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Presentation Auditorium

Tiered Sectional Seating with Raised Stage

This is primarily a lecture space. It may also host a wide range of activities, including presentations or entertainment events, when it must deliver full-bandwidth audio. It has a raised stage and lower front ceiling necessitating low profile loudspeaker solutions.

Suggested model families: I SERIES (IP600/800, IS600/800) and V SERIES
(V2-6, V2-26, V2-8, V2-28, V2-32, V2-35, VLF208LV)
An exploded array of horizontally oriented medium-format loudspeakers covers each section (Left/Center/Right [LCR]), and in this case subwoofers are mounted behind for full low frequency support. Depending upon the ceiling heights and the depth of the room, the space may be better served with two sets of arrayed loudspeakers (similar to Distributed Source configuration on the Lecture Hall, next page), with one set covering the front half of the seating and another placed about halfway back addressing the upper audience.
Additional stereo loudspeakers can be included to support LCR type events or occasional cinema use.
 
Unless this space is exclusively used for lectures, subwoofers are needed. Due to limited floor space, they can be mounted overhead (as shown).
For a deeper bass impact and more even bass coverage, array compact subwoofers along, or concealed in, the down-stage face of the stage.
Three (3) IP600/800
(various horn patterns)
Each covers a section with subwoofers mounted behind in landscape orientation.
 
An IP8-0002 mid-high with an IS6/8-115 subwoofer mounted behind is another option.
Spaced across the front of the stage area for extra bass support of cinema or musical events.

AMPLIFIER

For maximum system performance and longevity, the loudspeakers must be properly powered to achieve the needed sound pressure level (SPL) in the listening area.  Refer to the product spec sheets for appropriate amplifier ratings.

PROCESSING AND PROTECTION

To properly process, equalize and protect the loudspeaker systems, it is recommended to use the Community dSPEC226 digital signal processor.

Some amplifiers have built-in processing which may be adequate when properly programmed. Community's suggested DSP settings can be found HERE.

All of the loudspeakers require an electronic high pass filter for protection against over-excursion from bass-heavy program material.

Loudspeaker protection on the dSPEC226:
Protection is handled by three stages of protective limiters: these include a short-term peak limiter to prevent over-excursion of drivers and to control amplifier clipping; a mid-term RMS limiter that prevents system overdrive; and a unique long-term power monitor that works to protect your loudspeakers from long-term thermal damage.  All three limiters operate interactively, providing unique driver protection, while allowing each loudspeaker’s full dynamic range to be utilized without compromise.

 

WIRING

When considering the distance between the amplifier and the loudspeaker(s), the following minimum cable gauges are suggested.

Less than 50 feet: 14 AWG
50 to 100 feet: 12 AWG
100 to 250 feet: 10 AWG

It is strongly recommended that all loudspeaker level wire be stranded, twisted and never shielded. Loudspeaker wires should not be connected to earth ground or supporting structures.

 

TECH SUPPORT

For technical and applications assistance, please contact the Community TAG Team (Technical Applications Group) at 1+(610) 876-3400 or tagteam@communitypro.com.

 

DESIGN GUIDE

To view the entire Presentation & Performance Loudspeaker System Design Reference Guide, click HERE.