Full (Fuller?) range horn

[Rich4349]

I realize that between HP and LP, as well as the folds reducing higher frequencies, that the tubas are designed to run <80-100 hz. BUT, if space were no problem (that's a mighty big but), how well would a straight horn work for accurately reproducing frequencies above 100? Maybe even down to a more reasonable 60 hz or so. Could a GOOD sounding horn be made from a single driver (such as one of the more hifi Fostexes, such as an FE206E:

http://www.madisound.com/pdf/fostexdrivers/FE206E.pdf ?

Also, what about a SLA, SLA center, or TLAH from these, without the tweets? Yes they are expensive, but I'm removing limiting factors here, at least individually.

[sine143]

well, when you look at the Omnitop, what do you see? a straight horn plus blistering sensitivity above 150 hz. I dont know enough about horns to tell you how a subwoofer would work above 100hz with a straight horn though.

[Bill Fitzmaurice]

Could a GOOD sounding horn be made from a single driver

No. Horns are low pass devices, the lower they go the less the extension is on the high end. That's why nobody does a full range straight horn. The DR horns actually work almost as well as a straight horn, so much so that the improvement from using a straight horn would be slight. About the best you can do with a single driver is a rear-loaded horn, which are commonly loaded with Fostex drivers. But they all suffer from a midbass dip, where the front and rear waves meet 180 degrees out of phase.