PE waveguides back in stock

[Dennis H]

I just noticed they are back, in sizes from 4.5" to 12", prices from $5-$14. At that price, I wouldn't mind doing some damping, throat fitting, etc. I can't say I would feel the same if I paid the high price of some of the other waveguides.

http://www.parts-express.com/wizards/searchResults.cfm?searchFilter=waveguide

Image not available

[ThomasW]

They're certainly cheap enough for experimentation purposes..

Now everyone can clone the lower cost Emerald Physics design..

[Dennis H]

In Paul W's tests, the 12" from MSC (discontinued but similar to the PE) had a lower cutoff frequency and better pattern control than the 10" DDS. The pattern control looks as good as Earl Geddes's posted graphs to my eye so it's definitely something you could work with.

https://www.htguide.com/forum/showthread.php?t=18242&page=4&pp=35

0 and 45 measurements:

[fjhuerta]

What size would you guys recommend?

[Dennis H]

The general idea with the Geddes systems seems to be the same size waveguide as the woofer to get balanced directivity. The catch is you need a pretty good pro woofer to cross that high -- at about a wavelength or a little higher. Geddes uses B&C drivers but the TD drivers from aespeakers look a bit better to me for crossing high.