Sound of tapped horn subwoofer

[weltersys]

Originally Posted by DrDyna

Yeah, it's a little bizarre in here because of the way it's laid out, I only have 2 corners to wedge the subs into. The front door is in the back corner on one side and the entrance for the kitchen on the other. The listening area is along the long wall, but not in the center, because the couch would block the stairs going up if it was also in the center :P The room is approximately 4m by 6.5m.

And at 30 Hz, the difference between the width of a door to the corner and an opening in another corner makes what difference in corner loading ?

If it were my choice, I'd have the speakers on the 4m wall, unless some other household Feng Shui got in the way, because I hate longer (and non symmetrical) reflections coming from the side than behind, sounds "goofy" to me.

Art Welter

[DrDyna]

Originally Posted by weltersys

If it were my choice, I'd have the speakers on the 4m wall, unless some other household Feng Shui got in the way, because I hate longer (and non symmetrical) reflections coming from the side than behind, sounds "goofy" to me.

Art Welter

I thought about trying to do that, but along the short wall, I'd only have one corner on each side, the front door is on the short wall and so is the opening for the kitchen on the opposite side.

I guess it is kinda a feng shui thing. Every time I have a few drinks I threaten that someday I'm going to make the 5m x 6m addition of my dreams with only one door at the halfway point of the rear wall :P

[revboden]

fyi: 1 meter difference away is = to ~3 ms of delay at 68F


edit : to be exact, at 68F sound travels 1 meter in 2.915 ms. (as a general rule i just remember 1ft = 1ms).

edit ps, if you want to be really anal... from prosoundweb

(Using 15DegC as reference)
DegC Vel Dim DegK Ti/T15 ^.5 Product Table

-10 3.073 ms/m 263.15 1.095 1.046 3.073 3.073
- 5 3.044 ms/m 268.15 1.075 1.037 3.045 3.044
+0 3.017 ms/m 273.15 1.055 1.027 3.017 3.017
+5 2.99 ms/m 278.15 1.036 1.018 2.989 2.99
10 2.963 ms/m 283.15 1.018 1.009 2.963 2.963
15 2.937 ms/m 288.15 1.000 1.000 2.937 2.937
20 2.912 ms/m 293.15 0.983 0.991 2.912 2.912
25 2.888 ms/m 298.15 0.966 0.983 2.887 2.888
30 2.864 ms/m 303.15 0.951 0.975 2.863 2.864
35 2.841 ms/m 308.15 0.935 0.967 2.840 2.841
40 2.818 ms/m 313.15 0.920 0.959 2.817 2.818

[60ndown]

deja vous, every few weeks, for 20 years.

[bishopdante]

Originally Posted by weltersys

“Fast” is a subjective term, different cabinet designs using different drivers all have different phase and frequency response, characterizing an entire category of speakers is impossible, examples that sound “slow” can be found in any category of speaker design.

Although typically people measure for group delay for a measurement that's approximate to "responsiveness" or "fastness".

[chris661]

Originally Posted by bishopdante

Although typically people measure for group delay for a measurement that's approximate to "responsiveness" or "fastness".

Though the audibility of group delay is debatable.

Why, pray tell, have you revived a thread that's 18 months old?