"[3] The Studio is now used by Eddie's son Wolfgang Van Halen who used it on both Mammoth WVH albums and plans to continue using it in the future.
The recording room was roughly 600 square feet (56 m2), sound insulated with fiberglass and rubber, with a booth on the north end.
The construction on Van Halen's property was passed off to city inspectors as a racquetball court,[2] disregarding the soundproof walls with cinder blocks filled with concrete.
To prevent Van Halen picking up boxing fights and football games through his guitar wireless units, engineers wrapped a layer of grounded chicken-wire fencing around the studio, turning it into a Faraday cage.
Between February 1989 (after the OU812 Tour ended) and March 1990 (before starting work on For Unlawful Carnal Knowledge), Van Halen remodeled the studio, doubling its size, replacing the main mixing board, and at the end of the recording floor, adding an isolated drum room for his brother Alex.