Problem: The acrylic booth didn't lower the SPL of the drums.

The keyboard player across the platform had to wear earplugs to prevent hearing damage.

Plexiglass or acrylic is not a sound absorber. Pastor Derron Calvin asked us to come up with a solution. That window to the left is the old baptismal. Pastor gave us permission to use that space.

We came up with a design that uses most of the sound panels of the old surround and add more sound absorbing material to the new booth.

We removed the wall under the window opening.

We built the platform to hold 1800 lbs of sand. The sand adds mass that absorbs the low end. We decoupled the new drum booth platform from the stage area with rubber feet. (see pic)

The structure of the walls is the same as the drum gobo design here:

On the front pony walls - 5/8" Quietrock on the outside, then 3.5" of Rockwool, then either speaker cloth material.

On the interior walls - From the inside, Carpet and/or sound panels, then  5/8" Quietrock, then Rockwool, and 5/8" quietrock on the outside.

The result was outstanding, the keyboard player threw his earplugs away. The volume of the stage has come down so much that the Kevin the keyboardist asked me to turn up the drums, LOL. The drummer is happy as well, he can hear whats happening on the platform and he has better sight lines. The overall volume level has gone down so the congregation is happier as well. We are only using 4 mics to mic the drums - kick, snare, stereo pair overheads.