Resolving resonance in tall full range tower?

[GM]

When driver/vent is 'clustered' in a long line, there's a [sometimes obviously audible] secondary notch in the mid-bass, which yours shows, though with the plot scale seems benign, but may not be in reality once all ' buttoned up' in-room, not to mention a lower/'stronger' floor, floor 'bounce' reflection, so for technically smoothest overall response; drivers, vents need to be at an odd harmonic, with the latter typically at 4/5 or lower and at the bottom [fundamental] if the driver is near/at the top for max vent pipe damping with the most 'ripple' as the trade-off.

GM

 

[BenadrylCabbagepatch]

I am curious, do the dimensions of cabinet enclosures lead to such peaking responses as well? (with the assumption that the base of a small tower enclosure is usually a square or a rectangle with not much difference in its sides)

 

[norman bates]

I wonder if you would see a peak in the response if you had a line array of drivers ?

If I remember the kuze array (32 x 2" drivers in a tall pvc pipe), there was no peak.


Either way, great job and very informative !!!!!!!!!!!!!!!

 

[GM]

I am curious, do the dimensions of cabinet enclosures lead to such peaking responses as well?

Yes, with the large cabs of yesteryear I've typically built they are quite audible and why acoustic fiberglass was used to damp them.

Shape only becomes an issue when its [1/2 WL] eigenmodes are in the cab's BW, so in theory a big deal for an 'FR' driver alignment, but acoustic energy falls at 1/f with increasing frequency, so not in reality unless the cab's large enough to generate them down in the < ~350-500 Hz [depending on who you ask] bandwidth [BW] since it doesn't take much to damp them below audibility.

GM

 

[GM]

I wonder if you would see a peak in the response if you had a line array of drivers ?

No, the line 'feels' a single high aspect ratio driver in the long plane, so the width, depth would need to be quite large to 'overpower' it, so to speak.

GM