DIY Lightweight 5-meter tall Delay Tower PA System

[diyuser2010]

The pole deflects under load but shows no signs of instability, cracking, or uncontrolled oscillation.

Carbon fiber is fine, until it isn't. It doesn't undergo plastic deformation under load before failure like metals experience. CF might be OK for a horn.

Using only half the original 24′ carbon pole, the system benefits from a significantly higher load margin — likely 3–5× the nominal safety factor, since we're working within the thickest and strongest sections of the pole. The moment arm is shorter, and the flexural stiffness higher, reducing the risk of dynamic failure.

Likely 3-5 times isn't a statement you are capable of defending if you ever end up in court.

 

[Freedom666]

maybe a round and angled piezo array down to 1.8khz, like with this one would be lightweight enough and help the dispersion of highs and mids.