russ.c Posted November 27 Share Posted November 27 I've just picked up one of these. It can be stood with the front-facing port horizontal or vertical. I'm guessing how it's placed is just a matter of what sounds best for the environment I'm playing in? However I'm a nerd, and any science someone could throw my way would be appreciated. Quote Link to comment Share on other sites More sharing options...
Bill Fitzmaurice Posted November 27 Share Posted November 27 Port radiation is omnidirectional, so the orientation doesn't matter. Scientifically speaking the radiation angle of any source only shrinks to 180 degrees when the radiating plane is less than a wavelength in dimension. At 100 Hz a wavelength is 3.43 meters. Yes, that means the cone radiation is omnidirectional at 100 Hz as well. That's why you can hear the lows standing behind a cab. 4 Quote Link to comment Share on other sites More sharing options...
russ.c Posted November 27 Author Share Posted November 27 Much appreciated, thank you Bill. 1 Quote Link to comment Share on other sites More sharing options...
BassmanPaul Posted December 1 Share Posted December 1 @Bill Fitzmaurice Thank you for continually sharing your knowledge. It helps no end. Quote Link to comment Share on other sites More sharing options...
Bill Fitzmaurice Posted December 1 Share Posted December 1 (edited) Thanks, but I made an error. The radiation angle of any source only shrinks to 180 degrees when the radiating plane is a wavelength in dimension. Since with direct radiating speakers the radiating plane is the baffle it's called the baffle step frequency. When it's smaller than a wavelength the sound will wrap around the cab, eventually going to 360 degrees as you go lower. Edited December 2 by Bill Fitzmaurice 3 Quote Link to comment Share on other sites More sharing options...
Woodwind Posted December 5 Share Posted December 5 On 27/11/2024 at 16:19, russ.c said: I've just picked up one of these. It can be stood with the front-facing port horizontal or vertical. I'm guessing how it's placed is just a matter of what sounds best for the environment I'm playing in? However I'm a nerd, and any science someone could throw my way would be appreciated. I don't mind what orientation the port on that (nice looking) cab is, but having the Ashdown logo at 90° would absolutely do my head in 🤣 If I was flipping the cab landscape or portrait continuously for stage space etc etc I'd remount the Ashdown badge in a corner at 45° 1 Quote Link to comment Share on other sites More sharing options...
BassmanPaul Posted December 7 Share Posted December 7 LOL I think you'll find that such niceties get tiring after a while!! 2 Quote Link to comment Share on other sites More sharing options...
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