Chris Jolocon
Member
Hi, I am working to advise my school on a loudspeaker upgrade in a large school gymnatorium. The space is used for both athletic events, PE class, and concerts / graduations. Holds approximately 1,000 people. Room dimensions: approx/ 104 feet wide (the stage wall) and 84 feet deep. height from loudspeaker in ceiling to heads of audience members seated: approx. 20 feet. The back wall, with bleachers ,actually has many gaps in the cinder blocks with rock wool to absorb some sound, so acoustically, while certainly a live space, reverberation is manageable, particularly with an audience of 500 or more people.
See photos, current system is 4 Community r5 loudspeakers mounted in ceiling, 2 fire down to audience, 2 to the bleachers. the 2 other speakers (in the middle) are actually subwoofers, but the low end they are producing is not that great. The current system sounds ok to those in bleachers and those directly on-axis. However intelligibility falls away fairly rapidly when off axis. Localization is not that great when the action is on stage. Not sure what the coverage angles are on the speakers themselves. Administration is willing to upgrade, ideally using the existing 6 channels of amplification.
In the past, for events such as graduations, I would set up 2 speakers on sticks (JBL eon), roughly on the vertical maroon cinderblock lines (60' apart), with a center fill speaker below and in front of the stage, completely bypassing the ceiling speaker system. Intelligibility was greatly improved but we're looking to install something rather than have to set that up and tear down for every event.
I have a few ideas.
-Keep the 2 loudspeakers that are aimed at bleachers, but use them as delay fill.
-Replace the other 4, hang the new speakers from ceiling a few feet in front of the proscenium, possibly as follows: 2 in the center (1 as a down fill, 1 angled more into the mid/back of the room, get the tweeters as close to each other geographically as possible). 2 as side fills, hung roughly in line with those vertical maroon stripes.
possible loudspeakers:
-yamaha czr12 for center 2 speakers, (rotate the horn so it is 90 degree horizontal, 60 degree vertical 1 as a down fill, 1 angled more into the mid/back of room), czr 10 as side fills (again, rotate so 90 degree is the horizontal coverage). Angle side fills down at appropriate angle to get maximum coverage for audience.
-EV sx300 for all 4 speakers. (published as 65 degree h x v, but excellent coverage to 90 degrees )
-QSC e112 for all 4 speakers, or maybe 2 e112 for center, 2 e110 for side fills published as 85 degree conical.
-or other models to consider in similar price range?
Would probably be using the u bracket matched to each speaker, secured to the girders for any of these speakers, rather than suspending. Girders are about 5' apart.
Any thoughts / suggestions on speaker placement, speaker model?
See photos, current system is 4 Community r5 loudspeakers mounted in ceiling, 2 fire down to audience, 2 to the bleachers. the 2 other speakers (in the middle) are actually subwoofers, but the low end they are producing is not that great. The current system sounds ok to those in bleachers and those directly on-axis. However intelligibility falls away fairly rapidly when off axis. Localization is not that great when the action is on stage. Not sure what the coverage angles are on the speakers themselves. Administration is willing to upgrade, ideally using the existing 6 channels of amplification.
In the past, for events such as graduations, I would set up 2 speakers on sticks (JBL eon), roughly on the vertical maroon cinderblock lines (60' apart), with a center fill speaker below and in front of the stage, completely bypassing the ceiling speaker system. Intelligibility was greatly improved but we're looking to install something rather than have to set that up and tear down for every event.
I have a few ideas.
-Keep the 2 loudspeakers that are aimed at bleachers, but use them as delay fill.
-Replace the other 4, hang the new speakers from ceiling a few feet in front of the proscenium, possibly as follows: 2 in the center (1 as a down fill, 1 angled more into the mid/back of the room, get the tweeters as close to each other geographically as possible). 2 as side fills, hung roughly in line with those vertical maroon stripes.
possible loudspeakers:
-yamaha czr12 for center 2 speakers, (rotate the horn so it is 90 degree horizontal, 60 degree vertical 1 as a down fill, 1 angled more into the mid/back of room), czr 10 as side fills (again, rotate so 90 degree is the horizontal coverage). Angle side fills down at appropriate angle to get maximum coverage for audience.
-EV sx300 for all 4 speakers. (published as 65 degree h x v, but excellent coverage to 90 degrees )
-QSC e112 for all 4 speakers, or maybe 2 e112 for center, 2 e110 for side fills published as 85 degree conical.
-or other models to consider in similar price range?
Would probably be using the u bracket matched to each speaker, secured to the girders for any of these speakers, rather than suspending. Girders are about 5' apart.
Any thoughts / suggestions on speaker placement, speaker model?
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