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The Portland Theater Completes Upgrade with Yamaha/NEXO Audio System

FOH Staff • News • January 30, 2019

Portland Center Stage Theater

PORTLAND, OR – Alpha Sound equipped Portland Center Stage Theatre (PCS) with a Yamaha/NEXO audio system for  its main auditorium and building-wide paging system. The  auditorium has a NEXO M6 line array and LS18 subwoofer system with NEXO PS15R2 center speakers and NEXO ID24 speakers. A Yamaha QL5 console and two MTX5 matrix processors run on a Dante digital audio network with a variety of Dante-enabled peripherals.

More details from Yamaha (

“This last installation phase tackled the building-wide paging system,” states Devin Sheets, lead design and installation technician at Alpha Sound, which is based in Salem, OR. “PCS has two fully functional theater spaces, several rehearsal halls, many offices and workshops, and operates as an independent event venue, all simultaneously nearly 24/7. With eight input sources requiring constant reassignments by various personnel to over forty zones on four different floor levels depending on daily activity throughout the building, we chose the MRX7 matrix processor with three additional MTX5 units and a Tio16 stage rack to be distributed and connected via Dante. Customized iPad control with ProVisionaire Touch allows instant and intuitive patching and parameter changes to the more than 400 control options.”

Resident sound designer and A/V supervisor Casi Pacilio worked closely with the Alpha team. Pacilio has been awarded by PATA and Drammy, and has worked both on and off Broadway productions, touring internationally as well as serving PCS for the past 13 seasons. “Her in-depth knowledge and understanding of theater sound was a great asset during the installation process,” says Sheets. “It was a pleasure working with Casi and the theater, and we are very proud of this project.”

“The GEO M6 is deceptively loud and clear,” adds Sheets. “When we first installed the arrays, the guest engineer was worried about their small size and whether the rig would get loud enough for the rock musical they were doing. Upon hearing it for the first time, he could not stop smiling!”

Duane Sheets, president of Alpha Sound said that PCS was a fairly intense install, not so much because of the size but because of the high standard for audio quality at every point. “We would not have considered anything other than Yamaha and NEXO equipment for this application; they are the only brands that we can trust to deliver.”

Pacilio said she appreciates Alpha Sound for being very responsive to the theater’s needs and requests through the years. “The NEXO and Yamaha systems are absolutely incredible, and we have had extremely positive feedback from guest engineers.”

For more information on Alpha Sound, visit