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EV ZX1i: Smart Sound at Loyola Marymount University

September 6th, 2006

LMU has smart classrooms all over campus; the first of these were installed in 1996, the latest in 2004. To bring them all up to the same performance level, and rather than continuing to service some of the more outmoded technology, LMU contracted Digital Networks Group, Inc., to replace most of the sound reinforcement equipment with new systems built around EV ZX1i loudspeakers and EV CPS2.6 amplifiers. Now 21 of these classrooms have a pair of ZX1i boxes, and an additional small lecture hall has four ZX1is.

The Digital Networks Group team, led by Stan Nice, approached the installation with an emphasis on minimal hardware and maximum performance. When it came to the loudspeakers, instead of specifying small wall-mounted loudspeakers requiring external EQ’ing to bring out more bass, DNG opted for the compact ZX1i, which has amazing full-bandwidth response built-in, with plenty of warm low-end. Zero tweaking was required to get the sound the school was looking for. Mounting the ZX1is was also headache-free: The EV Strong-Arm mounts made installation quick, and the boxes can be easily adjusted on the wall.

All the ZX1i units installed are powered by EV CPS2.6 amplifiers. Though the classrooms might require higher volume for occasional movie screenings, in general things need to be intelligible in the vocal range, with even coverage at lower SPLs. At around 30x45 feet each, each room only requires around 100 watts total output from the system for any given application. The CPS amps in each classroom are installed inside heavily ventilated lecterns. This posed a potential problem, as any fan noise would be heard throughout the room. However, as a Class-H amplifier, the fans in the CPS don’t run unless the amp is really pushed. Though the usual spec for an installation like this would be for a passively cooled amplifier, DNG didn’t want to step down to inferior sound quality. Having used CPS amps in the past, DNG could assure their client the CPS amps sounded great with plenty of headroom built in, and that amplifier fans wouldn’t work unless they really had to-a very cool feature, literally, that added to the stylishly streamlined, low-key/high performance approach to the installation.

###

Guy Low

Public Relations Producer

Telex Communications, Inc.

12000 Portland Ave. South

Burnsville, MN 55337

Phone: 952-736-3935

Fax: 952-736-4582

guy.low@us.telex.com

James Edlund

Public Relations Manager

Telex Communications, Inc.

12000 Portland Ave. South

Burnsville, MN 55337

Phone: 952-736-3901

Fax: 952-736-4582

james.edlund@us.telex.com

press contact:
Guy Low
Manager, PR/Media

(952) 736-3935
guy.low@us.bosch.com
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