudspeaker Wizard.

[soho54]

A Compound Horn is an enclosure with horn loading on each side of a driver. It is selected by changing the Default Nd to CH.

When you select this option there are several changes to the program. First S1-S4 the first three segments are set aside for the main horn, but you may us as little as one segment. You are also allowed a Throat Chamber for it Vtc & Atc, and a Throat Adapter for it Ap1 & Lpt.

The second horn is given the last segment S4-S5, and the Rear Chamber (Vrc & Lrc) becomes it's Throat Chamber.

The loudspeaker Wizard is not allowed with this alignment. You must also use the Combined Response graph with this setup, and the default graph only shows the main horn output.

This is a pic that will allow you to get the feel for it, and identify the component locations with the schematic. The demo horn is not a good design by any means. It's only purpose is to make the areas standout.

[soho54]

There is a lot to tuning a Bandpass enclosure, so I am not going to get into that right now. I will just show how to set them up. They just build upon what you have already learned in the sealed, and two vented lessons.

I want to stress that these are not super tweaked example. They are just good enough to get the idea across.

Here is a 4th Order Single Reflex BP. It has one sealed chamber, and one vented chamber.





Here is a 6th Order Dual Reflex BP. It has a vented chamber on each side of the driver.



You could also do the Dual Reflex BP as a Compound Horn.

Using the TH setting you can do a Quasi-6th Order Series-Tuned BP as well.
or

[soho54]

IB setups are pretty easy to do.

If it is to be flush mounted just sim a sealed enclosure at least 10x the combined drivers Vas. This time we will use two drivers.



To do a manifold build, use an OD setting. Create a sealed rear chamber that is at least 10x the combined drivers Vas. The manifold opening needs to be at least as much as the combined Sd of the drivers. The driver is ~32cm wide, so will will make the manifold this deep, and split the depth between L12 & L23.

[soho54]

I'm going to fill the rest in over the next few days, so it should all be here before the 29th.

That's Nov 2010.

[radman12]

thanks a million soho!

[GranteedEV]

Sweet! Thanks! Horn resp looks like a very powerful program

[Oklahoma Wolf]

As always, nice work thus far Soho

GranteedEV wrote:

Horn resp looks like a very powerful program

It is indeed - I can't remember the last time I even touched Bassbox Pro, WinISD, or Unibox.

[soho54]

OK, I have everything pretty much in place now.

Some of the sections seem a little slim, but the idea is to show how to use the program, and not how to do a perfect example of each alignment. I feel it may get a little overwhelming if it is added here. I also didn't want to keep going over the basics in every post. I wanted it to kind of build up as you went along.

Tell me what you guys think. What should be added, expanded upon, or removed? I'm walking the fine line between not enough and too much information.