[#item_full_content]LITTLE ROCK, Ark.–(BUSINESS WIRE)–Catalyst Acoustics Group, Inc. (“Catalyst Acoustics Group” or “CAG”), a portfolio company of The Stephens Group, LLC (“Stephens Group”) and a platform for an elite group of acoustic, seismic, vibration and noise control companies that together offer the broadest portfolio of noise control solutions in the market, announced today that it finalized its acquisition of the assets of Madrid, Inc., a California-based leader in wood products for architectural ceilin