18" Tapped horn idea's?

 

The S2 is approx 0.45xSd to lessen the stress on the driver, wich in turn perhaps allows for less powerfull drivers to be deployed (to sort of answer the driver question), this is also a way to compensate for the sligtly less stable cones of most 18" drivers (relative to their 15" ans 12" siblings).

 

Most of the main design balancing (genral folding style, ratios and main path expansion) are derived from the earlier THAM designs but with some differances, the path length had to kept shorter then the box dimensions would allow if using the traditional THAM folding, this gave raise to the more aggresive end expansion, wich also seemed to pan out pretty well in the simulations in the form of a wide range sensitivity boost, their intended use are in mutliples in larger systems, preferably as prevously mentioned, stacked in groups of four or more, simillar to that of FLH's.

 

This is not to say that they would not work well on their own, but all of this remains to be seen, in conclusion, I have no substantial claims or proof of their performace other then that given in the published simulation data.

It is tuned with a low compression ratio so does not give the driver a hard time. I will stick the parameters through Hornresp tomorrow which will give me a guide however how accurate the P.Audio figures are is anyone's guess.

Tony

I reckon the cheapest driver worth using is the Fane Colossus 18-1500. there's no point building a massive box and putting a budget driver in.

It will be OK with a HPF at 35hz

Tony