BLH example with Hornresp in pictures

[dhenryp]

I'm writing this to walk you through a simple Back Loaded Horn example using Hornresp. It uses a Fostex FE126E and is a simple two segment horn. The end result is very similar to my Bugelhorn:

Bigger Frugel horn (Bugelhorn?)

First: Read the wicki. It's good and getting better:

http://www.diyaudio.com/wiki/index.p...=Hornresp+Help

Next: Download Hornresp and started it up. You will start with some uneditable default parameters. Follow the steps in the picture.

[dhenryp]

Then follow the steps in this picture.

[dhenryp]

Next define the horn expansion as two stacked conical (i.e. straight sided) segments.

[rjbond3rd]

Sweet Lord, my prayers have been answered. Thank you, thank you, thank you! This is my new home page.

[dhenryp]

The enter the Fostex FE126E Theil Small Parameters from the data sheet. One note on CMS: There is a typo in the CMS values given by Fostex for every driver. It is 1000 times too small. The picture shows the correct value.

[dhenryp]

Then zero out some entries because this is a BLH. See the Wicki for an explanation.

[dhenryp]

Then enter the CC volume and select "Calculate".

[dhenryp]

Here is what the SPL response window should look like. This represents the response t he mouth of the horn.

Lastly: Thanks David for writing such a great tool! "David who?" you ask? YOU didn't read the Wicki!

[rcdaniel]

To a BLH (actually, loudspeaker!) novice, this seems very helpful. Nice.

Cheers
Raymond

[dhenryp]

Note: When you "Capture Current Results" you don't just capture one screen but the whole series of "signal screens".