Horn mouth termination

[Earl K]

- Here's a look at a repeat study that I ran today for the foam-lips ( above & below the existing metal edge / like Steve implemented ).

- One can see the deepening of the comb-filters that I previously mentioned .

- Red trace in background is the horn without any foam-lips . Purple trace is the same as the blueish white - just lower in level for easy of view .

- Sorry for the washed out colors & contrast / both ARTA & Powerpoint don't handle bmp-jpg exports very well ( IME ) .

>< cheers



ps; please let me know if this image opens for you, due to the fact that I'm hosting it over at LHF .

[Steve Mac]

- Here's a look at a repeat study that I ran today for the foam-lips ( above & below the existing metal edge / like Steve implemeted ).

- One can see the deepening of the comb-filters that I previously mentioned .

- Red trace in background is the horn without any foam-lips . Purple trace is the same as the blueish white - just lower in level for easy of view .

- Sorry for the lousy colors & contrast / both ARTA & Powerpoint don't handle jpg exports very well ( IME ) .

>< cheers



ps; please let me know if this image opens for you, due to the fact that I'm hosting it over at LHF .

Whoa, whoa, whoa....I see a 5 dB dip at 4 kHz...exactly what my ears were telling me and pretty close to where I had added a band pass filter adjustment at.... Okay, I'm leaving work early....stopping at a commercial hvac distributor I got some buddies at and start work on this extended lip work tonight. ...very interesting and thanks Earl!

[Panomaniac]

Thanks, the graph opens when you click on it.
From the looks of that, I'd say that the foam lips are worse!

Will have to see if I can dig up my measurements. Not as fancy as ARTA, but they did show more/better effect.