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New Horn Project 23" Tractrix


Guest David H

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Guest David H

I decided to build a new horn to use with the Dayton 8" Full Range driver from Parts Express.

This is a 23 inch 200Hz Fc circular cross section Tractrix flair.

This is just a prototype, and a work in progress.

post-24405-13819802626162_thumb.jpg

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Guest David H

Here is a preliminary response plot, no crossover.

The green line is the dayton no crossover in the horn, the Yellow is the same driver in a ported enclosure with a contour network.

The graphs here an not overly accurate, just a quick measurement.

post-24405-13819802629182_thumb.jpg

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Guest David H

What is the efficiency?

If high enough this is an option for the K Horn?

Might be nice to cover 350 hz to 3500 hz with a K Horn bass bin.

These seem to do nicely from 300-7K+, then start to roll off.

It would be close, looks like the horn picked up 6db, and the driver is 96db. I am very surprised the horn picked up that much spl.

I dont have very accurate numbers yet, however I did compare this today to Johnny 5's Cornwalls, and these play a good bit louder than them.

Dave

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Reminds me of the Oris horns. It might be worthwhile to find a driver that can go near 20kHz so you can go two way. Ever since I went with a two way system I have never thought of making any changes. Keep the test results coming.

Very nice job on the horn!

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Guest David H

Reminds me of the Oris horns. It might be worthwhile to find a driver that can go near 20kHz so you can go two way. Ever since I went with a two way system I have never thought of making any changes. Keep the test results coming.

Very nice job on the horn!

Thanks Rudy.

The Dayton FR280 driver actually goes to 20k strong.

I need to take some accurate measurments.

Dave

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Guest David H

Trying to figure out what bass drivers to run.

Problem I am having is if I want lf response I get low spl, or a massive box.

What I am contemplating is a compound Isobarik using 2 pairs of 10 inch woofers per box.

I still have the issue of having a total efficiency of about 90db

post-24405-13819802943496_thumb.jpg

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