[texas booster]

Damping 120Db of sound is pretty awesome, and getting that type of performance for only 1.5 mill is quite a feat.

Some government contractors I know could design such a chamber for only $150 mill (plus an occasional cost overrun).

I wonder if there are any that dampen more than 120 Db?

[Tenacious 1]

120 db is certainly impressive. I would be curious to see test results across frequency.