If you are not mixing with a sub...

[SouthSIDE Glen]

I'm not sure where I read this, but if I remember right (likely hood unknown ) the directionality of a sound wave is determined by the size of the room.

I think what they might have been talking about is reflectivity and amplification. Certain size and proportion rooms will tend to amplify certain frequencies and null out others, especially in the low end. Also sizs and shape can effect the angles of reflectivity for the more directional higher frequencies. You're right, Ethan would be The Man to turn to for that stuff.

But whether in an anechoic chamber, the great outdoors, or a reverb chamber, the sound waves themselves have inherant dispersion/directionality characteristics - through the air itself - based upon wavelength that is totally independant of the surroundings.

G.

 

[giraffe]

and a one that is not cold, is hardly a one at all!

i mean, i fill out the low end with a pair of 10" hi-fi speakers i got from a thrift store.

(lucky buy, a pair of mission 770's, good down to about 42hz)

50$

 

[CoolCat]

Southside,G the description of the cone size and trade off going to 8" is my understanding too.

if the cone gets bigger, it can't move as fast...so you pick up Bass/Lower freqs...but you lose the uppers...because a big guy can't move as fast as the little guy....thats why tweeters aren't 15"...and aren't known for good bass response. i think that was a refreshing mention you did, of the basics that gets overlooked.

the 6" drop off is around 100hz too, per my RTA data, attached jpg.
6" Jbl, 6" BW303 HR and the BW303 Factory chart...all 3 drop off around 100hz. (with port). This a reality, whether the specs say it or not in their anechoic chamber yeah maybe 40hz?

Subs....imo, 95% chance majority of home units and growing autos market have subs turned ON....and probably setup like sht for audio.
so i'd think you'd at least want to check your mixes with a rumbling hometheater sub.

but thats the Blue Sky area of expertise people miss,
acoustic suspension on the sub (which others have jumped on too now)...non ported subs for Audio....around the 100 to 60hz...to 20hz. tighter, cleaned up the rumbling crap in so many cheap sht subs that don't mean much with a movie.."any ol' sub will do!" mentality.....

but still in a small room its tuff, i could get stable on the sub below 80ish and it started oscillating like a rollercoaster.
in my room... with a Home theater woofy sub..intended for Home theater most likely...

still like the 6"/8" driver....
i think its a trade off too on the sub, to stable it out your not getting the entire range either....i got 60-80 stable...and had the volume near off?
if i turned up the voilume up the 30-50hz showed up but was so fhkd up, i didn't want that osciallting sht going on....even tho i couldn't hear it??? i couldn't hear it??

just saying the room has its effect, as everyone mentioned before.

again this was just my setup, YMMV.

if you have a computer, the rta stuff is an easy fun little "lab project" tho....
i think it helped do some fine tuning, nothing major.

alright too much Folgers...bzzzzzzzzzzzzzzzzzz