LRADs are targeted beams of sound, so you want to move perpendicular to the target area to get out of the range.

[riversedge]

Love the images---it helps to understand the message.




Ari
@arixanxim
·
9h
LRADs are targeted beams of sound, so you want to move perpendicular to the target area to get out of the range.

Moving forward or backward will not protect you, you need to move quickly to the left or right to get out of the targeted sound beam.

Link to tweet

?s=20

[mwmisses4289]

1. Context, please?

Is this a weapon our military and militarized leo agencies are deploying against American citizens? How does anyone know one is in use?

[sl8]

2. "Minnesota State Patrol uses long range acoustic device, first used by military, to disperse Maple Grove protesters"

https://www.cbsnews.com/minnesota/news/minnesota-state-patrol-long-range-acoustic-device/

Minnesota State Patrol uses long range acoustic device, first used by military, to disperse Maple Grove protesters

By Derek James
January 27, 2026 / 5:42 PM CST / CBS Minnesota

Dozens of protesters were detained Monday night after making a lot of noise outside a hotel where they believed the Border Patrol commander was staying.

Something troopers threatened to use to clear the crowd made a lot of ears perk up. It's called a "long range acoustic device," or LRAD.

Minnesota State Patrol troopers used a powerful sound system first used by the military in Maple Grove, Minnesota, to communicate and disperse noisy protesters.

"The LRAD is like a loudspeaker, but it focuses the sound in a narrow cone, so that if you're inside the cone, it's extremely loud," said retired Marine Colonel Mark Cancian, a senior adviser for the Center for Strategic and International Studies.

[...]

[Sanity Claws]

3. People have seen them in ICE /CBP vehicles in Minnesota

[mwmisses4289]

4. Thank you.

This a rhetorical question, but when and why did leos and the military start seeing u.s. citizens as the enemy?

[Happy Hoosier]

5. Firearm/aviation quality active hearing protection can help

I use active hearing protection intended for use around firearms and jet aircraft. And AR-15 will emit 160 dB or more.... as much as these LRAD devices, but in short, sharp bangs, of course. Jet engines in close proximity can emit 140 db over a longer period. GOOD hearing protection can protect aginst those sound levels at least long enough to get to safety. If the hearing pro is ACTIVE, then you get the benefit of pass-through sound so you can hear clearly what's going on aound you, but if the sound level peaks over the safety level, it'll cut off fast enough to protect you.

For the science nerds, the hearing pro referred to as "active" isn't really active... that is it does not produce a negative sound wave to cancel noise. Rather it relies on the passive protection of the earplug/muff/both for the protection, but at lower sound levels passes through sound so you can hear.

Worth using if you are trying to protect what hearing you have left, like me.